Do not use this product unless advised by a physician if you are pregnant, attempting to become pregnant, or nursing; or if you are taking any medications or have any chronic disease, including hypertension (high blood pressure), diabetes, or an endocrine, aut-immune, depressive, bleeding or seizure disorder. Do not take melatonin while operating a motor vehicle or machinery. Not intended for individuals under the age of 18. Consult your health care professional before use. Do not use if imprinted seal under cap is broken or missing.