Allegra vs. Allegra-D: Know the Difference

By Shumaila Saeed || Published on February 7, 2024

Allegra is an antihistamine for allergies, while Allegra-D adds a decongestant for nasal congestion relief.

Key Differences

Allegra is primarily used to treat symptoms of seasonal allergies, such as sneezing, itchy eyes, and runny nose. Allegra-D combines the antihistamine effects of Allegra with a decongestant to also target nasal congestion and sinus pressure.

Shumaila Saeed

Feb 07, 2024

The key ingredient in Allegra is fexofenadine, which works by blocking histamine, a substance in the body that causes allergic symptoms. In Allegra-D, pseudoephedrine is added as a decongestant to reduce swelling in the nasal passages.

Shumaila Saeed

Feb 07, 2024

Allegra is often recommended for individuals who need relief from allergy symptoms without additional decongestant effects. Allegra-D, on the other hand, is better suited for those who also suffer from congestion related to allergies.

Shumaila Saeed

Feb 07, 2024

A significant difference is that Allegra can be purchased over the counter without restrictions. Allegra-D, due to its pseudoephedrine content, is often kept behind the pharmacy counter in many countries, including the United States.

Shumaila Saeed

Feb 07, 2024

Allegra is generally safe for long-term use with minimal side effects. Allegra-D, because of the decongestant, might not be suitable for individuals with certain health conditions like hypertension or heart disease.

Shumaila Saeed

Feb 07, 2024

Comparison Chart

Primary Ingredient

Fexofenadine

Fexofenadine and Pseudoephedrine

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Feb 07, 2024

Purpose

Antihistamine for allergy symptoms

Antihistamine and Decongestant

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Feb 07, 2024

Symptoms Targeted

Sneezing, itchy eyes, runny nose

Plus nasal congestion and sinus pressure

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Feb 07, 2024

Availability

Over the counter

Behind the counter due to pseudoephedrine

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Feb 07, 2024

Suitability

Safe for long-term use

Caution for those with hypertension or heart issues

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Feb 07, 2024

Allegra and Allegra-D Definitions

Allegra

An over-the-counter allergy medication.

I bought Allegra from the pharmacy without a prescription.

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Jan 21, 2024

Allegra-D

Suitable for severe allergy symptoms including nasal blockage.

When my sinuses are blocked, I switch to Allegra-D.

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Jan 21, 2024

Allegra

An antihistamine medication used to treat allergy symptoms.

I take Allegra daily during spring to manage my hay fever.

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Jan 21, 2024

Allegra-D

An allergy medication with an added decongestant.

Allegra-D clears up my nasal congestion along with my allergies.

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Jan 21, 2024

Allegra

A non-drowsy formula for allergy relief.

Allegra helps me get through my workday without feeling sleepy.

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Jan 21, 2024

Allegra-D

Contains pseudoephedrine for sinus pressure relief.

Allegra-D helps reduce the pressure in my sinuses.

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Jan 21, 2024

Allegra

A medication effective against both indoor and outdoor allergies.

Allegra is my go-to for both pet allergies and pollen.

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Jan 21, 2024

Allegra-D

Available from the pharmacy counter due to decongestant.

I had to request Allegra-D specifically from the pharmacist.

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Jan 21, 2024

Allegra

Suitable for adults and children for allergy management.

Our whole family uses Allegra during allergy season.

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Jan 21, 2024

Allegra-D

Not recommended for individuals with certain health conditions.

My doctor advised against Allegra-D because of my high blood pressure.

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Jan 21, 2024

Repeatedly Asked Queries

Is Allegra-D suitable for everyone?

Allegra-D should be avoided by those with certain health issues, like hypertension.

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Feb 07, 2024

Is Allegra-D a prescription medication?

In many places, it’s available over the counter but kept behind the pharmacy counter.

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Feb 07, 2024

Can children take Allegra?

Yes, there are children-specific formulations of Allegra.

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Feb 07, 2024

How fast does Allegra work?

Allegra typically starts working within an hour.

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Feb 07, 2024

Can I use Allegra-D for a cold?

While it relieves congestion, it's specifically formulated for allergies.

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Feb 07, 2024

What is Allegra used for?

Allegra treats allergy symptoms like sneezing and itchy eyes.

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Feb 07, 2024

What additional benefit does Allegra-D offer?

Allegra-D also relieves nasal congestion and sinus pressure.

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Feb 07, 2024

Are there any side effects of Allegra?

Side effects are rare but can include headache or dizziness.

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Feb 07, 2024

Does Allegra-D cause drowsiness?

Allegra-D is generally non-drowsy, but reactions vary.

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Feb 07, 2024

Can I take Allegra if I'm pregnant?

Consult a doctor before taking Allegra during pregnancy.

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Feb 07, 2024

Can I take Allegra for skin allergies?

Yes, Allegra can be effective for skin allergy symptoms.

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Feb 07, 2024

How long can I safely take Allegra?

Allegra is generally safe for long-term use under guidance.

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Feb 07, 2024

Is there a generic version of Allegra?

Yes, generic versions containing fexofenadine are available.

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Feb 07, 2024

Can I take Allegra-D with high blood pressure?

Consult a doctor, as the decongestant may affect blood pressure.

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Feb 07, 2024

Can I drink alcohol while taking Allegra?

Alcohol may increase the drowsiness effect.

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Feb 07, 2024

Can I take Allegra-D on an empty stomach?

It can be taken with or without food.

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Feb 07, 2024

Does Allegra interact with other medications?

Always consult a doctor, but it has few known drug interactions.

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Feb 07, 2024

Does Allegra-D affect sleep?

It may in some individuals due to the decongestant.

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Feb 07, 2024

Is Allegra effective for pet allergies?

Yes, it can help manage symptoms of pet allergies.

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Feb 07, 2024

Is Allegra-D a controlled substance?

No, but pseudoephedrine regulations vary by region.

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Feb 07, 2024

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About Author

Written by

Shumaila Saeed

Shumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.

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