Testosterone, a sex hormone produced by both males and females, is often associated with libido and muscle mass. This universal hormone is also responsible for much more, like sleep, bone health and ...

An intramuscular injection delivers medication into a muscle. Doctors frequently use intramuscular injections to administer vaccines and certain other drugs. Injection sites include the upper arm, hip ...

Doctors may prescribe testosterone replacement therapy to treat low testosterone levels. It can cause benefits and side effects and may not be safe for people who have a high risk of certain health ...

Testosterone replacement therapy (TRT) is a common treatment for easing symptoms of low testosterone (hypogonadism) in men. These symptoms include ED, low libido, fatigue, muscle loss, and depression.