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  1. Home
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  3. Instalast Tablet 10's

Instalast Tablet 10's, Pack of 10 TABLETS
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Composition :

LEVOCETIRIZINE-5MG + MONTELUKAST-10MG

Manufacturer/Marketer :

Aglowmed Pharmaceuticals Ltd

Consume Type :

ORAL

Return Policy :

Not Returnable

Expires on or after :

About Instalast Tablet 10's

Instalast Tablet 10's is used to relieve and/or prevent symptoms of allergic rhinitis (seasonal and perennial). It is also used to treat rhinitis associated with asthma and urticaria. An allergy is an immune system response to foreign elements, typically not harmful to your body.

Instalast Tablet 10's contains Montelukast and Levocetirizine. Montelukast blocks a chemical messenger called leukotriene, helping to reduce inflammation and swelling in the nose. Levocetirizine works by blocking the action of histamine, a substance responsible for allergic symptoms. Together, Instalast Tablet 10's provides relief from allergic conditions.

Sometimes, Instalast Tablet 10's may cause side effects like abdominal pain, skin rash, sleepiness, headache, and fatigue. Most of these side effects of Instalast Tablet 10's are temporary, do not require medical attention, and gradually resolve over time. However, if the side effects are persistent, reach out to your doctor.

Do not take Instalast Tablet 10's if you are allergic to any of its components. Check with your doctor if you are pregnant, breastfeeding, or taking other prescribed or non-prescribed medicines. Keep your doctor informed if you have any pre-existing medical conditions.

Directions for Use

  • Take Instalast Tablet 10's with or without food as advised by your doctor.
  • It is advised to take Instalast Tablet 10's once daily; however, follow your doctor’s recommendation regarding the dosage and duration.
  • Swallow Instalast Tablet 10's as a whole with a glass of water.
  • Do not crush, chew or break it.

Medicinal Benefits

  • Instalast Tablet 10's effectively treats symptoms such as sneezing, runny or blocked nose, and watery eyes caused by seasonal allergy (hay fever) or perennial allergy (year-round allergies).
  • It reduces nasal inflammation and improves breathing in individuals with both allergic rhinitis and asthma.
  • Helps reduce symptoms triggered by allergens like pollen, dust, or pet dander.
  • Alleviates symptoms of chronic hives (urticaria), including itching, redness, and swelling.
  • Reduces the likelihood of allergy triggers by blocking the action of chemical messengers such as leukotriene and histamine.

How Instalast Tablet 10's Works

Instalast Tablet 10's contains Montelukast and Levocetirizine. Montelukast blocks a chemical messenger called leukotriene, helping to reduce inflammation and swelling in the nose. Levocetirizine works by blocking the action of histamine, a substance responsible for allergic symptoms. Together, Instalast Tablet 10's provides relief from allergic conditions.

Storage

Store in a cool and dry place away from sunlight

What if I have taken an overdose of Instalast Tablet 10's

Do not take more than the prescribed dose of Instalast Tablet 10's as it may cause overdose symptoms like headache, dizziness, fatigue, dry mouth, and nausea. If you suspect you have taken an overdose, please consult a doctor immediately.

Drug Warnings

  • Do not take Instalast Tablet 10's if you are allergic to any of its components or if you have severe impairment of kidney function.
  • Inform your doctor if you have liver or kidney problems, asthma, or epilepsy.
  • Consult your doctor if you are pregnant or breastfeeding before taking Instalast Tablet 10's.
  • Instalast Tablet 10's may cause dizziness and sleepiness. Hence, drive only if you are alert after taking this medicine.
  • Avoid alcohol consumption as it may lead to increased dizziness.
  • Keep your doctor informed about your medical conditions and medications to prevent any possible interactions.

Drug-Drug Interactions

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MontelukastMiconazole
Severe
MontelukastPrimidone
Severe

Drug-Drug Interactions

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MontelukastMiconazole
Severe
How does the drug interact with Instalast Tablet:
Coadministration of Miconazole with Instalast Tablet may increase the blood levels and effects of Instalast Tablet. This increases the risk or severity of side effects.

How to manage the interaction:
Although there is a possible interaction between miconazole and Instalast Tablet, you can take these medicines together if prescribed by your doctor. However, if you experience any symptoms such as fever, sore throat, cough, stomach pain, diarrhea, earache, runny nose, or uncommon, depression, confusion, difficulty concentrating, anxiety, hallucinations, irritability. memory impairment, restlessness, sleep walking, Consult a doctor immediately. Do not stop using medications without a doctor's advice.
MontelukastPrimidone
Severe
How does the drug interact with Instalast Tablet:
Coadministration of Instalast Tablet and primidone can reduce the levels and effects of Instalast Tablet.

