Endogenous

Trims visceral fat while boosting IGF-1 levels, great for shredded longevity looks.

Synthetic decapeptide identical to endogenous GnRH that stimulates the pituitary to release LH and FSH; used diagnostically and, off-label, to support the gonadal axis during testosterone therapy.

Testosterone cypionate is a long-acting oil-soluble ester of the endogenous androgen testosterone, administered by intramuscular or subcutaneous injection. It is FDA-approved for testosterone replacement therapy in adult males diagnosed with primary or hypogonadotropic hypogonadism.

Testosterone enanthate is a long-acting ester of testosterone administered by intramuscular or subcutaneous injection. It is FDA-approved for testosterone replacement therapy in adult males with primary or hypogonadotropic hypogonadism.

Testosterone propionate is a short-acting ester of testosterone administered by intramuscular injection. It is an approved androgen ester used for testosterone replacement; its short half-life requires more frequent administration compared to longer esters.

Enclomiphene is the trans-isomer of clomiphene and a nonsteroidal selective estrogen receptor modulator (SERM). It has been investigated for secondary hypogonadism but has not received FDA approval; it may be available through compounding pharmacies in some jurisdictions.

Clomiphene citrate is a nonsteroidal SERM consisting of a mixture of enclomiphene (trans) and zuclomiphene (cis) isomers. It is FDA-approved for ovulation induction in women; its use in males to raise endogenous testosterone is off-label.

DHEA (dehydroepiandrosterone; prasterone) is an endogenous adrenal steroid that serves as a precursor to androgens and estrogens. The vaginal insert formulation (Intrarosa) is FDA-approved for dyspareunia due to menopause; oral DHEA products are sold as dietary supplements and do not have an FDA drug approval for systemic hormone replacement.

Pregnenolone is an endogenous neurosteroid and the first committed steroid produced from cholesterol. It is not FDA-approved as a drug and is available as a dietary supplement or through compounding.