What is main effect of sedatives and tranquillizers?

Explanation

### Step-by-Step Text Solution:

1. **Definition of Sedatives and Tranquilizers**: Sedatives and tranquilizers are types of drugs that are primarily used to calm the nervous system. They are often prescribed to help manage conditions such as anxiety, depression, and insomnia.

2. **Examples of Sedatives**: Common examples of sedatives include barbiturates and certain hallucinogenic drugs like LSD. Morphine is also considered a sedative due to its pain-relieving properties.

3. **Function of Tranquilizers**: Tranquilizers are specifically used to treat anxiety, fear, and tension. They help in reducing the symptoms associated with these conditions.

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