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 ...

Most people know the feeling of getting a shot and having your arm feel sore for several days afterward. Some might even expect it as a side effect. The soreness happens when medications are injected ...

Testosterone injections are a treatment for sexual dysfunction in males and for low testosterone in either males or females. They can also be part of gender affirming care. Although testosterone ...

This article was reviewed by Felix Gussone, MD. Key Takeaways: In the U.S., testosterone is a controlled substance, so you’ll ...