Androderm

Generic Name: testosterone transdermal system
Brand Name: Androderm
Drug Class: ANDROGENS

side effects drug center androderm (testosterone transdermal system) drug

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Health Resources
Low Testosterone (Low-T)

PROFESSIONAL CONSUMER SIDE EFFECTS

Drug Description

What is Androderm and how is it used?

Androderm is a prescription medicine that contains testosterone. Androderm is used to treat adult males who have low or no testosterone due to certain medical conditions.

Your healthcare provider will test your blood for testosterone before you start and while you are taking Androderm.

It is not known if Androderm is safe or effective to treat men who have low testosterone due to aging.

It is not known if Androderm is safe and effective in children younger than 18 years old. Improper use of Androderm may affect bone growth in children.

What are the possible side effects of Androderm?

Androderm can cause serious side effects including:

If you already have an enlargement of your prostate gland your signs and symptoms may get worse while using Androderm. This can include:
- increased urination at night
- trouble starting your urine stream
- having to pass urine many times during the day
- having an urge that you have to go to the bathroom right away
- having a urine accident
- being unable to pass urine or weak urine flow
Possible increased risk of prostate cancer. Your healthcare provider should check you for prostate cancer or any other prostate problems before you start and while you use Androderm.
Blood clots in the legs or lungs. Signs and symptoms of a blood clot in your leg can include leg pain, swelling or redness. Signs and symptoms of a blood clot in your lungs can include difficulty breathing or chest pain. This can include pain, swelling or redness of your legs.
Possible increased risk of heart attack or stroke.
In large doses Androderm may lower your sperm count.
Swelling of your ankles, feet, or body, with or without heart failure.
Enlarged or painful breasts.
Problems breathing while you sleep (sleep apnea).

Call your healthcare provider right away if you have any of the serious side effects listed above.

The most common side effects of Androderm include:

skin redness, irritation, burning, or blisters where Androderm is applied
back pain
depression
headache
prostate abnormalities

Other side effects include more erections than are normal for you or erections that last a long time. Tell

your healthcare provider if you have any side effect that bothers you or that does not go away. These are not all the possible side effects of Androderm. For more information, ask your healthcare provider or pharmacist.

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

DESCRIPTION

Androderm (testosterone transdermal system) is designed to deliver testosterone continuously for 24 hours following application to intact, non-scrotal skin (e.g., back, abdomen, thighs, upper arms).

Two strengths of Androderm are available that deliver approximately 2 mg or 4 mg of testosterone per day.

Androderm has a central drug delivery reservoir surrounded by a peripheral adhesive area. The Androderm 2 mg/day system has a total contact surface area of 32 cm² with a 6.0 cm² central drug delivery reservoir containing 9.7 mg testosterone USP, dissolved in an alcohol-based gel. The Androderm 4 mg/day system has a total contact surface area of 39 cm² with a 12.0 cm² central drug delivery reservoir containing 19.5 mg testosterone USP, dissolved in an alcohol-based gel. Testosterone USP is a white, or creamy white crystalline powder or crystals chemically described as 17ß-hydroxyandrost-4-en-3-one.

Androderm® (testosterone transdermal system) Structural Formula Illustration

The Androderm systems have six components as shown in Figure 1. Proceeding from the top toward the surface attached to the skin, the system is composed of (1) metallized polyester/Surlyn® (ethylene-methacrylic acid copolymer)/ethylene vinyl acetate backing film with alcohol resistant ink, (2) a drug reservoir of testosterone USP, alcohol USP, glycerin USP, glycerol monooleate, methyl laurate, sodium hydroxide NF, to adjust pH, and purified water USP, gelled with carbomer copolymer Type B NF, (3) a permeable polyethylene microporous membrane, and (4) a peripheral layer of acrylic adhesive surrounding the central, active drug delivery area of the system. Prior to opening of the system and application to the skin, the central delivery surface of the system is sealed with a peelable laminate disc (5) composed of a five-layer laminate containing polyester/polyesterurethane adhesive/aluminum foil/polyester-urethane adhesive/polyethylene. The disc is attached to and removed with the release liner (6), a silicone-coated polyester film, which is removed before the system can be used.

Figure 1: System Schematic

The active ingredient in the system is testosterone. The remaining components of the system are pharmacologically inactive.