How to manage the interaction:
Taking Instalast Tablet and Primidone together can possibly result in an interaction, it can be taken if prescribed by a doctor. However, if you experience any unusual symptoms, contact a doctor immediately. Do not discontinue any medications without consulting a doctor.
MontelukastPhenytoin
Severe
How does the drug interact with Instalast Tablet:
Coadministration of Instalast Tablet and Phenytoin may reduce the blood levels and effects of Instalast Tablet. This can lead to low treatment outcomes.

How to manage the interaction:
Taking Instalast Tablet and Phenytoin may interact with one another, but they can be taken together if your doctor has prescribed them. However, if you experience signs such as headache, fever, sore throat, cough, abdominal pain, diarrhoea, earache, runny nose, or behaviour and mood changes, consult a doctor immediately. Do not discontinue any medications without consulting a doctor.
MontelukastRifapentine
Severe
How does the drug interact with Instalast Tablet:
Coadministration of Rifapentine with Instalast Tablet may reduce the blood levels and effects of Instalast Tablet. This can lead to low treatment outcomes.

How to manage the interaction:
Taking Rifapentine with Instalast Tablet together can possibly result in an interaction, it can be taken if your doctor has advised it. If you experience increased side effects such as headache, fever, sore throat, cough, abdominal pain, diarrhea, earaches, runny nose, or behavior and mood changes consult a doctor. Do not discontinue any medications without consulting a doctor.
MontelukastRifabutin
Severe
How does the drug interact with Instalast Tablet:
Coadministration of Instalast Tablet and rifabutin can reduce the levels and effects of Rifabutin. This can lead to low treatment outcomes.

How to manage the interaction:
Taking Instalast Tablet and rifabutin together can possibly result in an interaction, it can be taken if your doctor has advised it. However, if you experience increased side effects such as headache, fever, sore throat, cough, abdominal pain, diarrhea, earache, runny nose, or behavior and mood changes consult a doctor. Do not discontinue any medications without consulting a doctor.
LevocetirizineEsketamine
Severe
How does the drug interact with Instalast Tablet:
Using esketamine together with Instalast Tablet may increase side effects (drowsiness, confusion, difficulty concentrating, and impairment in thinking, judgment, reaction speed, and motor coordination).

How to manage the interaction:
Taking Instalast Tablet with Esketamine together can result in an interaction, but it can be taken if a doctor has advised it. Do not discontinue any medications without consulting a doctor.

Drug-Food Interactions

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No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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Diet & Lifestyle Advise

  • Some anti-inflammatory compounds in ginger can relax membranes in the airways, reducing coughing.
  • The immune system is affected by stress, which raises the risk of illness. An individual can exercise regularly, meditate, practice deep breathing, and employ progressive muscle relaxation techniques to alleviate stress.
  • Try to get 7-9 hours of sleep each night to stay fit and healthy.
  • It is advised to avoid contact with known allergens (allergy-causing agents) such as pollen, dust, etc.
  • Maintain personal hygiene and keep your surroundings clean.

Habit Forming

No

Therapeutic Class

ANTIALLERGIC

Instalast Tablet 10's Substitute

Substitutes safety advice

Product Substitutes

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Alcohol

Unsafe

It is not advised to consume alcohol while taking Instalast Tablet 10's as it leads to excessive drowsiness.

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Pregnancy

Caution

Please consult the doctor. There are no adequate and well-controlled studies on pregnant women. Your doctor will prescribe only if the benefits outweigh the risks.

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Breast Feeding

Caution

It is not known if Instalast Tablet 10's passes into breastmilk. Consult your doctor if you are breastfeeding.

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Driving

Caution

Instalast Tablet 10's should be used with caution while driving as it may interfere with driving capabilities. You may feel drowsy or sleepy after taking Instalast Tablet 10's.

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Liver

Caution

If you have a history of liver diseases or conditions, inform your doctor. Your doctor will prescribe only if the benefits outweigh the risks.

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Kidney

Caution

Instalast Tablet 10's is not recommended in patients with severe renal impairment. Inform your doctor if you have a history of kidney diseases/conditions.

