recreational drugs: methamphetamine (crystal meth), caffeine, tetrahydrocannabinol (thc), mdma (ecstasy), nicotine, amphetamine,

chemical structure molecule molecular atoms model computer 2d two dimensional compound formula structural methamphetamine crystal meth caffeine tetrahydrocannabinol thc mdma ecstasy nicotine amphetamine heroin morphine cathine ephedrine ketamine modafinil lsd amyl nitrite popper cathinone ghb mephedrone mescaline psilocybin stimulant narcotic illegal psychoactive abuse addiction rehab overdose trafficking substance controlled lysergic