Testoplex-C (testosterone cypionate 300mg/10ml) is a synthetic form of the male hormone testosterone used to treat hypogonadism in men. It works by replacing or supplementing the testosterone that is naturally produced in the body. It is used to improve symptoms related to low testosterone, including poor sexual performance, fatigue, and diminished bone and muscle mass. The medication is given by an injection and involves a cycle of several weeks. This product should only be used under the supervision of a healthcare professional.