Why is Allegra prescribed?

Allegra, with the generic name Fexofenadine Hydrochloride, is used to manage the symptoms of allergies.

What does it do?

Fexofenadine is an antihistamine that blocks the effects of substances called histamine, which is responsible for symptoms such as nasal congestion, sneezing, runny nose, watery eyes, itchy nose, and throat irritation.

How should I take it?

Allegra is currently available as a 60mg tablet taken whole (not split, chewed, or crushed) by mouth, without food. It is also available as a 30mg/5ml suspension taken by mouth, without food. Do not take this drug with fruit juices like apple, orange, or grapefruit.

The dosage strength and frequency depend on every patient’s condition and the doctor’s prescription. It is imperative that you do not self-medicate and only take this drug after consulting with your doctor or pharmacist to determine the best dosage and dosing schedule for the treatment of your condition.

What if I missed a dose?

The desired effects of prescribed medications will only be achieved if taken properly. As much as possible, strictly follow your doctor’s prescribed dosing schedule. However, if you miss a dose, take it immediately and adjust the time of your next dose depending on your doctor’s advice. Never take two doses at the same time just to make up for your missed dose.

What are the special precautions before taking Allegra?

Allegra can cause restlessness and sleep disturbance (insomnia). It would be beneficial to avoid caffeinated beverages like coffee, energy drinks, soda, or tea.

Inform your doctor about all the medications you are taking, your current and previous medical history, and any allergic reactions to Allegra or any other ingredients included in the manufacture of this medication.

Inform your doctor if you had any form of surgery or if you are planning to get one.

For the drug label information of Allegra, click here.

Does it have any side effects?

It is important to note that all drugs have corresponding side effects and adverse reactions. Additional information may be obtained when you ask your doctor or pharmacist.

Common side effects may include:
• Back pain
• Nausea
• Dry mouth
• Abdominal pain or heartburn
• Throat irritation
• Headache

Serious side effects may include:
• Blisters, hives, itching, or rash
• Swelling of any part of the face or limbs
• Hoarseness, difficulty breathing or swallowing
• Rapid and irregular heartbeat
• Sleep disturbance
• Anxiety or restlessness
• Weakness
• Loss of consciousness
• Seizures
• Uncontrollable shaking

Is it safe to take it with another drug?

Some drug interactions may cause life-threatening reactions when taken with other medications. Immediately inform your doctor if you are taking Allegra with any of the following medications:

• Aluminum carbonate
• Aluminum hydroxide
• Apalutamide
• Bempedoic acid
• Biaxin
• Brigatinib
• Clotrimazole
• Diflucan
• Dronedarone
• Erythromycin
• Fostamatinib
• Fostemsavir
• Histamine phosphate
• Lomitapide
• Magnesium carbonate
• Magnesium hydroxide
• Nilotinib
• Nizoral
• Ponatinib
• Quinapril
• Rifampin
• Skin test antigens, multiple
• Sporanox
• St. John’s wort
• Tuberculin purified protein derivative
• Ulipristal
• Vfend

Ask your doctor or pharmacist for other possible interactions not listed within this section.

How should I store it?

Keep Allegra in its original packaging in a clean environment away from excessive heat and moisture. Keep out of reach of children.

What action should I take in case of overdose?

Immediately call an ambulance and seek immediate medical attention to prevent further complications or possible death.

Is it safe for pregnant or breastfeeding women?

Fexofenadine is not recommended for use in pregnant women, women trying to get pregnant, and breastfeeding women. Hence, the potential risks and benefits of using Allegra in pregnant or breastfeeding infants should be carefully considered.

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