"i&#039;ve been on this medicine for about two weeks. i haven&#039;t noticed any significant change. it does however make me sleep well at night. i do have upset stomach, really strange dreams, and some acne (which i hardly ever do). these are the only complaints i have about the drug. it hasn&#039;t worked great for my back pain but my stepmom takes it and i know it works great for her fibromyalgia."