> Melatonin is OTC in the US (sadly not where I live) and the efficacy of melatonin on sleep quality is pretty hard to dispute. The Mayo Clinic's website doesn

> Melatonin is OTC in the US (sadly not where I live) and the efficacy of melatonin on sleep quality is pretty hard to dispute. The Mayo Clinic's website doesn't quite feel as strongly as you do about Melatonin: > The hormone melatonin helps control your natural sleep-wake cycle. Some research suggests that melatonin supplements might be helpful in treating jet lag or reducing the time it takes to fall asleep — although the effect is typically mild. Side effects can include headache and daytime sleepiness. [0] Another page from Mayo Clinic's website: > Melatonin might also reduce the time it takes to fall asleep — although this effect is typically mild. [1] I wouldn't tout Melatonin as the great counterexample of a nootropic that's OTC, considering it's questionable value and limited long-term use. [0] - http://www.mayoclinic.org/healthy-living/adult-health/in-depth/sleep-aids/art-20047860?pg=2 [1] - http://www.mayoclinic.org/healthy-living/adult-health/expert-answers/melatonin-side-effects/faq-20057874