Allegra-M Tablet: Uses, Side Effects, Composition, Price & Dosages

Allegra-M Tablet is commonly used for the treatment of seasonal allergy symptoms and asthma . It is also used for the treatment of hay fever . Allegra belongs to a class of medicines known as antihistamines. Antihistamines help in the reduction of the effects of histamine (natural chemical) in the body. Histamines are known to produce symptoms such as watery eyes, itching , sneezing etc. Allegra-M Tablet belongs to leukotriene receptor antagonist group.  It is manufactured in India by the Sanofi India manufactures.

Allegra comes in two forms:

(a) Tablet

(b) Syrup

Allegra-M Tablet

Uses and Benefits of Allegra-M:

Though commonly used for the treatment of Asthma and other allergies, the use of Allegra-M Tablet is not limited to this. The uses of Allegra-M have been found for the prevention, control, treatment or improvement of many other illnesses and conditions such as:

  • Perennial and Seasonal allergic rhinitis
  • Skin allergies
  • Asthma
  • Hay fever
  • Asthma caused due to Exercise
  • Allergic skin conditions
  • Hay fever
  • Chronic asthma
  • Seasonal allergic rhinitis
  • Exercise-induced asthma

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Side Effects of Allegra-M:

Some of the most commonly occurring side effects of Allegra-M Tablet are:

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Common Dosage of Allegra-M:

Allegra-M Tablet comes with strength of 10mg is usually advised to be taken once a day. The dosage may vary as it depends on a variety of conditions such as:

  • Age
  • Weight
  • Medical condition
  • Medical history
  • Allergy History

Missed dose

In case if a patient misses a dose of the Allegra-M Tablet then take the medicine as soon as possible. However, if it is the time of second dose then don’t double up the dose as it might have serious side effects.


It is advisable not take more medicines than prescribed by the doctor because it might lead to serious health problems. In case if a patient faces any kind of allergy or reaction then consult the doctor as soon as possible.

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Composition & Nature of Allegra-M:

There are two major ingredients of the Allegra-M Tablet:

(a) Fexofenadine (120 Mg)

(b) Montelukast (10 Mg)

When Allegra-M is prescribed?

Allegra-M Tablet is prescribed by the doctors to patient in these cases:

  • To treat asthma: Allegra-M Tablet is prescribed by the doctor to maintain or prevent asthma.
  • To treat Allergic rhinitis: The medicine Allegra-M is prescribed by the doctor to the patients who are suffering from Allergic rhinitis.
  • To treat breathing problem: Allegra-M Tablet helps to prevent the unexpected narrow of airways and also helps to get relief from breathing problems. One of the most common uses of medicine is for bronchospasm.

How Allegra-M works?

The constituents of the Allegra-M Tablet reduce the swelling in the airways, thereby making the process of breathing easier. It prevents the release of natural chemical- histamine in the body which is responsible for sneezing, watery eyes, cough etc.

Warnings/Precautions- When to avoid Allegra-M Tablet?

Patients need to be very vigilant and aware about taking any medicine. There are certain medical conditions in which the Allegra-M tablet needs to be taken with caution. The conditions which need to be discussed before taking the Allegra-M Tablet are:

There are certain other precautions for Allegra-M Tablet, those are:

  • If a patient is allergic to any ingredient of the Allegra-M Tablet
  • If a patient is taking any vitamin supplement, medicine, herbal preparations etc
  • If a patient is intolerant to the lactose
  • If there is some mental problem like depression, thought of suicide etc.
  • If a patient has liver problem
  • If a patient is addict to alcohol or have a history of alcoholism
  • If a patient taking any corticosteroid
  • If a patient is suffering from phenylketonuria
  • It should not be taken by the children who are below the age of 6 years.
  • It should not be taken with any fruit juice.
  • Patient should avoid taking medicines before or after eating antacid for at least 30 minutes.
  • Patient above the age of 60 should discuss with the doctor about the side effects with the doctor to avoid serious health problems
  • One should not allow children to take the medicine
  • It is advisable to consult the doctor if in case a patient is suffering from renal impairment, heart disease, and kidney or liver problems.
  • Patient should not take the medicine with fruit juice
  • It is not recommended to the patient suffering from asthma
  • It is advisable to women to consult the doctor if they are breastfeeding, planning a pregnancy or pregnant.

Substitutes for Allegra-M:

There are many substitutes of Allegra-M available in the market. A few of them are listed here:

  • Histafree-M manufactured by the (Mankind Pharma)
  • Montair FX manufactured by the (Cipla)
  • Odimont manufactured by the (Zydus Cadila)
  • Monti FX manufactured by the (Abbott)
  • Glenmont-F manufactured by the (Glenmark Pharmaceuticals)
  • Xaria Plus manufactured by the (Glenmark)
  • Emlukast FX manufactured by the (Dr. Reddy’s Ltd.)
  • Telekast F manufactured by the (Lupin Ltd.)

