What is testosterone undecanoate capsule, and how does it work (mechanism of action)?

Testosterone undecanoate is a long-acting man-made version of testosterone, the natural male sexual hormone. Testosterone is responsible for the normal growth and development of male sex organs and characteristics. It includes growth and development of male organs of penis, testicles, prostate, body hair, vocal cord thickening, and muscle and fat distribution. The FDA approved testosterone undecanoate in March 2014.

What brand names are available for testosterone undecanoate capsule?


Is testosterone undecanoate capsule available as a generic drug?


Do I need a prescription for testosterone undecanoate capsule?


What are the side effects of testosterone undecanoate capsule?

Side effects of testosterone undecanoate are:

Special Warning: Aveed may cause a serious lung problem called pulmonary oil microembolism (POME) as well as a serious allergic reaction after receiving the injection.

What is the dosage for testosterone undecanoate capsule?

Males over 18 years of age: The recommended dose of testosterone undecanoate is 750 mg (3 ml) intramuscularly; followed by 750 mg (3 ml) intramuscularly after 4 weeks, then 750 mg (3 ml) intramuscularly every 10 weeks thereafter.

Safe and effective use of testosterone undecanoate is not determined for males under 18 years of age.

Which drugs or supplements interact with testosterone undecanoate capsule?

Testosterone should be used cautiously with warfarin (Coumadin) because testosterone can reduce breakdown of warfarin, leading to increased warfarin blood levels and bleeding risk.

Testosterone can decrease in blood glucose, therefore insulin requirements may change in diabetic patients.

Is testosterone undecanoate capsule safe to take if I’m pregnant or breastfeeding?

Testosterone undecanoate is not recommended for pregnant women or in women who may become pregnant. Testosterone undecanoate causes fetal harm; therefore, it must be avoided.

Although it is not known whether testosterone undecanoate enters breast milk, it is not recommended for nursing mothers due to high risks of infant harm and serious adverse events.

What else should I know about testosterone undecanoate capsule?

What preparations of testosterone undecanoate capsule are available?

Injection: 250 mg/ml

How should I keep testosterone undecanoate capsule stored?

Testosterone undecanoate is stored between 15 C to 30 C (59 F to 86 F), in original cartons until use.

Daily Health News

Trending on MedicineNet

Medically Reviewed on 3/25/2019


Medically reviewed by John P. Cunha, DO, FACOEP; Board Certified Emergency Medicine


FDA Prescribing Information.