I'm going to give this product a five star review because it works. It helps me fall asleep and stay asleep. However, the problem with hormones like melatonin (yes, it is a hormone naturally produced by your body) is that every person metabolizes it differently and is therefore affected differently. While I have been able to fall asleep quickly and stay asleep using ON's melatonin, I wake up drowsy and fatigued, and sometimes even dizzy. Also, I tend to feel hot and jittery in the morning. And once I wake up, it's very hard to get back to sleep. My doctor told me that melatonin can have more pronounced side effects the younger you are (I am in my early twenties) and advised me to try half a pill instead of a whole one. This definitely helped with the side effects for me! I would recommend people to start with a half a pill and go up from there- hey, if it works for you, you will be saving a bunch of money too! Lastly, ON has a great reputation, and shipping on this product was very fast.

I fell in love with this since the first night I tried it! I'm the type of person who struggles to sleep because I think a lot of stuff at night. When I got this I started with half a tablet and I went down real quick and after a week or two I bumped it up to a full tablet and it was great. I slept amazing and woke up really pumped to start the day going, I felt like I REALLY had a great sleep!<br /><br />This supplement helps a ton and since I go hardstyle at the gym it helps me recover from the crazy workouts I hit. I recommend taking this 1 hour or half an hour before going to bed. Ease off everything else like your phone, laptop or TV and have all the lights off too. Children and teenagers should avoid taking melatonin as well as pregnant women. Some common side effects are headaches, dizziness and loss of focus although I haven't had any of those.<br /><br />1 tablet = 3mg of Melatonin<br /><br />If you have any more questions about this product, please don't hesitate in asking me and I'll get back to you as soon as possible.<br />I hope you enjoy your purchase!

I love this stuff. Makes me sleepy and keeps me that way. Not sure how quality differs in melatonin products but this is hands down the best I've used.

This product came with the expected quality. I often times have difficulty sleeping and I found that the melatonin helped a lot. It can take quite a while for it to kick in so make sure to take well in advance of sleep. I've now found that I prefer dissolving capsules. This product is a very good value for the money.

Melatonin is a hormone that is produced by your brain's pineal gland. It helps your body with its rest and wake cycle as well as REM sleep. So introducing supplemental melatonin into your system will help you sleep as well get better sleep. The Optimum Nutrition Melatonin 100 tablets is a top notch supplement. IMO it is better quality than the off the shelf generic pills (G#N#C) I personally got better results with the Optimum. Either way that are cheap and your body naturally produces it so as long as you follow the labels directions you will be fine. I highly recommend them.

This stuff is AWESOME!!! I take one tablet about 30 minutes before I'm ready for bed and I'm out like a light. Very restful deep sleep and I wake up the next morning feeling very energized and ready to go. The only thing is you'll definitely have some crazy dreams on this stuff which doesn't bother me. The only negative thing I have to say is that the first time I purchased this product here on Amazon it was $1.99 with free shipping, now it's time for me to reorder and the price has pretty much tripled!!! Guess I should've bought 3 bottles the first time. I'm starting to notice that Amazon can be a little like the stock market as far as prices are concerned.