Testosterone This substance, produced in the testicles (in men), ovaries (in women) and in the adrenal cortex, is responsible for the formation of secondary sexual characteristics of the male type (hair growth, rough low voice, etc.), and also promotes the growth of muscle mass and forms libido. 30 capsules. Expires January 2025. Made in the USA. Before your appointment, I recommend that you consult a doctor. There is Potassium Citrate Extended vitamin. 100Tablet. 1080 mg.