Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Put your money toward the real thing

I bought this product a fews days before going on vacation and it gave me really bad headaches And I had the weirdest dreams...I know this sounds strange but it was like I couldn't relax my eyes so it was hard to sleep right...That's why I gave it 2 stars because it definitely was doing something...but it made me too sick and I wasn't willing to go thru headaches, as soon as I stopped using it I slept like a baby and was back to normal...