Methyltestosterone is a synthetic anabolic-androgenic steroid, a derivative of testosterone. It is an orally active form of testosterone that has been chemically altered to increase its bioavailability when taken by mouth. It is classified as an androgen, a type of hormone that primarily influences the development and maintenance of male characteristics. In medicine, methyltestosterone has been used for testosterone replacement therapy in men with hypogonadism, delayed puberty in males, and in certain breast cancers in women. Due to its androgenic properties, it also carries the potential for masculinizing effects. (DrugBank)
Deep dive
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Known interactions
Category rule: peptide × hormone
Note
Injectable peptides plus hormones can have overlapping or compounding effects that aren't always well characterized.
Track bloodwork with a provider; don't assume combinations are neutral.
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Related compounds
Others in the hormone category or studied for the same goals.