Dosage Form: topical solution
FULL PRESCRIBING INFORMATION WARNING: SECONDARY EXPOSURE TO TESTOSTERONE Virilization has been reported in children who were secondarily exposed to topical testosterone products [see Warnings and Precautions (5.2)]. Children should avoid contact with unwashed or unclothed application sites in men using Axiron [see Dosage and Administration (2.2) and Warnings and Precautions (5.2)]. Healthcare providers should advise patients to strictly adhere to recommended instructions for use [see Dosage and Administration (2.2), Warnings and Precautions (5.2) and Patient Counseling Information (17)]. Indications and Usage for Axiron
Axiron is an androgen indicated for replacement therapy in males for conditions associated with a deficiency or absence of endogenous testosterone.Primary hypogonadism (congenital or acquired): testicular failure due to conditions such as cryptorchidism, bilateral torsion, orchitis, vanishing testis syndrome, orchiectomy, Klinefelter's syndrome, chemotherapy, or toxic damage from alcohol or heavy metals. These men usually have low serum testosterone concentrations and gonadotropins (FSH, LH) above the normal range. Hypogonadotropic hypogonadism (congenital or acquired): idiopathic gonadotropin or luteinizing hormone-releasing hormone (LHRH) deficiency or pituitary-hypothalamic injury from tumors, trauma, or radiation. These men have low testosterone serum concentrations but have gonadotropins in the normal or low range.
Important limitations of use — Safety and efficacy of Axiron in males <18 years old have not been established [see Use in Specific Populations (8.4)].Axiron Dosage and Administration Dosing and Dose Adjustment
The recommended starting dose of Axiron (testosterone) topical solution is 60 mg of testosterone (2 pump actuations) applied once daily.
To ensure proper dosing, serum testosterone concentrations should be measured after initiation of therapy to ensure that the desired concentrations (300 ng/dL-1050 ng/dL) are achieved. The Axiron dose can be adjusted based on the serum testosterone concentration from a single blood draw 2 – 8 hours after applying Axiron and at least 14 days after starting treatment or following dose adjustment.
If the measured serum testosterone concentration is below 300 ng/dL, the daily testosterone dose may be increased from 60 mg (2 pump actuations) to 90 mg (3 pump actuations) or from 90 mg to 120 mg (4 pump actuations). If the serum testosterone concentration exceeds 1050 ng/dL, the daily testosterone dose should be decreased from 60 mg (2 pump actuations) to 30 mg (1 pump actuation) as instructed by a physician. If the serum testosterone concentration consistently exceeds 1050 ng/dL at the lowest daily dose of 30 mg (1 pump actuation), Axiron therapy should be discontinued.
The application site and dose of Axiron are not interchangeable with other topical testosterone products.Administration Instructions
Axiron is applied to the axilla, preferably at the same time each morning, to clean, dry, intact skin. Do not apply Axiron to other parts of the body including to the scrotum, penis, abdomen, shoulders or upper arms. After applying the solution, the application site should be allowed to dry completely prior to dressing. Avoid fire, flames or smoking until the solution has dried since alcohol based products, including Axiron, are flammable.
Axiron is applied to the axilla using an applicator. When using Axiron for the first time, patients should be instructed to prime the pump by depressing the pump three (3) times, discard any product dispensed directly into a basin, sink, or toilet and then wash the liquid away thoroughly. This priming should be done only prior to the first use of each pump. After priming, patients should completely depress the pump one time (one pump actuation) to dispense 30 mg of testosterone. To dispense the solution, position the nozzle over the applicator cup and carefully depress the pump fully once. Ensure that the liquid is directed into the cup. The cup should be filled with no more than 30 mg (1 pump actuation) of testosterone. Dosing that requires greater than one pump actuation must be applied in increments of 30 mg as is shown in Table 1.
Keeping the applicator upright, patients should place it up into the axilla and wipe steadily down and up into the axilla. If the solution drips or runs, it can be wiped back up with the applicator cup. The solution should not be rubbed into the skin with fingers or hand. The process is then repeated with application of 30 mg of testosterone (1 pump actuation) to the other axilla to achieve a total of 60 mg of testosterone applied. For patients prescribed the 90 mg dose of testosterone, the procedure is the same, but three applications are required. To dose 120 mg of testosterone, four applications are required alternating left and right for each application as shown in Table 1. When repeat application to the same axilla is required, the axilla should be allowed to dry completely before more Axiron is applied.
After use, the applicator should be rinsed under room temperature, running water and then patted dry with a tissue. The applicator and cap are then replaced on the bottle for storage.
When deodorants or antiperspirants are used as part of a regular program for personal hygiene, they should not interfere with the efficacy of Axiron in treating hypogonadism. If patients use an antiperspirant or deodorant (stick or roll-on) then it should be applied prior to the application of Axiron to avoid contamination of the stick or roll-on product.
Patients should be advised to avoid swimming or washing the application site until two hours following application of Axiron [see Clinical Pharmacology (12.3)].
