Insomnia Home > Melatonin Side Effects
Daytime drowsiness, dizziness, and abdominal cramps are some of the side effects that may occur with melatonin. In most cases, side effects can be lessened by making adjustments in the dosage or by switching from a daytime to nighttime dosage. There are also a number of potentially serious side effects of melatonin that may require immediate medical attention, such as anxiety, low blood pressure, or seizures.
- Daytime drowsiness
- Abdominal cramps (stomach cramps)
- Nausea and vomiting
- Shakiness (tremor).
- Low blood pressure (known medically as hypotension)
- Depression (or a worsening of depression symptoms)
- Signs of an allergic reaction, such as a rash, hives, itching, swelling of the mouth or throat, wheezing, or difficulty breathing.