Consult a health care practitioner prior to use if you suffer from hormonal problems, diabetes, seizure disorders, migraines, hypertension, are taking blood pressure medication, sedatives and/or hypnotics, or if chronic insomnia persists for more than 4 weeks. Do not use if you are taking immunosuppressive drugs, or if you are pregnant or breast-feeding.
If you are affected by depression or feel you need psychological support, you should consider using one of the following two sources: Depression and Suicide
Do not drive or operate machinery for five hours after taking melatonin.