Allegra-M Interactions:

Medicines usually interact with other drugs which can cause severe health issues. So, it is advisable to discuss about the current medicine and also medical history with the doctor. Patients should also not start, stop or change drugs without the approval of the doctor.

Allegra-M Tablet interacts moderately with alcohol. It is not recommended to the patients having an impaired liver. The major medicines with which Allegra-M Tablet interacts are:

  • Ketoconazole
  • Erythromycin
  • Carbamazepine
  • Phenobarbital
  • Phenytoin
  • Flucanozole
  • Magnesium Hydroxide
  • Aluminum
  • Gemfibrozil
  • Rifampin

Medicines that should not be taken with Allegra-M Tablet:

Here is the list of medicines that a patient should not take with Allegra-M Tablet:

  • Ketoconazole
  • Erythromycin
  • Carbamazepine
  • Phenobarbital
  • Phenytoin
  • Flucanozole
  • Magnesium Hydroxide
  • Aluminum
  • Gemfibrozil
  • Rifampin

Allegra-M Tablet Packages and Strengths:

Allegra-M Tablet is readily available in the medical stores in these packages and strengths.

  • Allegra-M Tablet - Packages: 10 Tablet
  • Allegra-M Tablet - Strengths: 10MG+120MG


1) How long does the effect of the Allegra-M last?

Ans: The effect of the Allegra-M Tablet remains for about 24 hours.

2) How long does it take for Allegra-M to show effect?

Ans: The Allegra-M Tablet starts to work in 1 to 3 hours post administration.

3) Is the nature of Allegra-M addictive?

Ans: No, the nature of the Allegra-M Tablet has not been established as addictive by any experiment or test.

4) When is Allegra-M Tablet usually taken?

Ans: Doctors usually recommend Allegra-M Tablet to be taken just after the intake of food.

5) Can the intake of Allegra-M stopped suddenly?

Ans: No, the use of the Allegra-M Tablet is not recommended to be stopped suddenly. You must consult your doctor first before stopping its consumption.

6) Is it safe to take Allegra-M for the women who are breastfeeding?

Ans: No, the patient should not take the Allegra-M if they are breastfeeding because the drug might interact with the milk and cause severe health issues which are harmful to the baby.

7) How to store the Allegra-M Tablet?

Ans: The Allegra-M should be stored at the room temperature. Avoid direct sunlight or heat. Don’t freeze the medicines if not advised on the package. Keep the medicine away from children and pets.

8) What happens if a patient takes expired medicine?

Ans: Taking a single dose of Allegra-M tablet won’t have serious side effects on the body. However, the patient should stop the medication right away. The patient should check the expiry date while purchasing the tablet to avoid such things. If in case, any major side effect or allergy is noticed then consult the doctor as soon as possible.

9) Can Allegra-M be used for allergic skin conditions and allergic rhinitis?

Ans: Yes, the Allegra-M can be used to treat skin conditions as it is one of the most common uses of the medicine. However, never use the medicine without the proper consultation of the doctor as it might lead to severe health problems.

10) Should I use Allegra-M Tablet empty stomach, before food or after food?

Ans: The dosage of the Allegra-M Tablet advised by the doctor or pharmacist is after the food. However, it is advisable to use the medicine as per the doctor’s prescription because at times the schedule changes as per the medical history and current medication of the patient.

11) What is Allegra-M used for?

Ans: The Allegra-M is used to treat health conditions like seasonal allergic rhinitis, skin allergies,, hay fever, asthma caused due to exercise, chronic asthma.

12) Can I drink alcohol after taking Allegra-M?

Ans: No, the patient should not drink alcohol as it intensifies dizziness and drowsiness effect on the body. It is better to discuss these things with the doctor as the health condition might get worse if a patient consumes alcohol.

13) Is Allegra-M Tablet habit-forming or addictive?

Ans: No, Allegra-M Tablet is not addictive or habit forming as most of the medicines prescribed to the patient doesn’t have the potential for abuse or addiction. If in case there are any medicines that are addictive, the government classifies those medicines as controlled substances. In India, such medicines are categorized in the H or X category. However, it is advisable to consult the doctor and make sure that the drug is addictive or habit forming. And also take the medicine as per the prescription by the doctor.

14) What are the side effects of Allegra-M?

Ans: A patient who has used Allegra-M Tablet have experienced side effects like a sore Throat, constipation, stuffy nose, stomach ache/inflammation, hypersensitivity, restlessness, stuffy nose, dizziness, skin swellings, headache, cough, gastrointestinal disturbances, chest tightness, church-Strauss syndrome, and influenza.

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Last updated on : 26-09-2019

Disclaimer : Docprime doesn’t endorse or take any guarantee of the accuracy or completeness of information provided under this article and these are the views strictly of the writer. Docprime shall not be held responsible for any aspect of healthcare services administered with the information provided on this article.

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