• The compound shown in the figure indicates the morphine, which acts as a sedative.

• Morphine belongs to opioids, which binds to specific receptors present in our central nervous system and gastro-intestinal tract. Morphine is a very effective sedative and painkiller and is very useful in patients who have undergone surgery.

• Cannabinoids such as charas, ganja and hashish act as hallucinogens

• Cocaine acts as a stimulant and it has a potent stimulating effect on the central nervous system. Excessive doses of cocaine cause hallucinations.

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