Cocaine (89% Pure)

Cocaine is a natural product extracted from the leaves of Erythroxylon coca Lam (coca leaves). This tropical shrub is cultivated widely on the Andean ridge in South America and is the only known natural source of cocaine. Normally produced as the hydrochloride salt, it has limited medical use as a topical anaesthetic. The free base, sometimes known as crack, is a smokable form of cocaine. Coca leaves have been used as a stimulant by some indigenous people of South America since historical times. Purified cocaine has been misused as a central nervous system (CNS) stimulant since the early years of the twentieth century. Cocaine is under international control.

Pharmacology
Cocaine has a similar psychomotor stimulant effect to that of amphetamine and related compounds. It increases transmitter concentrations in both the noradrenergic and the dopaminergic synapse and also acts as an anaesthetic agent. Like amphetamine, it produces euphoria, tachycardia, hypertension and appetite suppression. Cocaine has a strong reinforcing action, causing a rapid psychological dependence, an effect even more pronounced in those who smoke cocaine base. Following a 25-mg dose, blood levels peak in the range 400–700 μg/L depending on the route of administration. The main metabolites are benzoylecgonine, ecgonine and ecgonine methyl ester, all of which are inactive. When consumed with alcohol, cocaine also produces the metabolite cocaethylene. Some unchanged cocaine is found in the urine. The plasma half-life of cocaine is 0.7–1.5 hours and is dose dependent. The estimated minimal lethal dose is 1.2 g, but susceptible individuals have died from as little as 30 mg applied to mucous membranes, whereas addicts may tolerate up to 5 g daily.