How many melatonin 300mcg are safe to take at once?

The typical recommended dose of melatonin for most adults ranges from 0.5 mg to 5 mg (500 to 5000 mcg), taken 30 minutes to an hour before bedtime. While some individuals may tolerate higher doses, taking more than necessary can lead to side effects such as drowsiness, headaches, or dizziness. It is best to start with the lowest effective dose and consult with a healthcare provider for personalized advice, especially since the safety of high doses can vary between individuals.