What Is Testosterone Cypionate Used For?

How Does It Work?

Testosterone cypionate contains the hormone testosterone in a special oil formulation that is injected into a muscle. Testosterone is slowly absorbed from the oil into the bloodstream after the injection, allowing for injections just once every two to four weeks in most cases. It works by increasing testosterone to a normal level.
Testosterone cypionate must be injected, as taking it by mouth would have little effect on testosterone levels. When medications are taken by mouth, they must first pass through the liver before they reach the bloodstream. The liver metabolizes testosterone extensively before it has a chance to reach the bloodstream, and adequate blood levels of the medication usually cannot be achieved. However, when testosterone is injected into a muscle, it bypasses the liver, allowing significant amounts of the hormone to reach the bloodstream.

Is It Safe for Children to Use Testosterone Cypionate?

Testosterone cypionate is not approved for use in boys under the age of 12, as it has not been adequately studied in children. Testosterone cypionate is sometimes used to help start puberty in adolescent boys who would otherwise not go through puberty without the help of additional hormone replacement. There are no widely accepted uses for testosterone cypionate in younger boys.

Are There Off-Label Uses?

On occasion, your healthcare provider may recommend this medicine for something other than treating low testosterone in men. This is known as an "off-label" use. For example, some off-label uses of testosterone cypionate include treating the following conditions:
  • Low testosterone in women (even though testosterone is thought of as a "male" hormone, women also produce a small amount of testosterone)
  • Certain cancers in women
  • Hormone therapy in transgender individuals (as part of a "sex change" process)
  • Slightly low, but still considered normal, testosterone levels in men.
Androgens, including testosterone cypionate, are sometimes used to enhance athletic performance. However, this use is considered unethical, both from a medical standpoint and from an athletics point of view.
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