As a dietary supplement, take one 300mcg Melatonin capsule daily.
While it is common to see doses of melatonin at 3mg ,5mg, or 10mg increments, the concept of “more is better” does not always hold true for melatonin dosing. In fact, melatonin is usually more effective in lower doses for most people.
A study on subjects who had trouble sleeping showed that Melatonin dosage of 300mcg was more effective than 3mg. A comparative study on melatonin dosage between 500mcg and 20mg in blind subjects revealed that 500mcg was more effective at regulating circadian rhythm than 20mg. Moreover, this was re-trialed later by comparing 10mg to 20mg and results found that 10mg was still more effective than 20mg but was insignificantly different from a 500mcg dose.