Buy Ritalin 20 mg online, the medicine is called an analeptic, and it helps people who feel really sleepy because of narcolepsy, which means they can suddenly fall asleep or feel very drowsy. It is also approved by the food and drug administration to help with sleep problems that some people have because of working different shifts. In the beginning, during the first two weeks, some people might experience allergies. Ritalin is often used by people for reasons other than medical ones because it is considered a safe stimulant.