To reduce the likelihood of interpersonal transfer of testosterone, the application site should always be washed prior to any skin-to-skin contact regardless of the length of time since application. [See Warnings and Precautions (5.2)].Table 1: Application Technique Daily Prescribed Dose of Testosterone Number of Pump Actuations Application 30 mg 1 (once daily) Apply once to one axilla only (left OR right) 60 mg 2 (once daily) Apply once to the left axilla and then apply once to the right axilla. 90 mg 3 (once daily) Apply once to the left and once to the right axilla, wait for the product to dry, and then apply once again to the left OR right axilla. 120 mg 4 (once daily) Apply once to the left and once to the right axilla, wait for the product to dry, and then apply once again to the left AND once to the right axilla.
Hands should be washed thoroughly with soap and water after Axiron has been applied [see Warnings and Precautions (5.2)].
Strict adherence to the following precautions is advised in order to minimize the potential for secondary exposure to testosterone from Axiron treated skin:Children and women should avoid contact with the unclothed or unwashed application sites on the skin of men using Axiron. Patients should wash their hands immediately with soap and water after application of Axiron. Patients should cover the application site(s) with clothing (e.g., a T-shirt) after the solution has dried. Prior to any situation in which direct skin-to-skin contact is anticipated, patients should wash the application site thoroughly with soap and water to remove any testosterone residue. In the event that unwashed or unclothed skin to which Axiron has been applied comes in direct contact with the skin of another person, the general area of contact on the other person should be washed with soap and water as soon as possible.
While interpersonal testosterone transfer can occur with a T-shirt on, it has been shown that transfer can be substantially reduced by wearing a T-shirt and the majority of residual testosterone is removed from the skin surface by washing with soap and water.Dosage Forms and Strengths
Axiron is a (testosterone) topical solution available as a metered-dose pump. One pump actuation delivers 30 mg of testosterone. Each metered-dose pump is supplied with an applicator.Contraindications Axiron is contraindicated in men with carcinoma of the breast or known or suspected carcinoma of the prostate [see Warnings and Precaution (5.1)].
Axiron is contraindicated in women who are, or who may become pregnant, or who are breastfeeding. Axiron may cause fetal harm when administered to a pregnant woman. Axiron may cause serious adverse reactions in nursing infants. If a pregnant woman is exposed to Axiron, she should be apprised of the potential hazard to the fetus. [See Use in Specific Populations (8.1, 8.3)].Warnings and Precautions Worsening of Benign Prostatic Hyperplasia and Potential Risk of Prostate Cancer Monitor patients with benign prostatic hyperplasia (BPH) for worsening of signs and symptoms of BPH. Patients treated with Androgens may be at increased risk for prostate cancer. Evaluate patients for prostate cancer prior to initiating treatment. It would be appropriate to reevaluate patients 3 to 6 months after initiation of treatment, and then in accordance with prostate cancer screening practices. [See Contraindications (4)]. Potential for Secondary Exposure to Testosterone
Cases of secondary exposure to testosterone in children and women have been reported with topical testosterone products applied to the abdomen or upper arms, including cases of secondary exposure resulting in virilization of children. Signs and symptoms have included enlargement of the penis or clitoris, development of pubic hair, increased erections and libido, aggressive behavior, and advanced bone age. In most cases, these signs and symptoms regressed with removal of the exposure to testosterone. In a few cases, however, enlarged genitalia did not fully return to age-appropriate normal size, and bone age remained modestly greater than chronological age. The risk of transfer was increased in some of these cases by not adhering to precautions for the appropriate use of the topical testosterone product. Children and women should avoid contact with unwashed or unclothed application sites in men using Axiron [see Dosage and Administration (2.2), Use in Specific Populations (8.1) and Clinical Pharmacology (12.3)].
