What else is it called? 

Coke, Charlie, C, Crack

Cocaine is a very powerful stimulant.  It is a white powder extracted from the leaves of the Coca plant. 
The powder is usually snorted, but can also be injected.  The drug is also processed into a crystallized form called Cracic, which is then smoked.

Effects 
The drug produces a feeling of excitement, confidence.  Appetite is suppressed, you don’t feel tired and can tolerate pain.

Long Term Use / Effects
• Users develop physical tolerance leading to strong craving for the drug.
• Weight loss, restlessness, depression and paranoia.
• Diminished sexual desire.
• Snorting can also lead to the membranes of the nose being damaged.
• Can cause convulsions in heavy users.
• Large doses can cause death from heart or respiratory problems.

The Law
It is illegal under U.A.E. law for anyone to either possess or use cocaine.  There are stiff sentences for those who are caught.