adhd
"I have been taking Ritalin for almost 3 years & it has been great. I had ADHD in high school & college. I couldn't focus, listen to lectures, read well or study. I saw a doctor during college & he prescribed me Ritalin 20mg 3x/day (I had long days in college). I was finally able to read well, study & focus. I love learning now, I'm motivated & my mood improved. Now I take 20mg 2x/day (I graduated & go to bed earlier). It lasts around 4 hours. I never experience withdrawal or major sleepiness when I don't take it. Side effects: Difficulty sleeping if taken too close to bed time & appetite loss (minor). I highly suggest an eating schedule and drinking lots of water so you don't eat too little. I would often forget to eat in the beginning."