Inappropriate changes in genital size or development of pubic hair or libido in children, or changes in body hair distribution, significant increase in acne, or other signs of virilization in adult women should be brought to the attention of a physician and the possibility of secondary exposure to testosterone should also be brought to the attention of a physician. Testosterone therapy should be promptly discontinued at least until the cause of virilization has been identified. [See Dosage and Administration (2.2)].Polycythemia
Increases in hematocrit, reflective of increases in red blood cell mass, may require lowering or discontinuation of testosterone. Check hematocrit prior to initiating testosterone treatment. It would be appropriate to re-evaluate the hematocrit 3 to 6 months after starting testosterone treatment, and then annually. If hematocrit becomes elevated, stop therapy until hematocrit decreases to an acceptable level. An increase in red blood cell mass may increase the risk of thromboembolic events.Use in Women
Due to lack of controlled studies in women and potential virilizing effects, Axiron is not indicated for use in women [see Contraindications (4) and Use in Specific Populations (8.1, 8.3)].Potential for Adverse Effects on Spermatogenesis
At large doses of exogenous androgens, including Axiron, spermatogenesis may be suppressed through feedback inhibition of pituitary follicle-stimulating hormone (FSH) which could possibly lead to adverse effects on semen parameters including sperm count.Hepatic Adverse Effects
Prolonged use of high doses of orally active 17-alpha-alkyl androgens (methyltestosterone) has been associated with serious hepatic adverse effects (peliosis hepatitis, hepatic neoplasms, cholestatic hepatitis, and jaundice). Peliosis hepatitis can be a life-threatening or fatal complication. Long-term therapy with intramuscular testosterone enanthate has produced multiple hepatic adenomas. Axiron is not known to cause these adverse effects.Edema
Androgens, including Axiron, may promote retention of sodium and water. Edema, with or without congestive heart failure, may be a serious complication in patients with pre-existing cardiac, renal, or hepatic disease [see Adverse Reactions (6)].Gynecomastia
Gynecomastia may develop and may persist in patients being treated with androgens, including Axiron, for hypogonadism.Sleep Apnea
The treatment of hypogonadal men with testosterone may potentiate sleep apnea in some patients, especially those with risk factors such as obesity and chronic lung disease.Lipids
Changes in serum lipid profile may require dose adjustment or discontinuation of testosterone therapy.Hypercalcemia
Androgens, including Axiron, should be used with caution in cancer patients at risk of hypercalcemia (and associated hypercalciuria). Regular monitoring of serum calcium concentrations is recommended in these patients.Decreased Thyroxine-binding Globulin
Androgens, including Axiron, may decrease concentrations of thyroxin-binding globulins, resulting in decreased total T4 serum concentration and increased resin uptake of T3 and T4. Free thyroid hormone concentration remain unchanged, however there is no clinical evidence of thyroid dysfunction.Flammability
Alcohol based products, including Axiron, are flammable; therefore, patients should be advised to avoid smoking, fire or flame until the Axiron dose applied has dried.Adverse Reactions Clinical Trial Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
Clinical Trials in Hypogonadal Men
Table 2 shows the treatment emergent adverse reactions that were reported by either >4% of 155 patients in a 120 day, Phase 3 study or by >4% of 71 patients who continued to use Axiron for up to 180 days. These data reflect the experience primarily with a testosterone dose of 60 mg, which was taken by all patients at the start of the study, and was the maintenance dose for 97 patients. However, the doses used varied from 30 mg to 120 mg.Table 2: Adverse Reactions Seen With the Use of Axiron in either the 120 Day Clinical Trial or in the Extension to 180 Days (>4%) Event 120 Days
(155 Patients) 180 Days
(71 Patients) Application Site Irritation 11 (7%) 6 (8%) Application Site Erythema 8 (5%) 5 (7%) Headache 8 (5%) 4 (6%) Hematocrit Increased 6 (4%) 5 (7%) Diarrhea 4 (3%) 3 (4%) Vomiting 4 (3%) 3 (4%) PSA Increased 2 (1%) 3 (4%)
Other less common adverse reactions reported by at least 2 patients in the 120 day trial included: application site edema, application site warmth, increased hemoglobin, hypertension, erythema (general), increased blood glucose, acne, nasopharyngitis, anger and anxiety. Other less common adverse reactions reported in fewer than 1% of patients in the 120 day trial included: asthenia, affect lability, folliculitis, increased lacrimation, breast tenderness, increased blood pressure, increased blood testosterone, neoplasm prostate and elevated red blood cell count.
During the 120 day trial one patient discontinued treatment because of affect lability/anger which was considered possibly related to Axiron administration.
During the 120 day clinical trial there was an increase in mean PSA values of 0.13 ± 0.68 ng/mL from baseline. At the end of the 180 day extension clinical trial, there was an overall increase in mean PSA values of 0.1 ± 0.54 ng/mL.
Following the 120 day study, seventy-one (71) patients entered a two-month extension study with Axiron. Two patients (3%) had adverse reactions that led to discontinuation of treatment during the period from Day 120 to Day 180. These reactions were: one patient with application site irritation (considered possibly related to Axiron application) and one patient with dry skin and erythema, but not at the application site (considered not related to Axiron administration) and application site erythema (considered possibly related to Axiron administration).
