Which of the following is/are neurologically active drug/s .

Options

A. Aspirin
B. Phenelzine
C. Heroin
D. All the drug

Answer

To determine which of the following drugs are neurologically active, we need to analyze each option provided: Aspirin, Phenylzine, Heroin, or all the drugs.

### Step-by-Step Solution:

1. **Define Neurologically Active Drugs**:
- Neurologically active drugs are those that affect the central nervous system (CNS), which includes the brain and spinal cord. They can alter mood, perception, and behavior.

2. **Analyze Aspirin**:
- Aspirin is primarily known as a pain reliever and anti-inflammatory drug. It works by inhibiting the production of prostaglandins, which are chemicals in the body involved in inflammation and pain signaling.
- While it does have some effects on the nervous system (such as pain relief), it is not classified as a neurologically active drug in the same sense as those that directly alter brain function or mood.

3. **Analyze Phenylzine**:
- Phenylzine is an antidepressant that belongs to a class of drugs known as monoamine oxidase inhibitors (MAOIs). It is used to treat depression by increasing the levels of neurotransmitters in the brain, thus affecting mood and emotional state.
- Since it directly impacts brain activity and mood, Phenylzine is considered a neurologically active drug.

4. **Analyze Heroin**:
- Heroin is an opioid that is highly addictive and acts on the brain's reward system. It alters the perception of pain and can produce feelings of euphoria.
- Heroin is classified as a neurologically active drug because it significantly affects the central nervous system and alters mood and behavior.

5. **Conclusion**:
- Based on the analysis:
- Aspirin: Not primarily neurologically active.
- Phenylzine: Neurologically active.
- Heroin: Neurologically active.
- Therefore, the correct answer to the question "Which of the following is/are neurologically active drug/s?" is **Phenylzine and Heroin**. However, if the options include "all the drugs," it would be misleading since Aspirin is not primarily neurologically active.

### Final Answer:
- The neurologically active drugs among the options provided are **Phenylzine and Heroin**.