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Allegra 24 Hour (Fexofenadine)

Also Known as Telfast

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What is Generic?

What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Allegra is a type of antihistamine medication that is used for alleviating the symptoms associated with hay fever and various other allergic conditions. These symptoms may include watery eyes, a runny nose, itchy eyes, and frequent sneezing.

Allegra 24 Hour kicks in quickly, lasts all day, and won't make you feel sleepy.

  • Fast-acting
  • Non-drowsy
  • 24-hour relief
  • Relieves seasonal allergies caused by grass, trees, ragweed, and pollen
Fact Table
Formula C32H39NO4
License US FDA, US DailyMed, EU EMA
Bioavailability 87%
Legal status OTC (Over-the-Counter)
Chemical Name fexofenadine
Elimination half-life 14.4 hours
Dosage (Strength) 120mg, 180mg
Pregnancy consult a healthcare provider
Brands Allegra 24 Hour
Protein binding 60–70%
PubChem CID 3348
MedlinePlus a697035
ChEBI 5050
ATC code R06AX26
DrugBank DB00950
KEGG D07958
Routes of administration By mouth

Buy Allegra 24 Hour (Fexofenadine) online from online Canadian Pharmacy |


The Allegra 24 Hour dosage is recommended for anyone who is 12 years of age or older. Take this medication on an empty stomach orally. It is advised to take one tablet (120 mg) once daily, accompanied by a glass of water measuring 250 ml.


The active ingredient in Allegra 24 Hour is Fexofenadine.


Only take the recommended dose and do not exceed it.

Ensure that this medication is inaccessible to children.

Do not use it if you have previously experienced an allergic reaction to this medication or any of its ingredients.

Consult your doctor prior to using this medication if you,

  • suffer from kidney disease
  • any other medical condition
  • are pregnant or breastfeeding
  • are over the age of 65


Avoid consuming antacids that contain aluminum or magnesium hydroxide as they can interfere with the efficacy of the Allegra 24 Hour pill. Make sure to allow a minimum of two hours between taking an antacid and consuming Allegra. Do not take this medication with fruit juices, as it may reduce the effectiveness of the medication.

Side Effects

Common side effects may include:

  • Mild dizziness
  • Dehydration of the mouth, nose, or throat
  • Nausea
  • Difficulty sleeping

Cease the use of Allegra 24 Hour and contact your doctor immediately if you encounter any of the following:

  • Rapid or irregular heartbeats, or a sensation of fluttering in the chest.
  • Severe dizziness, anxiety, restlessness, trembling, or nervousness.
  • Respiratory difficulties or swelling in the face, lips, tongue, or throat.

If you're looking to buy Allegra 24 hour, it's important to talk to your doctor first. Your doctor can advise you on the ideal dosage and guarantee that the drug is safe to take.

Frequently asked questions about Allegra 24 hour

What happens if you take 2 Allegra 24 hour pills in a day?

It's crucial to stick to the recommended Allegra 24 hour dosage, which is one pill per 24 hours. Overdosing can lead to side effects such as dry mouth, dizziness, and insomnia. In severe cases, it can cause heart palpitations or excessive drowsiness. However, everyone's response may differ making it best to follow the advice given by your doctor or pharmacist.

Can I take ibuprofen with Allegra 24 hour?

Generally, it is acceptable to combine Allegra 24 hour pill with ibuprofen. Both medications work differently, with Allegra addressing allergy symptoms and ibuprofen helping with pain or inflammation. However, like any combination of medications, monitor your body for unusual reactions and reach out to your healthcare provider if you notice any concerning symptoms.

Can I take Benadryl after taking Allegra 24 hour?

Benadryl and Allegra are both antihistamines, but they work in different ways. While it's generally safe to take both, it could increase the risk of certain side effects such as drowsiness, dry mouth, and dizziness. For that reason, it's advisable to spread out your doses or simply stick with one antihistamine unless directed otherwise by your healthcare provider.

When to take Allegra 24 hour?

Allegra 24 hour pill can be taken at any time of the day. However, to ensure consistent relief from allergy symptoms, it's recommended to take it at the same time every day. Remember, it's essential not to take more than one pill in a 24-hour period to avoid potential side effects.

How long can you take Allegra 24 hour?

Allegra is designed for short-term relief from allergy symptoms. Typically, it can be safely used for up to two weeks. If your symptoms persist beyond two weeks, it's recommended to seek advice from a healthcare provider. Long-term, unsupervised use could potentially lead to unwanted side effects. You can buy Allegra 24 hour from online pharmacies like CanPharm for your convenience.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.