No serious adverse reactions to Axiron were reported during either the 120 day trial, or the extension to 180 days.Drug Interactions Insulin
Changes in insulin sensitivity or glycemic control may occur in patients treated with androgens. In diabetic patients, the metabolic effects of androgens may decrease blood glucose and, therefore, insulin requirement.Oral anticoagulants
Changes in anticoagulant activity may be seen with androgens. More frequent monitoring of INR and prothrombin time is recommended in patients taking anticoagulants, especially at the initiation and termination of androgen therapy.Corticosteroids
The concurrent use of testosterone with ACTH or corticosteroids may result in increased fluid retention and should be monitored cautiously, particularly in patients with cardiac, renal or hepatic disease.USE IN SPECIFIC POPULATIONS Pregnancy
Pregnancy Category X [see Contraindications (4)] — Axiron is contraindicated during pregnancy or in women who may become pregnant. Testosterone is teratogenic and may cause fetal harm. Exposure of a female fetus to androgens may result in varying degrees of virilization. If this drug is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to a fetus.Nursing Mothers
Although it is not known how much testosterone transfers into human milk, Axiron is contraindicated in nursing women because of the potential for serious adverse reactions in nursing infants. Testosterone and other androgens may adversely affect lactation. [See Contraindications (4)].Pediatric Use
Safety and efficacy of Axiron has not been established in males <18 years of age. Improper use may result in acceleration of bone age and premature closure of epiphyses.Geriatric Use
There have not been sufficient numbers of geriatric patients involved in controlled clinical studies utilizing Axiron to determine whether efficacy in those over 65 years of age differs from younger patients. Of the 155 patients enrolled in the pivotal clinical study utilizing Axiron, 21 were over 65 years of age. Additionally, there were insufficient long-term safety data in these patients utilizing Axiron to assess a potential incremental risk of cardiovascular disease and prostate cancer.Renal Impairment
No formal studies were conducted involving patients with renal impairment.Hepatic Impairment
No formal studies were conducted involving patients with hepatic impairment.Use in Men with Body Mass Index (BMI) >35 kg/m2
Safety and efficacy of Axiron in males with BMI >35 kg/m2 has not been established.Drug Abuse and Dependence Controlled Substance
Axiron contains testosterone, a Schedule III controlled substance as defined by the Anabolic Steroids Control Act.Abuse
Anabolic steroids, such as testosterone, are abused. Abuse is often associated with adverse physical and psychological effects.Dependence
Although drug dependence is not documented in individuals using therapeutic doses of anabolic steroids for approved indications, dependence is observed in some individuals abusing high doses of anabolic steroids. In general, anabolic steroid dependence is characterized by any three of the following:Taking more drug than intended Continued drug use despite medical and social problems Significant time spent in obtaining adequate amounts of drug Desire for anabolic steroids when supplies of the drug are interrupted Difficulty in discontinuing use of the drug despite desires and attempts to do so Experience of withdrawal syndrome upon discontinuation of anabolic steroid use Overdosage
No cases of overdose with Axiron have been reported in clinical trials. There is one report of acute overdosage by injection of testosterone enanthate: testosterone concentrations of up to 11,400 ng/dL were implicated in a cerebrovascular accident. Treatment of overdosage would consist of discontinuation of Axiron together with appropriate symptomatic and supportive care.Axiron Description
Axiron (testosterone) topical solution is a clear, colorless, single phase solution containing 30 mg of testosterone in 1.5 mL of Axiron solution for topical administration through the axilla. The active pharmacologic ingredient in Axiron is testosterone. Testosterone USP is a white to practically white crystalline powder chemically described as 17-beta hydroxyandrost-4-en-3-one. The structural formula is:
The inactive ingredients are ethanol, isopropyl alcohol, octisalate, and povidone.Axiron - Clinical Pharmacology Mechanism of Action
Endogenous androgens, including testosterone and dihydrotestosterone (DHT), are responsible for the normal growth and development of the male sex organs and for maintenance of secondary sex characteristics. These effects include the growth and maturation of prostate, seminal vesicles, penis and scrotum; the development of male hair distribution, such as facial, pubic, chest and axillary hair; laryngeal enlargement, vocal cord thickening, alterations in body musculature and fat distribution. Testosterone and DHT are necessary for the normal development of secondary sex characteristics. Male hypogonadism results from insufficient secretion of testosterone and is characterized by low serum testosterone concentrations. Signs/symptoms associated with male hypogonadism include erectile dysfunction and decreased sexual desire, fatigue and loss of energy, mood depression, regression of secondary sexual characteristics and osteoporosis.
Male hypogonadism has two main etiologies. Primary hypogonadism is caused by defects of the gonads, such as Klinefelter's Syndrome or Leydig cell aplasia, whereas secondary hypogonadism is the failure of the hypothalamus (or pituitary) to produce sufficient gonadotropins (FSH, LH).Pharmacodynamics
No specific pharmacodynamic studies were conducted using Axiron.Pharmacokinetics
Absorption — Axiron delivers physiologic circulating testosterone that approximate normal concentration range (i.e., 300 - 1050 ng/dL) seen in healthy men following application to the axilla.
On the skin, the ethanol and isopropyl alcohol evaporate leaving testosterone and octisalate. The skin acts as a reservoir from which testosterone is released into the systemic circulation over time (see Figure 1). In general, steady-state serum concentrations are achieved by approximately 14 days of daily dosing.
Figure 1: Mean (±SD) Serum Testosterone Concentrations on Day 7 in Patients Following Axiron Once-Daily Application of 30 mg, 60 mg, or 90 mg of Testosterone
When Axiron treatment is discontinued after achieving steady-state, serum testosterone concentrations returned to their pretreatment concentrations by 7 – 10 days after the last application.
Distribution — Circulating testosterone is primarily bound in the serum to sex hormone-binding globulin (SHBG) and albumin. Approximately 40% of testosterone in plasma is bound to SHBG, 2% remains unbound (free) and the rest is bound to albumin and other proteins.
