Question

How long does melatonin stay in your system?

Answer 1

Melatonin can remain in your system for about 12 hours. It can remain in your system through the whole night until levels fall back during the waking hours.

Answer 2

Explanation:

The effects of melatonin last according to the dosage. A dosage of 0.5 mg will last only an hour while a 10 mg dosage will last more than seven hours. It all depends on how severe your condition