– Coca alkaloids or cocaine is obtained from the coca plant a native to South America.

It is obtained from dry leaves and branches of coca plants.

$\Rightarrow$ It interferes with the transport of the neuro-transmitter dopamine.

– Cocaine commonly called coke or crack is usually snorted.

It has potent stimulating action on central nervous system, producing a sense of euphoria and increased energy.

$-$ Excessive dosage of cocaine causes hallucinations, sleeplessness and obstructs hunger.

– Atropa belladonna and Datura plants also cause