Indications

INDICATIONS

ANDRODERM is an androgen indicated for replacement therapy in adult 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 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 ANDRODERM in males < 18 years old have not been established [see Use In Specific Populations].

Dosage

DOSAGE AND ADMINISTRATION

Dosing Information

The recommended starting dose is one ANDRODERM 4 mg/day system (not two 2 mg/day systems) applied nightly for 24 hours, delivering approximately 4 mg of testosterone per day. To ensure proper dosing, approximately 2 weeks after starting therapy, the early morning serum testosterone concentration should be measured following system application the previous evening. Serum concentrations outside the range of 400 – 930 ng/dL require increasing the daily dose to 6 mg (i.e., one 4 mg/day and one 2 mg/day system) or decreasing the daily dose to 2 mg (i.e., one 2 mg/day system), maintaining nightly application.

Patients currently maintained on ANDRODERM 2.5 mg/day, 5 mg/day, and 7.5 mg/day may be switched to the 2 mg/day, 4 mg/day, and 6 mg/day dosage using the following schema:

Patients using 2.5 mg daily may be switched to 2 mg/day systems at the next scheduled dose.
Patients using 5 mg daily may be switched to 4 mg/day systems at the next scheduled dose.
Patients using 7.5 mg daily may be switched to 6 mg (2 mg/day and 4 mg/day systems) at the next scheduled dose.

To ensure proper dosing, approximately 2 weeks after switching therapy, the early morning serum testosterone concentration should be measured following system application the previous evening.

The adhesive side of the ANDRODERM system should be applied to a clean, dry area of the skin on the back, abdomen, upper arms, or thighs. Avoid application over bony prominences or on a part of the body that may be subject to prolonged pressure during sleep or sitting (e.g., the deltoid region of the upper arm, the greater trochanter of the femur, and the ischial tuberosity). DO NOT APPLY TO THE SCROTUM. The sites of application should be rotated, with an interval of 7 days between applications to the same site. The area selected should not be oily, damaged, or irritated.

The system should be applied immediately after opening the pouch and removing the protective release liner. The system should be pressed firmly in place, making sure there is good contact with the skin, especially around the edges.

The patient should avoid swimming, showering, or washing the administration site for a minimum of 3 hours after application [see CLINICAL PHARMACOLOGY].

Mild skin irritation may be ameliorated by treatment of the affected skin with over-thecounter topical hydrocortisone cream applied after system removal. Applying a small amount of 0.1% triamcinolone acetonide cream to the skin under the central drug reservoir of the ANDRODERM system has been shown to reduce the incidence and severity of skin irritation.

HOW SUPPLIED

Dosage Forms And Strengths

Transdermal system: 2 mg/day and 4 mg/day.

Storage And Handling

ANDRODERM (testosterone transdermal system) 2 mg/day

Each system contains 9.7 mg testosterone USP for delivery of 2 mg of testosterone per day [see DESCRIPTION].

Cartons of 60 systems NDC 52544-076-60

ANDRODERM (testosterone transdermal system) 4 mg/day

Each system contains 19.5 mg testosterone USP for delivery of 4 mg of testosterone per day [see DESCRIPTION].

Cartons of 30 systems NDC 52544-077-30

Store at 20-25°C (68-77°F). [See USP controlled room temperature.] Apply to skin immediately upon removal from the protective pouch. Do not store outside the pouch provided. Damaged systems should not be used. The drug reservoir may be burst by excessive pressure or heat. Discard systems in household trash in a manner that prevents accidental application or ingestion by children, pets or others.

Manufactured By: Watson Laboratories, Inc. Salt Lake City, UT 84108 USA. Distributed By: Watson Pharma, Inc. Parsippany, NJ 07054 USA. Revised: June 2014

Warnings & Precautions

WARNINGS

Included as part of the PRECAUTIONS section.

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 is appropriate to re-evaluate patients 3 to 6 months after initiation of treatment, and then in accordance with prostate cancer screening practices [see CONTRAINDICATIONS].

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 is appropriate to re-evaluate the hematocrit 3 to 6 months after starting testosterone treatment, and then monitor annually. Discontinue testosterone therapy if the hematocrit becomes elevated. Testosterone therapy may be restarted when the hematocrit decreases to an acceptable level. An increase in red blood cell mass may increase the risk of thromboembolic events.

