Terfenadine belongs to which category of drugs?

Antihistamine

The correct answer is option 3. Antihistamine.

Terfenadine belongs to the category of drugs known as Antihistamines.

Terfenadine is a type of antihistamine medication. Antihistamines are drugs that block the action of histamine, a substance produced by the body during allergic reactions. By blocking histamine receptors, antihistamines like terfenadine alleviate symptoms such as sneezing, itching, watery eyes, and runny nose associated with allergies.
 
Antacids: Antacids are medications that neutralize stomach acid and are used to relieve symptoms of acid reflux, heartburn, and indigestion. They work by raising the pH of the stomach contents, reducing acidity.

Analgesics: Analgesics are pain-relieving medications used to alleviate pain. They include over-the-counter drugs like acetaminophen (Tylenol), ibuprofen (Advil), and aspirin, as well as prescription painkillers like opioids.

Tranquilizers: Tranquilizers, also known as sedatives or anxiolytics, are drugs that reduce anxiety and promote relaxation. They are used to treat conditions such as anxiety disorders, insomnia, and certain psychiatric disorders.

Terfenadine belongs to the category of antihistamines, which are medications used to alleviate symptoms of allergies by blocking the action of histamine in the body.

Structure of Terfenadine (Seldane)