Metabolism —Testosterone is metabolized to various 17-keto steroids through two different pathways. The major active metabolites of testosterone are estradiol and dihydrotestosterone (DHT).
DHT concentration increased in parallel with testosterone concentration during Axiron treatment. The mean steady-state DHT/T ratio remained within normal limits and ranged from 0.17 to 0.26 across all doses on Days 15, 60, and 120.
Excretion — There is considerable variation in the half-life of testosterone as reported in the literature, ranging from 10 to 100 minutes. About 90% of a dose of testosterone given intramuscularly is excreted in the urine as glucuronic and sulfuric acid conjugates of testosterone and its metabolites; about 6% of a dose is excreted in the feces, mostly in the unconjugated form. Inactivation of testosterone occurs primarily in the liver.
Potential for testosterone transfer: The potential for testosterone transfer from males dosed with Axiron to healthy females was evaluated in a clinical study conducted with a 2% testosterone formulation. 10 males were treated with 60 mg (2 pump actuations) of testosterone in each axilla (the maximum testosterone dose of 120 mg). At 2 hours after the application of Axiron to the males, the females rubbed their outer forearms for 15 minutes on the axilla of the males. The males had covered the application area with a T-shirt. Serum concentrations of testosterone were monitored in the female subjects for 72 hours after the transfer procedure. Study results show a 13% and 17% increase in testosterone exposure (AUC[0-24]) and maximum testosterone concentration (Cmax), respectively, compared to baseline in these females. In a prior clinical study conducted with a 1% testosterone formulation under similar study conditions, direct skin-to-skin transfer showed a 131% and 297% increase in testosterone exposure (AUC[0-72]) and maximum testosterone concentration (Cmax), respectively, compared to when men had covered the application area with a T-shirt.
In a clinical study conducted with a 2% testosterone formulation to evaluate the effect of washing on the residual amount of testosterone at the axilla, 10 healthy male subjects received 60 mg (2 pump actuations) of testosterone to each axilla (the maximum testosterone dose of 120 mg). Following 5 minutes of drying time, the left axilla was wiped with alcohol towelettes which were assayed for testosterone content. Subjects were required to shower with soap and water 30 minutes after application. The right axilla was then wiped with alcohol towelettes which were assayed for testosterone content. A mean (SD) of 3.1 (2.8) mg of residual testosterone (i.e., 92.6% reduction compared to when axilla was not washed) was recovered after washing this area with soap and water. [See Dosage and Administration (2.2) and Warnings and Precautions (5.2)].
Use of deodorants and anti-perspirants: In a parallel designed clinical study evaluating the effect of deodorants and antiperspirants in healthy premenopausal females dosed with Axiron, each subject applied either a combined deodorant/antiperspirant spray (6 subjects) or stick (6 subjects) or a deodorant spray (6 subjects) to a single axilla 2 minutes before the application of 30 mg (1 pump actuation) of testosterone to the same axilla. A control group of 6 subjects only applied 30 mg (1 pump actuation) of testosterone to a single axilla. Blood samples were collected for 72 hours from all subjects following Axiron administration. Although a decrease of up to 33% of testosterone exposure (AUC[0-72]) was observed when antiperspirants or deodorants are used 2 minutes prior to Axiron application, underarm deodorant or antiperspirant spray or stick products may be used 2 minutes prior to Axiron application as part of normal, consistent, and daily routine. [See Dosage and Administration (2.2), and Patient Counseling Information (17.4)].
Effect of showering/washing: In a parallel designed clinical study to evaluate the effect of washing on the testosterone systemic exposure, two groups of 6 healthy premenopausal female subjects were each dosed with 30 mg (1 pump actuation) of testosterone to a single axilla. The application sites of each group were washed with soap and water 2 hours or 6 hours after the application of Axiron. A control group of 6 female subjects applied 30 mg (1 pump actuation) of testosterone to a single axilla and did not wash the application site. Blood samples were collected for 72 hours from all subjects following dosing with Axiron. A decrease of up to 35% of testosterone exposure (AUC[0-72]) was observed when applications sites were washed 2 hours and 6 hours after Axiron application. Patients should be advised to avoid swimming or washing the application site until 2 hours following application of Axiron. [See Dosage and Administration (2.2) and Patient Counseling Information (17.4)].Nonclinical Toxicology Carcinogenesis, Mutagenesis, Impairment of Fertility
Testosterone has been tested by subcutaneous injection and implantation in mice and rats. In mice, the implant induced cervical-uterine tumors, which metastasized in some cases. There is suggestive evidence that injection of testosterone into some strains of female mice increases their susceptibility to hepatoma. Testosterone is also known to increase the number of tumors and decrease the degree of differentiation of chemically induced carcinomas of the liver in rats. Testosterone was negative in the in vitro Ames and in the in vivo mouse micronucleus assays. The administration of exogenous testosterone has been reported to suppress spermatogenesis in the rat, dog and non-human primates, which was reversible on cessation of the treatment.Clinical Studies Clinical Studies in Hypogonadal Men
Axiron was evaluated in a multicenter, open label, 120-day trial that enrolled 155 hypogonadal men at 26 clinical research centers. The median age of subjects was 53 years with a range of 19 – 78 years. Of the 144 subjects whose race was recorded, 122 (84.7%) were Caucasian, 13 (9.0%) were Hispanic, 6 (4.2%) were African Americans, 1 (0.7%) was Asian and 2 (1.4%) had race recorded as “Other”.
