Prophylactic drug for malaria is

Options

A. tetracycline
B. nux vomica
C. aspirin
D. proguanil

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for a prophylactic drug for malaria. Prophylactic drugs are those that are used to prevent disease rather than to treat it.

2. **Identify the Disease**: Malaria is a mosquito-borne infectious disease caused by the Plasmodium parasite, which is transmitted through the bites of infected female Anopheles mosquitoes.

3. **Review the Options**: The options provided are:
- Tetracycline
- Nux Vomica
- Aspirin
- Proguanil

4. **Evaluate Each Option**:
- **Tetracycline**: This is an antibiotic primarily used to treat bacterial infections. It is not effective against malaria.
- **Nux Vomica**: This is a homeopathic remedy and is not recognized as a treatment for malaria.
- **Aspirin**: This is an analgesic (pain reliever) and anti-inflammatory drug, which does not treat malaria.
- **Proguanil**: This is an antimalarial medication that is used as a prophylactic drug to prevent malaria, especially in areas where chloroquine resistance is common.

5. **Conclusion**: After evaluating all the options, the only drug that serves as a prophylactic for malaria is Proguanil.

**Final Answer**: The prophylactic drug for malaria is **Proguanil**.

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