Which of the following drug is a very effective sedative and pain killer, and is very useful in patients who have undergoes surgery ?

Options

A. Cocaine
B. Amphetamine
C. Morphine
D. Heroin

Answer

To solve the question regarding which drug is a very effective sedative and painkiller useful for patients who have undergone surgery, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Drug Types**:
- The question lists several drugs: Cocaine, Amphetamine, Morphine, and Heroin. We need to categorize these drugs based on their effects.

2. **Analyze Cocaine**:
- Cocaine is a stimulant. It stimulates the nervous system, increasing alertness and activity. This means it is not a sedative or a painkiller.

3. **Analyze Amphetamine**:
- Amphetamine is also a stimulant. Similar to cocaine, it enhances alertness and activity, making it unsuitable as a sedative or painkiller.

4. **Analyze Morphine**:
- Morphine is classified as an opioid. It is known for its effectiveness as a sedative and painkiller, particularly useful for patients who have undergone surgery. It helps alleviate pain and induces sedation.

5. **Analyze Heroin**:
- Heroin is another opioid but is primarily a depressant. While it can have pain-relieving properties, it is not used in medical settings for pain management due to its potential for addiction and other harmful effects.

6. **Conclusion**:
- Based on the analysis, Morphine is the drug that is a very effective sedative and painkiller, making it the correct answer to the question.

### Final Answer:
The correct answer is **Morphine**.

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