Stimulants are medications that have the effect of increasing one’s energy levels, blood pressure, level of alertness, attention span, and respiratory rate. They have been used to treat a variety of conditions, including obesity, neurological problems, asthma, respiratory difficulties, and other diseases. Their use has waned in recent years as doctors have come to recognize their potential for abuse and addiction. Currently, Uppers are usually only prescribed to treat certain kinds of health problems, such as narcolepsy, recalcitrant depression, and attention deficit hyperactivity disorder (ADHD). many popular stimulants are on sale now, such as: A-PPP, 4F-PHP, HEX-EN, 4-MPD, 4-CPRC, MEXEDRONE, 4-EMC and so on.