Commonly used illegal drugs include heroin, cocaine, methamphetamine, and, marijuana. These include crack cocaine, heroin, methamphetamine and PCP. Drugs that increase synaptic dopamine concentrations include psychostimulants such as methamphetamine and cocaine. Dopaminergic stimulants like amphetamine, methamphetamine, cocaine, MDMA, and methylphenidate are euphoriants. MDMA is less addictive than other stimulants such as methamphetamine and cocaine. Crystal meth is composed of methamphetamine hydrochloride. Authorities found marijuana, cocaine, and methamphetamine in his flat. Cocaine, heroin, and increasingly methamphetamine are also traded. They are accused of distributing large amounts of methamphetamine, heroin, fentanyl and marijuana. Additionally, stimulants like cocaine, methamphetamine, and even caffeine cause dehydration and dry mouth. He was charged with felony distribution of methamphetamine and misdemeanor possession of drug paraphernalia. Analogues of PPA include ephedrine, pseudoephedrine, amphetamine, methamphetamine, and cathinone. Recent years shows an increase in the consumption of vaporized heroin, methamphetamine and Phencyclidine (PCP). It may be mixed with other substances such as ephedrine, amphetamine, and methamphetamine. This is a conglomerate run by triad bosses which focuses particularly on methamphetamine and cocaine.