Cocaine. 298 pages on this wiki. Cocaine (Methylbenzoylecgonine) is a crystalline tropane alkaloid that is obtained from the leaves of the coca plant. It is a very addictive drug and is used frequently by Tony Montana, who also sells the drug to make a profit.ocaine (Methylbenzoylecgonine) is a crystalline tropane alkaloid that is obtained from the leaves of the coca plant.