Will testosterone cypionate injections make your penis bigger?

Anatomy. Nope. It may make your testicles smaller and some men do report that they feel that their penis is smaller. One does not take this treatment unless it is medically indicated.\ i know of no valid reports that testosterone replacement causes a penis to enlarge.
Testosterone. If you are an adult, the size of your penis will not enlarge except by having erections but it will not add length or girth to your penis.