Use in Women and Children

Women and children should not use ANDRODERM. Use in women and children has not been studied with ANDRODERM.

Due to lack of controlled studies in women and potential virilizing effects, ANDRODERM is not indicated for use in women and children [see CONTRAINDICATIONS and Use In Specific Populations].

Potential for Adverse Effects on Spermatogenesis

At large doses of exogenous androgens, including ANDRODERM, spermatogenesis may be suppressed through feedback inhibition of pituitary follicle-stimulating hormone (FSH) that could lead to adverse effects on semen parameters including reduction of 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 hepatis, hepatic neoplasms, cholestatic hepatitis, and jaundice). Peliosis hepatis can be a life-threatening or fatal complication. Long-term therapy with intramuscular testosterone enanthate has produced multiple hepatic adenomas. ANDRODERM is not known to cause these adverse effects.

Edema

Androgens, including ANDRODERM, may promote retention of sodium and water. Edema, with or without congestive heart failure, may be a serious complication in patients with preexisting cardiac, renal, or hepatic disease [see ADVERSE REACTIONS].

Gynecomastia

Gynecomastia may develop and persist in patients being treated with androgens, including ANDRODERM, 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 ANDRODERM, 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 ANDRODERM, may decrease concentrations of thyroxine-binding globulins, resulting in decreased total T4 serum concentration and increased resin uptake of T3 and T4. Free thyroid hormone concentration remains unchanged and there is no clinical evidence of thyroid dysfunction.

Magnetic Resonance Imaging (MRI)

Skin burns have been reported at the application site in patients wearing an aluminized transdermal system during a magnetic resonance imaging scan (MRI). Because ANDRODERM contains aluminum, it is recommended to remove the system before undergoing an MRI.

Patient Counseling Information

See “FDA-approved patient labeling (PATIENT INFORMATION)”. 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 ANDRODERM [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS].

Potential Adverse Reactions with Androgens

Patients should be informed that treatment with androgens may lead to adverse reactions that include:

Changes in urinary habits such as increased urination at night, trouble starting your urine stream, passing urine many times during the day, having an urge that you have to go to the bathroom right away, having a urine accident, being unable to pass urine and having a weak urine flow
Breathing disturbances, including those associated with sleep, or excessive daytime sleepiness
Too frequent or persistent erections of the penis
Nausea, vomiting, changes in skin color, or ankle swelling

Patients Should be Advised of these Application Instructions

ANDRODERM should not be applied to the scrotum.
ANDRODERM should not be applied over a bony prominence or on a part of the body that could be subject to prolonged pressure during sleep or sitting. Application to these sites has been associated with burn-like blister reactions.
ANDRODERM does not have to be removed during sexual intercourse, nor while taking a shower or bath.
ANDRODERM systems should be applied nightly. The site of application should be rotated, with an interval of 7 days between applications to the same site.
If the ANDRODERM system becomes loose, smooth it down again by rubbing your finger firmly around the edges. If a patch falls off before noon, replace it with a fresh patch and wear it until you apply a fresh patch(es) that evening. If it falls off later in the day, do not replace it until you apply a fresh patch(es) that evening. If it falls off do not tape ANDRODERM to skin.
If patients or caregivers experience difficulty separating the patch from the release liner or observe transfer of adhesive to the liner, tearing and/or other damage to the patch during removal from the liner, the patch should be discarded, and a new patch should be applied.
ANDRODERM should be applied immediately after opening the individual pouch and removing the protective liner. Do not use if the individual pouch seal is broken or if the patch appears to be damaged. Do not cut patches. Only intact patches should be applied.
Strenuous exercise or excessive perspiration may loosen a patch or cause it to fall off.
Skin burns have been reported at the application site in patients wearing an aluminized transdermal system during a magnetic resonance imaging scan (MRI). Because ANDRODERM contains aluminum, it is recommended to remove the system before undergoing an MRI.
Avoid swimming or showering until 3 hours following application of ANDRODERM [see DOSAGE AND ADMINISTRATION and CLINICAL PHARMACOLOGY].

