What is testosterone?

What is testosterone? Testosterone is a naturally occurring sex hormone that is produced in a man's testicles. Small amounts of testosterone are also produced in a woman's ovaries and adrenal system.

Testosterone injection is used in men and boys to treat conditions caused by a lack of this hormone, such as delayed puberty, impotence, or other hormonal imbalances. Testosterone injection is also used in women to treat breast cancer that has spread to other parts of the body.

How is testosterone injection given? Testosterone is injected into a muscle. A healthcare provider will give you this injection. The injection is usually given every 2 to 4 weeks. The length of treatment will depend on the condition being treated. Testosterone will not enhance athletic performance and should not be used for that purpose.

While receiving this medicine, you will need frequent blood tests. Testosterone can affect bone growth in boys who are treated for delayed puberty. Bone development may need to be checked with x-rays every 6 months during treatment.

What other drugs will affect testosterone? Other drugs may interact with testosterone, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.