Patients were instructed to apply Axiron to unclothed, clean, dry, and unbroken skin. The solution was applied to the axillary area. Patients were not instructed to alter their normal grooming routine, e.g., shave under the arm.
During the initial Axiron treatment period (Days 1-15) 143 patients were treated with 60 mg of testosterone daily. On Day 45 of the trial, patients were maintained at the same dose, or were titrated up or down, based on their 24 hour average serum testosterone concentration measured on Day 15. On Day 90 of the trial, patients were maintained at the same dose, or were titrated up or down, based on their 24 hour average serum testosterone concentration measured on Day 60.
On day 120, 75% of responding patients finished the study on the starting dose of 60 mg of testosterone, while 2% had been titrated to 30 mg, 17% had been titrated to 90 mg and 6% had been titrated to the 120 mg dose.
On day 60, 84.8% of subjects had total testosterone concentrations in the normal range. Of those who had sufficient data for analysis on day 120, 84.1%, had their average serum testosterone concentration in the normal range of 300 – 1050 ng/dL.
Table 3 summarizes the proportion of subjects having average testosterone concentrations within the normal range on Days 60 and 120.Table 3: Proportion of subjects who had an average Serum Total Testosterone in the range 300 to 1050 ng/dL and completed 120 days of treatment (N=138a) Evaluation Time Statistics Value
a Three patients who withdrew from the study due to adverse reactions are included as treatment failures.
b Normal represents the percentage of patients with average testosterone concentration in the range of 300 – 1050 ng/dL.
c On Day 15, 72.2% of the 90 subjects in the US study population had an average serum testosterone in the range of 300 ng/dL – 1050 ng/dL.Baseline Testosterone Mean (SD) 194.6 ng/dL (92.9 ng/dL) Day 15 Normalb 76.1%c 95% CI (69.0%, 83.2%) Day 60 Normalb 84.8% 95% CI (78.8%, 90.8%) Day 120 Normalb 84.1% 95% CI (77.9%, 90.2%)
Of the 135 patients who completed the 120 day treatment, 123 patients did so with no deviation from the protocol. By day 120, average serum testosterone concentration was within normal range for 67% of those who titrated down on the 30 mg dose, 89% of those on the 60 mg dose, 86% of those who titrated up to 90 mg and 70% of those who titrated up to the 120 mg dose. Table 4 below summarizes the testosterone concentration data in the patients who completed 120 days.Table 4: Baseline-unadjusted Arithmetic Mean (±SD) Steady-State Serum Testosterone Concentrations on Days 15, 60 and 120 in Patients Who Completed 120 Days of Treatment Dose of Axiron 30 mg 60 mg 90 mg 120 mg Overall Day 15 [N=0] [N=135] [N=0] [N=0] [N=135] Cavg (ng/dL) -- 456 (±226) -- -- 456 (±226) Cmax (ng/dL) -- 744 (±502) -- -- 744 (±502) Day 60 [N=1] [N=105] [N=29] [N=0] [N=135] Cavg (ng/dL) 343 (--) 523 (±207) 368 (±138) -- 488 (±204) Cmax (ng/dL) 491 (--) 898 (±664) 646 (±382) -- 840 (±620) Day 120 [N=3] [N=97] [N=25] [N=10] [N=135] Cavg (ng/dL) 493 (±239) 506 (±175) 415 (±165) 390 (±160) 480 (±177) Cmax (ng/dL) 779 (±416) 839 (±436) 664 (±336) 658 (±353) 792 (±417)
Figure 2 summarizes the pharmacokinetic profiles of total testosterone in patients completing 120 days of Axiron treatment administered as 60 mg of testosterone for the initial 15 days followed by possible titration according to follow-up testosterone measurements.
Figure 2: Mean (± SD) Steady-State Serum Testosterone Concentrations on Day 120 (30, 60, 90 or 120 mg testosterone) in Patients Who Completed 120 Days (N=135) of Axiron Once-Daily TreatmentHow Supplied/Storage and Handling How Supplied
Axiron (testosterone) topical solution is available as a metered-dose pump containing 110 mL of solution. The pump is capable of dispensing 90 mL of solution in 60 metered pump actuations. One pump actuation delivers 30 mg of testosterone in 1.5 mL of solution. Each metered-dose pump is supplied with an applicator. Neither the bottle nor the applicator cup contains latex.
