The primary function of Testosterone Patch is for testosterone replacement therapy for male hypogonadism, etc.; side effects include local skin irritation reaction, testicular pain, etc. Testosterone is the main endogenous androgen, which can promote the growth and development of male sex organs and maintain male secondary sexual characteristics; maintain nitrogen, sodium, potassium and phosphorus levels and reduce urinary calcium excretion; promote protein synthesis and reduce catabolism, enhance immune function, and promote bone growth; promote erythropoiesis and feedback inhibition of gonadotropin secretion. Testosterone Patch is an androgenic drug, the main function is to provide the male physiological needs of the amount of testosterone. It is mainly used for testosterone replacement therapy for male hypogonadism and for the treatment of partial androgen deficiency syndrome in middle-aged and elderly men. Side effects of the drug include local skin irritation reactions, testicular pain, night sweats (abnormal sweating after going to sleep, sweating stops after waking up), lower limb pain, hearing impairment, upper respiratory tract infections and so on. Medication should be noted: allergic to testosterone patches contained in the ingredients of the patient is prohibited, on the breast cancer and known or suspected prostate cancer in men is prohibited, testosterone may be harmful to the fetus, athletes should be cautious, women are prohibited. If you need to use testosterone patches, it is recommended that you consult a professional doctor and follow the doctor’s instructions for standardized treatment, and not blindly use the drug on your own.