The help aiding sleep is only one function for melatonin. The reason for higher suggested doses is due to its anti-oxident function. From personal experience me

The help aiding sleep is only one function for melatonin. The reason for higher suggested doses is due to its anti-oxident function. From personal experience melatonin needs to be paired with vitamin e to really clear out over night. I take vitamin e as I get into bed right before I take a melatonin sublingual. Another benefit of melatonin is that it upregulates our insulin receptors.