Insomnia
"I&#039;ve taken melatonin 3g before but I just started taking it again and have been feeling dizzy with extremely bad headaches and my hands are shaky. I also feel it is harder to wake up in the mornings. Not sure if its reacting with my Prozac because before I took Prozac it worked very well. I do recommend it but obviously if you get these symptoms you are going to want to stop."