For all medical inquiries contact: WATSON Medical Communications Parsippany, NJ 07054 800-272-5525

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.

Use In Specific Populations

Pregnancy

Pregnancy Category X [see CONTRAINDICATIONS] — ANDRODERM 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, ANDRODERM 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].

Pediatric Use

Safety and efficacy of ANDRODERM have not been established in males less than18 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 ANDRODERM to determine whether efficacy in those over 65 years of age differs from younger patients. Additionally, there are insufficient long-term safety data in geriatric patients utilizing ANDRODERM to assess a potential incremental risk of cardiovascular disease and prostate cancer.

Renal Impairment

No studies were conducted in patients with renal impairment.

Hepatic Impairment

No studies were conducted in patients with hepatic impairment.

Overdosage & Contraindications

OVERDOSE

No cases of overdose with ANDRODERM 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 ANDRODERM together with appropriate symptomatic and supportive care.

CONTRAINDICATIONS

ANDRODERM is contraindicated in men with carcinoma of the breast or known or suspected carcinoma of the prostate [see WARNINGS AND PRECAUTIONS].
ANDRODERM is contraindicated in women who are pregnant. Testosterone can cause virilization of the female fetus when administered to a pregnant woman. If a pregnant woman is exposed to ANDRODERM, she should be apprised of the potential hazard to the fetus [see Use In Specific Populations].

Clinical Pharmacology

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; and alterations in body musculature and fat distribution. Testosterone and DHT are necessary for the normal development of secondary sex characteristics. Male hypogonadism, a clinical syndrome resulting from insufficient secretion of testosterone, has two main etiologies. Primary hypogonadism is caused by defects of the gonads, such as Klinefelter 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 ANDRODERM.

Pharmacokinetics

Absorption

ANDRODERM delivers physiologic amounts of testosterone, producing circulating testosterone concentrations that approximate the normal concentration range (300 - 1030 ng/dL) seen in healthy men. ANDRODERM provides a continuous daily dose of testosterone in a self-contained transdermal system. Following ANDRODERM application, testosterone is continuously absorbed during the 24-hour dosing period with a median (range) Tmax of 8 (4-12) hours.

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).

During steady-state pharmacokinetic studies in hypogonadal men treated with ANDRODERM, the average DHT:T and E2:T ratios were approximately 1:10 and 1:200, respectively.

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.

Upon removal of the ANDRODERM systems, serum testosterone concentrations decrease with an apparent half-life of approximately 70 minutes. Hypogonadal concentrations are reached within 24 hours following system removal. There is no accumulation of testosterone during continuous treatment.

Effect Of Showering

In a two-way crossover study, the effects of showering on the pharmacokinetics of total testosterone following a single application of ANDRODERM 4 mg/day were assessed in 16 hypogonadal males.

Showering 3 hours after application of ANDRODERM increased Cavg by 0.5% and decreased Cmax by 0.4% respectively, as compared to not showering. The systemic exposure to ANDRODERM was similar following applications with or without showering 3 hours after application.

Clinical Studies

ANDRODERM 2 mg/day and 4 mg/day were studied in a trial designed to evaluate the use and titration of 2 mg/day and 4 mg/day systems in a clinic setting of 40 men with hypogonadism. Thirty-eight of the 40 subjects (95%) who were enrolled into the study were white and 2 subjects were African American. Ten (25%) subjects were Hispanic and 30 (75%) were Non-Hispanic. Men were between 34 and 76 years of age (mean: 55 years). Patients had previously been on stable therapy of ANDRODERM 5 mg; Androgel^® 2.5 g, 5 g, 7.5 g or 10 g; or Testim^® 2.5 g or 5 g daily before switching to ANDRODERM 4 mg/day.

Patients applied an ANDRODERM 4 mg/day system around 10 p.m. once daily for 14 days, and then were titrated up to 6 mg/day or down to 2 mg/day according to a morning serum testosterone concentration obtained at 6 a.m. on Day 8. Out of 36 patients who entered the study, 31 (86%) patients remained on the 4 mg/day dose, 4 (11%) were titrated downward to 2 mg/day, and 1 (3%) was titrated upward to 6 mg/day based on the Day 8 testosterone concentrations. The one patient that was titrated to 6 mg/day discontinued from the study for a non-safety related reason. Of the patients who were receiving ANDRODERM 5 mg/day prior to study entry (n = 11), 10 remained at 4 mg/day after titration, and 1 was titrated down to the 2 mg/day dose.

