Allegra 120 MG Tablet

Allegra 120 – Composition, Uses, Side-Effects, Warnings

Allegra 120 MG Tablet belongs to an anti-histamine category of drugs, used to treat seasonal and general allergic symptoms like running nose, sneezing, itchy and watery eyes. Get to know how Allegra 120 works, its side effects, precautions, and contraindications where Allegra is not suggested.

Read about similar medication used for allergic symptoms


It is also useful in treating itching conditions caused by the result of hives. Hives are red, swollen, itchy patches on the skin. Sometimes it is also used in combination with some other drugs, depending on the health problem. This medicine is manufactured by Sanofi India Ltd. Allegra 120 is available as an over the counter (OTC) medicine as well as a prescription based medicine. Allegra is available in dosages as mentioned below:

Consider reading about some more antihistamine medicine:

Active ingredients

Fexofenadine is the active ingredient in this drug.

  • Fexofenadine – 120 MG

Available Variants of Allegra

  • Allegra 120mg Tablet
  • Allegra 180mg Tablet
  • Allegra 30mg Tablet
  • Allegra Suspension
  • Allegra-M

How does Allegra 120 work?

Allegra 120 blocks the action of certain chemical messenger called histamine that is released from the cells in the body. Histamine is the key cause of allergic reactions, congestion, itching, and other inflammation.

Allegra 120 Uses

Allergic Rhinitis

Allegra 120 can effectively treat the symptoms of Allergic Rhinitis namely sneezing, runny nose, watery eyes, etc.


Allegra 120 can effectively treat the symptoms of Utricaria which could be red and itchy rashes and raised bumps on the skin.

Allegra 120 helps in relieving seasonal and long-term allergy symptoms, such as:

  • Rhinorrhea
  • Postnasal discharge
  • Ocular pruritus
  • Nasal pruritus
  • Runny nose

These allergic reactions can happen after you touch or inhale allergens such as plant pollen, mold, or pet dander. Allergies usually affect your nose, sinuses, throat, and other areas of your upper respiratory system.

It also helps relieve hives. They are itchy, raised rashes on the skin. Hives often occur with food allergies or medication allergies.

Side effects of Allegra 120

Some side effects might be seen by using this medicine. But they might not occur always. Some may be rare side effects, but serious ones. Following is a list of possible side effects that occur with the usage of this drug. This list is a comprehensive one. It is advisable to visit your Doctor if you notice any of such side effects and that continue for a longer period.

  • Headache
  • Sleepiness
  • Running Nose and Cough
  • Diarrhea
  • Nausea or Vomiting
  • Blurred vision
  • Dry Mouth
  • Sore throat
  • Rashes

Allegra 120 Contraindications


It is not recommended to use this drug if you have a history of allergic reactions towards Allegra 120 or any other anti-histamine drugs.

Kidney Disease

Allegra 120 is also not recommended in patients suffering severe kidney disease.

Allegra 120 Dosage

Follow the directions indicated by the doctor carefully while using the medicine to avoid any unwanted side effects. Your doctor recommends the dosage to be followed based on the following conditions:

  • Health condition being treated
  • Other medical issues if you have any
  • Other medicines that you are taking for any other health problems
  • Patient age
  • Patient gender
  • Patient weight

Doctor’s advice for Allegra 120

  • Allegra 120 is a very safe and well-tolerated medicine for short-term use
  • Consuming high dose can cause serious liver damage
  • If you are suffering from liver disease, inform your doctor first. Your dose may need to be adjusted
  • Avoid excess intake of alcohol while using Allegra 120, together they can affect your liver
  • If you have taken an overdose of Allegra 120 contact your doctor immediately.

Allegra 120 – Precautions & How to Use

Before using Allegra 120, inform your doctor if you are under any medications, or using any over the counter products like vitamin supplements, herbal supplements, etc. If you have any allergies, pre-existing diseases, and information about your current health conditions (for example pregnancy, upcoming surgery, etc.). Much risk getting side effects might be there if you are using this medicine in some health conditions. Inform your Doctor about your health problems if any to avoid side effects. The dosage of this medicine should be followed as directed by your doctor or as the directions printed on the product insert. Dosage is based on your condition and symptoms. Tell your doctor if your condition persists or worsens.


Taking more than prescribed Allegra 120 may cause harmful side effects. Consult your doctor or pharmacist if you find any side effects. Allegra 120 is available in the market in various dosage forms. Read the label carefully before taking this medicine to avoid overdosage. Taking an excess dose can cause confusion, dizziness, diarrhea, headache, fatigue, malaise, restlessness, pruritus, sedation, somnolence, stupor, tremor, tachycardia and urinary retention.

Missing dosage

If you missed a dose, take it earliest possible, and if it’s nearing next dosage schedule, skip the missed dosage and continue the regular dosage schedule. Don’t take an extra dose.

General Warnings

  • Avoid Taking Allegra 120 with alcohol it can increase the risk of stomach bleeding
  • Allegra 120 may be unsafe to use during pregnancy consult your doctor before taking this drug
  • It is safe to use during lactation but it’s important to consult your doctor
  • Should be used with caution in patients with kidney disease. Please consult your doctor before consuming this medication
  • Allegra 120 should be used with caution in patients with renal disease. Dose adjustment may be needed in such cases. Please consult your doctor before taking medication
  • It is advisable to take this medication at bedtime as it makes you drowsy.

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    Allegra 120 - Composition, Uses, Side-Effects, Warnings
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