Allegra (Fexofenadine)

Allegra (Fexofenadine)


only for $1.20

Active ingredient: Fexofenadine

Dosage: 120mg, 180mg

Buy Now

What is Allegra (Fexofenadine)?

Allegra, whose active ingredient is fexofenadine, is a medication widely used in the treatment of allergic symptoms. Classified as a second-generation antihistamine, it is favored for its non-sedating properties, meaning it typically does not cause drowsiness, a common side effect associated with first-generation antihistamines. Fexofenadine works by blocking the action of histamine, a substance in the body that triggers allergic symptoms such as itching, swelling, and watery eyes.

Allegra 120mg, 180mg is effective in relieving symptoms of seasonal allergic rhinitis (commonly known as hay fever), and chronic idiopathic urticaria (more commonly known as hives). It is available over the counter and by prescription in various forms including tablets, capsules, and liquid, making it accessible for adults and children alike.

The medication is known for its quick action, often beginning to relieve symptoms within an hour of ingestion and maintaining its effect for 12 to 24 hours. Due to its effectiveness and minimal sedative effects, fexofenadine is a popular choice among those seeking relief from allergies while maintaining normal daily activities.

Frequently Asked Questions about Allegra

What is the use of Allegra tablet?

Allegra tablets are a type of medication commonly used to relieve the symptoms of allergies. When you have allergies, your body reacts to things like pollen, pet dander, or dust, causing symptoms like sneezing, itchy eyes, or a runny nose. Allegra helps by blocking the effects of a substance in the body called histamine, which is released during allergic reactions.

You can take this antihistamine drug to help with the symptoms of seasonal allergies, often known as hay fever, or for year-round allergies. It can also help reduce itching and swelling caused by chronic urticaria, which is a skin condition characterized by persistent hives.

The tablet is usually taken once or twice a day and is effective in making you feel better without making you drowsy, which is a common side effect of some other allergy medications. Always remember to follow the dosage instructions provided by your doctor or on the package, and talk to your doctor if your symptoms do not improve or if you experience any severe side effects.

How does Allegra (Fexofenadine) work?

Allegra, which contains the active ingredient called fexofenadine, works by targeting a specific part of your body’s response to allergens—the release of a chemical called histamine. When you come into contact with something you’re allergic to, your body releases histamine, which is what causes allergy symptoms like sneezing, itching, and watery eyes.

Fexofenadine works as an “antihistamine,” which means it helps stop the histamine from acting on your body, thereby reducing or preventing the symptoms it can cause. Essentially, this drug acts like a shield that blocks the histamine before it can trigger any allergic reaction. This is why after taking this antihistamine, you might notice a reduction in sneezing, itching, or other allergy-related discomforts. It’s helping to keep the histamine in check, so it doesn’t bother you as much.

What is the standard dosage of Allegra?

The standard dosage of Allegra (fexofenadine) can vary depending on what you’re using it for and your age:

  1. For adults and children 12 years and older: The typical dose for treating seasonal allergies or chronic hives is 60 mg twice a day or 180 mg once a day.
  2. For children 6 to 11 years old: The usual dose is 30 mg twice a day.

Allegra comes in several forms, including tablets and liquid. It’s important to follow the dosage instructions on the package or those provided by your doctor.

What is the best way to take Allegra 120mg, 180 mg?

The best way to take Allegra, whether in 120mg or 180mg doses, is fairly straightforward:

  1. Timing: Take Allegra with water. It’s best to take it at the same time each day to keep a consistent level in your body.
  2. Food: You can take the anti-allergic pill with or without food, but avoid taking it with fruit juices like apple, orange, or grapefruit. These juices can make it harder for your body to absorb the medicine effectively.
  3. Intervals: Follow the dosing instructions given by your doctor or on the package label. Usually, it’s taken once a day for allergy relief.
  4. Swallow Whole: Swallow the tablet whole without crushing, chewing, or breaking it. This ensures the medicine works as intended.
  5. Storage: Keep the medicine in a cool, dry place away from sunlight.

How quickly does Allegra start working?

Allegra starts to work fairly quickly to help relieve allergy symptoms. Usually, you’ll begin to feel some relief within an hour after taking it. The full effect of the medication often kicks in within 2 to 3 hours. This makes this drug a good choice for managing symptoms that need quick attention, like sudden allergy attacks. However, everyone’s body reacts differently, so the timing might vary slightly for different people.

What are common side effects of Allegra?

Allegra is generally well-tolerated, but like all medications, it can have some side effects. Here are the most common ones:

  1. Headache: Some people might experience headaches after taking Allegra.
  2. Nausea: Feeling nauseous is another possible side effect.
  3. Dizziness: You might feel a bit dizzy, especially when you first start taking the medication.
  4. Tiredness: Although less common, it can sometimes make you feel unusually tired.

Most of these side effects are mild and often go away as your body gets used to the medication. However, if you find that the side effects are bothersome or don’t go away, it’s a good idea to talk to your doctor.

What can you not take with Allegra?

When taking Allegra, there are a few things you should avoid to ensure the medication works effectively:

  1. Certain medications: Avoid taking antacids that contain aluminum or magnesium within 15 minutes before or after taking Allegra, as they can reduce its effectiveness.
  2. Fruit Juices: It’s especially important to avoid certain fruit juices.

What fruits to avoid with Allegra?

Avoid drinking apple, orange, or grapefruit juice around the time you take your dose. These juices can interfere with how your body absorbs the medication, making it less effective.

Is Allegra a good antihistamine?

Yes, Allegra is considered a good antihistamine for many people. It is effective in treating symptoms of seasonal allergies like sneezing, runny nose, and itchy eyes. One of the big advantages of the medication is that it typically doesn’t make you feel sleepy, which is a common side effect of some other antihistamines. This makes it a good choice if you need to take medication but also need to stay alert and active during the day.

Allegra works by blocking histamine, a substance in your body that causes allergic reactions. It usually starts working within an hour of taking it, and its effects can last for up to 24 hours. Because of its long-lasting and non-sedative properties, this drug is popular among people who need relief from their allergy symptoms throughout the day.

Is it better to take Allegra in the morning or at night?

The best time to take Allegra depends mostly on your symptoms and your daily routine. It is designed to work for 24 hours, so taking it at a consistent time each day is important. Here are some tips to decide whether morning or night might be better for you:

If you have symptoms that are worse in the morning, such as waking up with a stuffy nose or sneezing, taking Allegra tablet in the morning may help control your symptoms throughout the day.

If you experience symptoms mainly in the evening, taking Allegra at night could help manage those symptoms better.

It is non-drowsy, so it shouldn’t make you sleepy. This makes it flexible for use at any time of day without interfering with your ability to stay awake and active.

Where can I get more information about Allegra?

You can get more infoemation about the drug by following the link.


This page does not include all information about this medication and should not replace the medication guide, a consultation with a pharmacist, or advice from your healthcare provider. For the complete medication guide or additional questions, please contact your pharmacist.

By Sarah N. Mendelsohn, MD
Medically Reviewed by: Erin Clarke
Last Update: June 15, 2024

© 2024 All rights reserved.