Why do antihistamines not affect the secretion of acid in stomach ?

Explanation

### Step-by-Step Solution:

1. **Understanding Antihistamines**:
- Antihistamines are medications that counteract the effects of histamines in the body. Histamines are chemicals released during allergic reactions that can cause symptoms like itching, swelling, and mucus production.

2. **Role of Histamines in the Body**:
- Histamines play various roles in the body, including the regulation of gastric acid secretion. However, antihistamines specifically target histamine receptors associated with allergic reactions, not those involved in gastric acid secretion.

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