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Yes, I don't use it often, but when I do, .25mg is plenty. I don't know why they even sell the 3mg tablets.

I've seen speculation that the reason you never see melatonin pills less than 1mg is this patent:

"the dose of melatonin administered ranges from 0.1 to 1.0 mg of melatonin"

The larger dosages supposedly have less risk of running afoul of the patent.

I don't know why they sell the 3mgs either because nothing less than three of them has any effect on me. Thank god for 10mg tablets.