Approximately 40% of testosterone in plasma is bound to SHBG, 2% remains unbound (free) and the rest is loosely bound to albumin and other proteins. The average daily testosterone concentration produced by TESTIM 100 mg at Day 30 was 612 (± 286) ng/dL and by TESTIM 50 mg at Day 30 was 365 (± 187) ng/dL. Male hypogonadism, a clinical syndrome resulting from insufficient secretion of testosterone, has 2 main etiologies. 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. Treatment of overdosage would consist of discontinuation of TESTIM, washing the application site with soap and water, and appropriate symptomatic and supportive care. There is a single report in the literature of acute overdosage after injection of testosterone enanthate. There were no reports of overdose in the TESTIM clinical trials. This medication is absorbed through the skin, enters your bloodstream, and helps your body reach normal testosterone levels. Of 192 hypogonadal men who were appropriately titrated with Testim® and who had sufficient data for analysis, 74% achieved an average serum testosterone level within the normal range on treatment Day 90. During the first 60 days, patients were evenly randomized to Testim® 50 mg, Testim® 100 mg, placebo gel, or testosterone transdermal system. Testim® was evaluated in a randomized multicenter, multi-dose, active and placebo controlled 90-day study in 406 adult males with morning testosterone levels ≤300 ng/dL. In patients treated with Testim® there are no observed differences in the average daily serum testosterone concentration at steady-state based on age or cause of hypogonadism. However, it has been reported that AndroGel, a transdermal gel formulation of testosterone, has become the most popular form of testosterone in androgen replacement therapy for hypogonadism in the United States. The reasons cited were limited efficacy (about one additional sexually satisfying event per month), concerns about safety and potential adverse effects with long-term therapy, and concerns about inappropriate off-label use. In contrast to these high doses, there is little support for the notion that testosterone is a critical hormone for sexual desire and function in women under normal physiological circumstances. Although testosterone has been found to be effective at improving sexual function in postmenopausal women, the doses employed have been supraphysiological. A subsequent 2017 systematic review and meta-analysis of studies including over 3,000 postmenopausal women with HSDD similarly found that short-term transdermal testosterone therapy was effective in improving multiple domains of sexual function. Testosterone therapy is effective in the short-term for the treatment of hypoactive sexual desire disorder (HSDD) in women. Women accidentally exposed to this medication may have side effects due to testosterone gel. However, when given to men with hypogonadism in the short- and medium-term, testosterone replacement therapy does not increase the risk of cardiovascular events (including strokes and heart attacks and other heart diseases). The FDA now requires warnings in the drug labeling of all approved testosterone products regarding deep vein thrombosis and pulmonary embolism. Due to an increased incidence of adverse cardiovascular events compared to a placebo group, a Testosterone in Older Men with Mobility Limitations (TOM) trial (a National Institute of Aging randomized trial) was halted early by the Data Safety and Monitoring Committee. Results from the TRAVERSE trial were submitted in 2023, concluding that there was no increase in the risk of adverse cardiovascular outcomes in men using testosterone for hypogonadism. The FDA stated in 2015 that neither the benefits nor the safety of testosterone have been established for low testosterone levels due to aging. In women, testosterone can produce hirsutism (excessive facial/body hair growth), deepening of the voice, and other signs of virilization. Studies have reported that testosterone boosters work to some extent. Testosterone boosters, also known as test boosters, claim to help increase testosterone levels. According to research, men with low testosterone levels are more likely to have chronic diseases such as high blood pressure and type II diabetes. However, a good diet and an active lifestyle may help keep your levels of testosterone within the recommended range. Otherwise considered an adverse effect of testosterone, reduced spermatogenesis can be further suppressed with the addition of a progestin such as norethisterone enanthate or levonorgestrel butanoate, improving the contraceptive effect. Testosterone helps the body to develop and maintain the male sexual characteristics (masculinity), such as a deep voice and body hair. It is used for hormone replacement in men who are not able to produce enough testosterone (for example, due to hypogonadism). To decrease this risk, carefully follow all directions for the proper use of this drug. Children should avoid contact with the unwashed or unclothed area where the medication has been applied. When 6 males used a shirt to cover the abdomen at 15 minutes post-application and partners again rubbed abdomens for 15 minutes at the 1 hour timepoint, the potential for transfer was markedly reduced. Testim is a prescription medicine that contains testosterone. RxList does not provide medical advice, diagnosis or treatment. This leaflet does not take the place of talking to your healthcare provider about your medical condition or treatment. The effect of showering (with mild soap) at 1, 2, and 6 hours post application of TESTIM 100 mg was evaluated in a clinical trial in 12 men. If the serum testosterone concentration is below the normal range (300 ng/dL to 1,000 ng/dL), the daily TESTIM dose may be increased from 50 mg testosterone (one tube) to 100 mg testosterone (two tubes) once daily. Priorto initiatingTESTIM, confirm the diagnosis of hypogonadism by ensuring that serum testosterone concentrations have been measured in the morning on at least two separate days and that these serum testosterone concentrations are below the normal range. Our Testim 1% (testosterone gel) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. Estrogens can reduce the effects of testosterone by increasing the hepatic production and in turn circulating levels of sex hormone-binding globulin (SHBG), a carrier protein that binds to and occupies androgens like testosterone and DHT, and thereby reducing free concentrations of these androgens. Testosterone treatment at doses that were comparable to those used for testosterone replacement therapy resulted in structural impairments in both female and male offspring. If testosterone abuse is suspected, check serum testosterone concentrations to ensure they are within therapeutic range. Some studies, but not all, have reported an increased risk of MACE in association with use of testosterone replacement therapy in men. In diabetic patients, the metabolic effects of androgens may decrease blood glucose and, therefore, may necessitate a decrease in the dose of anti-diabetic medication. Subjects could be counted in both TESTIM treatment groups if they received both 50 mg and 100 mg at different points in the study and experienced an adverse reaction at both doselevels. To ensure proper dosing, serum testosterone concentrations should be measured. The recommended starting dose of Testim is 5 g of gel (one tube) containing 50 mg of testosterone applied once daily (preferably in the morning) to clean, dry intact skin of the shoulders and/or upper arms.