[Limesparks]

Drugs are chemicals that alter, block, or mimic chemical reactions in the brain. This causes an alteration of the body's normal processes, causing physical (Faster heartbeat, deeper respiration etc.), or mental (Elevated mood, new thought processes etc.) changes.

Drugs are used for a myriad of purposes, from anaesthesia, to psychotherapy, to just being able to wake up in the morning (Caffeine).

Drugs that are used for personal pleasure (often illegally) are called Recreational Drugs. Traditional RD's include marijuana, alcohol (Yes, it is a drug), MDMA (ecstasy), mushrooms, LSD, methamphetamine, heroin, crack/cocaine. Recreational drugs come under many criticisms, and praise by opponents, and users alike. Some believe the use of RD's to be immoral, and life-threatening, while others believe that new and thoughtful insights can come from drug use (especially psychedelics like mushrooms, and LSD)

Other drugs include caffeine, psychedelic mushrooms diphenhydramine, dimehydrinate, mesculine, morphine, dextromethorphan, PCP, and chocolate (Chocolate contains theobromine, which is an effective cough suppressant, possibly more effective than cough syrups, which are also drugs. Theobromine has mild mood elevating effects. It's also the reason you don't feed chocolate to your pets.)