After a total of 28 days of therapy, 34 of the 35 subjects (97%) had serum testosterone Cavg within the normal range during the dosing period, with the lower bound of the 95% confidence interval for this estimate being 85% (Table 3). One subject who received ANDRODERM 4 mg/day treatment had serum testosterone Cavg below 300 ng/dL and none had Cavg concentrations above 1030 ng/dL. The mean (SD) serum testosterone Cmax following treatment with the 2 mg/day (N = 4) and 4 mg/day (N = 31) systems was 648 (145) ng/dL and 696 (158) ng/dL, respectively. Table 3 summarizes testosterone Cavg categories by treatment.

Table 3. Testosterone Cavg Categories on Day 28 after One Titration on Day 15

CavgCategory	Current Testosterone User N = 35
300 - 1030 ng/dL (n (%) (95% CI))	34/35 (97%) (85%, 100%)
< 300 ng/dL (n (%))	1/35 (3%)

Figure 2 summarizes the pharmacokinetic profiles of total testosterone in 35 patients completing 28 days of ANDRODERM treatment applied as a starting dose of 4 mg/day for the initial 14 days followed by a possible dose titration.

Figure 1. Mean (SD) Steady-State Serum Total Testosterone Concentration (ng/dL) on Day 28

Mean (SD) Steady-State Serum Total Testosterone Concentration (ng/dL) on Day 28 - Illustration

In separate clinical studies using the ANDRODERM 2.5 mg/day system, 1% used 2.5 mg daily, 93% of patients used 5 mg daily, and 6% used 7.5 mg daily. The hormonal effects of ANDRODERM 2.5 mg/day system as a treatment for male hypogonadism was demonstrated in four open-label trials that included 94 hypogonadal men, ages 15 to 65 years. In these trials, ANDRODERM produced average morning serum testosterone concentrations within the normal reference range in 92% of patients.

Medication Guide

What is Androderm?

Androderm is a prescription medicine that contains testosterone. Androderm is used to treat adult males who have low or no testosterone due to certain medical conditions.

Your healthcare provider will test your blood for testosterone before you start and while you are taking Androderm.

It is not known if Androderm is safe or effective to treat men who have low testosterone due to aging.

It is not known if Androderm is safe and effective in children younger than 18 years old. Improper use of Androderm may affect bone growth in children.

What are the possible side effects of Androderm?

Androderm can cause serious side effects including:

If you already have an enlargement of your prostate gland your signs and symptoms may get worse while using Androderm. This can include:
- increased urination at night
- trouble starting your urine stream
- having to pass urine many times during the day
- having an urge that you have to go to the bathroom right away
- having a urine accident
- being unable to pass urine or weak urine flow
Possible increased risk of prostate cancer. Your healthcare provider should check you for prostate cancer or any other prostate problems before you start and while you use Androderm.
Blood clots in the legs or lungs. Signs and symptoms of a blood clot in your leg can include leg pain, swelling or redness. Signs and symptoms of a blood clot in your lungs can include difficulty breathing or chest pain. This can include pain, swelling or redness of your legs.
Possible increased risk of heart attack or stroke.
In large doses Androderm may lower your sperm count.
Swelling of your ankles, feet, or body, with or without heart failure.
Enlarged or painful breasts.
Problems breathing while you sleep (sleep apnea).

Call your healthcare provider right away if you have any of the serious side effects listed above.

The most common side effects of Androderm include:

skin redness, irritation, burning, or blisters where Androderm is applied
back pain
depression
headache
prostate abnormalities

Other side effects include more erections than are normal for you or erections that last a long time. Tell

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

DESCRIPTION

Androderm (testosterone transdermal system) is designed to deliver testosterone continuously for 24 hours following application to intact, non-scrotal skin (e.g., back, abdomen, thighs, upper arms).

Two strengths of Androderm are available that deliver approximately 2 mg or 4 mg of testosterone per day.

Figure 1: System Schematic

The active ingredient in the system is testosterone. The remaining components of the system are pharmacologically inactive.

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