More studies and trials are needed before doctors can confirm the use of melatonin as a treatment for cancer. Melatonin comes in a pill and is swallowed. Follow the directions printed on the product label and follow any directions by your doctor. Possible side effects include headache, mental depression, and reduced alertness during the day. If you are pregnant or breast-feeding, you should get the approval of your doctor before taking melatonin.
Some natural remedies have the same effects as prescription medicines.
This means there is a danger of being overmedicated. If you have any unusual effects while taking any natural remedy, get advice from a doctor right away. Do not take melatonin with sedative drugs or alcohol. Natural remedies and prescription medicines may interact. Lack of standardization may result in products with different strengths and effects.