Which among the following is an antacid?

The correct answer is Option (2) → Zantac.

The antacid among the given options is Zantac.

Explanation of the options:

1. Aspirin:

Aspirin is a non-steroidal anti-inflammatory drug (NSAID).

Uses: It is used to relieve pain, reduce inflammation, and lower fever.

Action: Aspirin works by inhibiting the enzyme COX (cyclooxygenase), which is involved in the production of prostaglandins (substances that mediate pain and inflammation).

Not an antacid: Aspirin is not used to neutralize stomach acid. In fact, it can irritate the stomach lining and worsen acidity.

2. Zantac (Ranitidine):

Zantac (brand name of ranitidine) is an antacid that belongs to the class of \(H_2\) receptor antagonists.

Uses: It is used to reduce stomach acid production and is commonly prescribed for conditions like acid reflux, heartburn, peptic ulcers, and gastroesophageal reflux disease (GERD).

Action: Zantac works by blocking histamine receptors in the stomach lining, which decreases acid secretion. This helps relieve symptoms of acidity.

Antacid: Zantac is an antacid as it helps reduce the amount of acid in the stomach

3. Equanil:

Equanil is a tranquilizer (brand name of meprobamate).

Uses: It is used to treat anxiety disorders and for its sedative and muscle relaxant properties.

Not an antacid: Equanil is not related to the treatment of acid-related disorders.

4. Noradrenaline (Norepinephrine):

Noradrenaline is a neurotransmitter and hormone.

Uses: It is used in emergency medicine to treat conditions like low blood pressure and shock by constricting blood vessels and increasing heart rate.

Not an antacid: Noradrenaline is involved in the body's fight-or-flight response and has no role in neutralizing stomach acid.

Conclusion:

Zantac is the antacid in this list, used to treat conditions related to excess stomach aci