Which of the following statements is not true for cocaine ?

Options

A. It is commonly called coke or crack and is usually snorted.
B. It is obtained from coca plant Erythroxylum coca.
C. It has potent suppressing action on central nervous system.
D. It interferes with the transport of dopamine neurotransmitter.

Answer

To determine which statement about cocaine is not true, we will analyze each statement provided in the question.

1. **Statement 1**: Cocaine is commonly called "cock" or "crack" and is usually snorted.
- This statement is true. Cocaine is indeed known by these street names and is often consumed through snorting.

2. **Statement 2**: Cocaine is obtained from the coca plant, Erythroxylum coca.
- This statement is also true. Cocaine is derived from the leaves of the coca plant, specifically Erythroxylum coca.

3. **Statement 3**: Cocaine has a suppressing action on the central nervous system.
- This statement is false. Cocaine is a stimulant and actually has a stimulating effect on the central nervous system, increasing alertness and energy levels.

4. **Statement 4**: Cocaine interferes with the transfer of the dopamine neurotransmitter.
- This statement is true. Cocaine blocks the reuptake of dopamine, leading to increased levels of this neurotransmitter in the synaptic cleft, which contributes to its euphoric effects.

After analyzing all the statements, we find that the statement that is not true for cocaine is:

**Answer**: Cocaine has a suppressing action on the central nervous system.