NDC 0002-1975-90Storage and Handling
Keep Axiron out of reach of children.
Store at 25°C (77°F). Excursions are permitted to 15°C to 30°C (59°F to 86°F). See USP Controlled Room Temperature.
Used Axiron bottles and applicators should be discarded in household trash in a manner that prevents accidental exposure of children or pets.Patient Counseling Information
See FDA-Approved Medication Guide.
Patients should be informed of the following information:Use in Men with Known or Suspected Prostate or Breast Cancer
Men with known or suspected prostate or breast cancer should not use Axiron. [See Contraindications (4) and Warnings and Precaution (5.1)].Potential for Secondary Exposure to Testosterone and Steps to Prevent Secondary Exposure
Cases of secondary exposure to testosterone in children and women have been reported with topical testosterone products applied to the abdomen, shoulders or upper arms, including cases of secondary exposure resulting in virilization of children, with signs and symptoms including enlargement of the penis or clitoris, premature development of pubic hair, increased erections, aggressive behavior and advanced bone age. Inappropriate changes in genital size or premature development of pubic hair or libido in children, or changes in hair distribution, increase in acne, or other signs of testosterone effects in adult women should be brought to the attention of a physician and the possibility of secondary exposure to Axiron also should be brought to the attention of a physician. Axiron should be promptly discontinued at least until the cause of virilization is identified.
Strict adherence to the following precautions is advised in order to minimize the potential for secondary exposure to testosterone from Axiron treated skin:Axiron should only be applied to the axilla, not to any other part of the body. Children and women should avoid contact with the unwashed skin of the axilla or unclothed application sites of men where Axiron has been applied. Patients should wash their hands immediately with soap and water after application of Axiron. Patients should cover the axilla application site(s) with clothing (e.g., a shirt) after waiting 3 minutes for the solution to dry. Prior to any situation in which direct skin-to-skin contact of the a
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Generic Name: testosterone buccal system (tes TOSS ter one)
Testosterone is a naturally occurring "male" sex hormone necessary for many processes in the body.
Testosterone buccal system is used to treat men with low testosterone levels.
Testosterone buccal system may also be used for purposes other than those listed in this medication guide.What is the most important information I should know about testosterone buccal system? Notify your doctor if you experience nausea; vomiting; swelling of the ankles; changes in skin color; too frequent or prolonged erections; breathing disturbances, including those associated with sleep; yellowing of the skin or eyes; dark colored urine; or problems with urination. Notify your doctor if a female partner experiences male-pattern baldness, excessive body hair growth, an increase in acne, menstrual irregularities, or signs of masculinity.
Regularly inspect the gum where the testosterone buccal system is applied. Promptly report any changes to your doctor or dentist.What should I discuss with my healthcare provider before using testosterone buccal system? Do not use testosterone buccal system if you have cancer of the breast or prostate. Testosterone may worsen some cancers of these types.
Before using testosterone buccal system, tell your doctor if you have
had a previous allergic reaction to testosterone;
sleep apnea (brief periods of not breathing during sleep) or if you have risk factors for sleep apnea (e.g., obesity, chronic lung disease);
difficulty with urination due to enlargement of the prostate;
heart disease; orliver disease or kidney disease.
You may not be able to use testosterone buccal system, or you may need a dosage adjustment or special monitoring if you have any of the conditions listed above.Testosterone buccal system is not approved for use by women and must not be used by women. Testosterone buccal system is in the FDA pregnancy category X. This means that testosterone is known to cause birth defects in an unborn baby. Do not use testosterone buccal system if you are pregnant or could become pregnant during treatment. Testosterone buccal system is not approved for use by women and must not be used by women. It is not known whether testosterone from the buccal system will pass into breast milk.Do not use testosterone buccal system if you are breast-feeding a baby. Men over 65 years of age that use testosterone buccal system may be at increased risk for the development of prostatic enlargement or cancer. You may not be able to use buccal system testosterone, or you may require a lower dose or special monitoring. How should I use testosterone buccal system?
Use testosterone buccal system exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.
To use the testosterone buccal system (Striant):
Hold one buccal system with the flat side on your fingertip. Place the curved side onto your gum, as high as possible above the left or right incisor tooth. Hold your finger on the outside of your lip over the system for 30 seconds to ensure the system is attached to the gum. If the system sticks to the cheek and not the gum, this is acceptable.
The buccal system should remain in place for 12 hours. To remove the system, move it slightly toward the back or front of the mouth then slide it toward the teeth from removal. With each new application, rotate to alternate sides of the mouth. This avoids scratching the gum. Check to see that the system is in place after eating, drinking, brushing the teeth, or using mouthwash.
As the buccal system absorbs moisture from the mouth, it will begin to soften and will mold to the shape of the gum. The system does not dissolve completely, but will remain in place. It will not move until you remove it.
If a buccal system falls off before 8 hours of use, remove it and replace it with a new system in the same place.
