Terfenadine

Last updated 25 Nov 2025 | 09:34 AM (UTC)

Terfenadine Uses

Terfenadine is used in the treatment of allergic conditions.

How Terfenadine works

Terfenadine is an antihistaminic medication. It treats allergy symptoms such as itching, swelling, and rashes by blocking the effects of a chemical messenger (histamine) in the body.

Common side effects of Terfenadine

Nausea, Diarrhea, Headache, Stomach pain, Increased liver enzymes, Loss of appetite, Rash, Joint pain, Muscle pain

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Medicine brands for Terfenadine

Trexyl

Sun Pharmaceutical Industries Ltd

Torrent Pharmaceuticals Ltd

Expert advice for Terfenadine

Your doctor has prescribed Terfenadine to help relieve allergy symptoms such as itching, swelling, and rashes.
As compared to other similar medications, it is much less likely to make you feel sleepy.
Be cautious while driving or doing anything that requires concentration as it can cause dizziness and sleepiness.
Do not drink alcohol while taking this medication as it may cause increased sleepiness.
Stop taking Terfenadine at least three days before taking an allergy test as it can affect the test results.
Your doctor has prescribed Terfenadine to help relieve allergy symptoms such as itching, swelling and rashes.
As compared to other similar medications, it is much less likely to make you feel sleepy.
Be cautious while driving or doing anything that requires concentration as it can cause dizziness and sleepiness.
Do not drink alcohol while taking this medication as it may cause increased sleepiness.
Stop taking Terfenadine at least 3 days before taking an allergy test as it can affect the test results.

Frequently asked questions for Terfenadine

Q. Why is Terfenadine banned?

There are some serious side effects associated with this medicine which can prove to be fatal at times. Therefore, the use of Terfenadine is not allowed.

Q. Is Terfenadine the same as Fexofenadine?

No, Terfenadine and Fexofenadine are different medicines. They belong to the same class of medicines known as antihistamines, used in the treatment of various allergic conditions.