Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great product!

I have fibromylagia and for years I was taking prescription meds. I decided to go the natural route, and started researching supplements and vitamins that I could take. That is when I found melatonin helps people with fibro. My symptoms are now non existent! I take 1 pill before bed (with my magneisum malate) and I sleep through the night, I am not achy, and I wake up finally feeling refreshed and ready to take on the day. I love the Nature's Bounty due to the price for the amount of tablets that you get. I would not recommend going over the 3 mg because I have taken two (because I couldn't sleep at times) and I wake up with a headache or I feel really groggy. The 3mg is just right! These pills have completely altered my life!