Change the buccal system and alternate sides of the mouth 12 hours after application of the original system. If a buccal system falls off after 8 hours but before 12 hours of use, remove the system and replace it with a new system above the opposite incisor. This will serve as the second dose for the day.
Do not chew or swallow the testosterone buccal system.
Regularly inspect the gum where the testosterone buccal system is applied. Promptly report any changes to your doctor or dentist.
Your doctor may want to perform tests to monitor the amount of testosterone in the body, liver function, prostate function, cholesterol levels, or other factors during treatment with testosterone buccal system.
It is important to use testosterone buccal system regularly to get the most benefit.
Dispose of all used systems properly, out of the reach of children and pets.Store testosterone buccal system at room temperature away from moisture and heat. What happens if I miss a dose?
Apply the next system as soon as you remember. Do not use two doses simultaneously, unless otherwise directed by your doctor.What happens if I overdose? An overdose of testosterone buccal system is not likely to threaten life. If you do suspect an overdose, or if a system has been ingested, call an emergency room or poison control center for advice. What should I avoid while using testosterone buccal system?
Regularly inspect the gum where the testosterone buccal system is applied. Promptly report any changes to your doctor or dentist.Testosterone buccal system side effects If you experience any of the following serious side effects, stop using testosterone buccal system and seek emergency medical attention or contact your doctor immediately:
an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
nausea or vomiting;
changes in skin color;
swelling of the ankles or legs;
breathing disturbances, including those associated with sleep;
too frequent or prolonged erections;
liver damage (yellowing of the skin or eyes, nausea, abdominal pain or discomfort, unusual bleeding or bruising, or severe fatigue); or
dark colored urine or problems with urination.
Other, less serious side effects may be more likely to occur. Continue to use testosterone buccal system and talk to your doctor if you experience
irritation or changes in the gum at the system application site;
bitter or unusual taste in the mouth;
increased blood pressure;
decreased interest in sex;
changes in blood cholesterol or number of red blood cells (detected by blood tests);
prostate changes or difficulty urinating;
enlarged, swollen or tender breasts; or
acne.Notify your doctor if a female partner experiences male-pattern baldness, excessive body hair growth, an increase in acne, menstrual irregularities, or signs of masculinity.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.What other drugs will affect testosterone buccal system?
Before using testosterone buccal system, tell your doctor if you are taking any of the following medicines:
insulin or an oral diabetes medication such as glipizide (Glucotrol), glyburide (Diabeta, Micronase, Glynase), repaglinide (Prandin), rosiglitazone (Avandia), pioglitazone (Actos), and others;
propranolol (Inderal, Inderal LA, others); or
a corticosteroid such as hydrocortisone (Cortef, Hydrocortone, Solu-Cortef), dexamethasone (Decadron, Hexadrol others), methylprednisolone (Depo-Medrol, Medrol, Solu-Medrol), prednisolone (Prelone, Pediapred), prednisone (Deltasone, Orasone, others), and others.
You may not be able to use testosterone buccal system, or you may require a dosage adjustment or special monitoring during treatment if you are taking any of the medicines listed above.
Drugs other than those listed here may also interact with testosterone buccal system. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.More Striant resources Striant Side Effects (in more detail)Striant Use in Pregnancy & BreastfeedingDrug ImagesStriant Drug InteractionsStriant Support Group0 Reviews for Striant - Add your own review/rating Striant MedFacts Consumer Leaflet (Wolters Kluwer) Striant Advanced Consumer (Micromedex) - Includes Dosage Information Striant Consumer Overview Striant Prescribing Information (FDA) Testosterone Monograph (AHFS DI) Testosterone Prescribing Information (FDA) Testosterone Professional Patient Advice (Wolters Kluwer) AndroGel Prescribing Information (FDA) AndroGel Gel MedFacts Consumer Leaflet (Wolters Kluwer) Androderm Advanced Consumer (Micromedex) - Includes Dosage Information Androderm Patch MedFacts Consumer Leaflet (Wolters Kluwer) Androderm Prescribing Information (FDA) Androgel Consumer Overview Androgel Advanced Consumer (Micromedex) - Includes Dosage Information Axiron Prescribing Information (FDA) Axiron Consumer Overview Axiron Solution MedFacts Consumer Leaflet (Wolters Kluwer) Delatestryl Prescribing Information (FDA) Delatestryl MedFacts Consumer Leaflet (Wolters Kluwer) Depo-Testosterone Prescribing Information (FDA) Depo-Testosterone MedFacts Consumer Leaflet (Wolters Kluwer) Fortesta Gel MedFacts Consumer Leaflet (Wolters Kluwer) Fortesta Consumer Overview Testim Prescribing Information (FDA) Testim Gel MedFacts Consumer Leaflet (Wolters Kluwer) Testosterone Cypionate Prescribing Information (FDA) Testosterone Enanthate Prescribing Information (FDA) Compare Striant with other medications Hypogonadism, Male Where can I get more information? Your pharmacist has additional information about testosterone buccal system written for health professionals that you may read.
See also: Striant side effects (in more detail)
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