3 ms·500mg melatonin?? I take like 10mg occasionally and considered it effectiveby cevn 7y ago500mg melatonin?? I take like 10mg occasionally and considered it effectivedaenz 7y agoEdited, 500mcg, sorry about that! Studies show that the smaller doses have great effect http://news.mit.edu/2005/melatonin http://news.mit.edu/2005/melatonincevn 7y agoInteresting, I will give this a try thanks!