Testosterone undecanoate should not be taken by normal people. Testosterone Undecanoate is an androgenic drug that can be used by men to treat testosterone deficiency when it is confirmed through tests, and by women when they need to masculinize themselves and undergo male gender transformation; however, testosterone undecanoate should not be taken by normal people in good health, as it can lead to high androgen levels in the body and damage an individual’s health. Adverse effects that may be caused by the application of testosterone undecanoate include erythrocytosis, psychiatric disorders, gastrointestinal disorders, itchy skin, acne, high blood pressure, and feminization of the male breasts. Testosterone undecanoate is contraindicated in men who have been diagnosed or suspected of having prostate or breast cancer, in women who are pregnant or breastfeeding, and in those who are allergic to any of the ingredients contained in the drug. If you experience any androgen-related adverse effects after using testosterone undecanoate, you should stop using the drug immediately and wait until the symptoms disappear before starting with a lower dose. Individuals should never abuse testosterone undecanoate, and the drug should be used only in strict accordance with the doctor’s instructions.