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Children

Caution

Instalast Tablet 10's is not recommended for children below two years without the doctor's consent. However, consult your paediatrician before giving Instalast Tablet 10's to your child.

Have a query?

FAQs

Instalast Tablet 10's is used to relieve and/or prevent symptoms of allergic rhinitis (seasonal and perennial). It is also used to treat rhinitis associated with asthma and urticaria.

Instalast Tablet 10's is a combination medicine containing levocetirizine (antihistamine) and montelukast (leukotriene antagonist). Montelukast works by blocking a chemical messenger (leukotriene) and reduces inflammation and swelling in the nose. Levocetirizine works by blocking the effects of a chemical messenger called histamine (responsible for allergic reactions).

Instalast Tablet 10's is a non-sedative antihistamine providing instant relief from allergic conditions; however, in some people, it may cause sleepiness and induce drowsiness.

No, Instalast Tablet 10's will not help in reducing general fever. Instalast Tablet 10's is an antiallergic and primarily helps reduce allergic reactions, including seasonal allergies known as hay fever.

No, Instalast Tablet 10's is not used to treat an asthma attack. It is used to treat allergic conditions. Talk to the doctor if you have any concerns.

Instalast Tablet 10's should be used during pregnancy only if prescribed by the doctor. Please consult the doctor if you are pregnant, planning for pregnancy or think you may be pregnant.

Do not discontinue Instalast Tablet 10's without consulting your doctor. To treat your condition effectively, keep taking Instalast Tablet 10's for the prescribed duration.

Take Instalast Tablet 10's as advised by the doctor. Take Instalast Tablet 10's at a fixed time each day, as this will help you remember to take the medicine.

Instalast Tablet 10's is a combination medicine containing Levocetirizine and Montelukast. It treats sneezing, runny nose, and allergic skin conditions due to various allergies and hay fever (seasonal allergy).

Dry mouth could be a side-effect of Instalast Tablet 10's. Limiting caffeine intake, avoiding smoking and mouthwashes containing alcohol, drinking water regularly, and chewing sugar-free gum/candy might help in stimulating saliva and thereby prevent drying of the mouth.

It is not advised to consume alcohol while taking Instalast Tablet 10's as it leads to excessive drowsiness.

No, taking Instalast Tablet 10's in higher doses will not be effective but might lead to an overdose. Therefore, avoid exceeding the recommended dosage.

Store Instalast Tablet 10's at room temperature, in a dry place. Keep out of sight and reach of children.

Instalast Tablet 10's can be taken if you have liver or kidney problems, if prescribed by the doctor. Consult the doctor if you have any concerns.

Instalast Tablet 10's may cause side effects like abdominal pain, skin rash, sleepiness, headache, and fatigue. Most of these side effects of Instalast Tablet 10's are temporary, do not require medical attention, and gradually resolve over time. However, if the side effects are persistent, reach out to your doctor.

It is advised to consult a doctor before taking other medicines with Instalast Tablet 10's to prevent any interactions.

Do not take more than the prescribed dose of Instalast Tablet 10's as it may cause an overdose. Seek immediate medical attention if you have overdosed on Instalast Tablet 10's.

Country of origin

India

Manufacturer/Marketer address

51, Raipur, Po Bhagwanpur, Roorkee, District Haridwar, Uttrakhand
Other Info - INS0463

Disclaimer

While we strive to provide complete, accurate, and expert-reviewed content on our 'Platform', we make no warranties or representations and disclaim all responsibility and liability for the completeness, accuracy, or reliability of the aforementioned content. The content on our platform is for informative purposes only, and may not cover all clinical/non-clinical aspects. Reliance on any information and subsequent action or inaction is solely at the user's risk, and we do not assume any responsibility for the same. The content on the Platform should not be considered or used as a substitute for professional and qualified medical advice. Please consult your doctor for any query pertaining to medicines, tests and/or diseases, as we support, and do not replace the doctor-patient relationship.

Author Details

Bayyarapu Mahesh KumarDoctor badge

Written By

Bayyarapu Mahesh Kumar

M Pharmacy

Dr Aneela SiddabathuniDoctor badge

Reviewed By

Dr Aneela Siddabathuni

MPharma., PhD

Last Updated

Jul 16, 2025 | 6:50 AM IST

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Reference

  1. https://www.drugs.com/tips/montelukast-patient-tips
  2. https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020829s051_020830s052_021409s028lbl.pdf
  3. https://www.accessdata.fda.gov/drugsatfda_docs/label/2008/022064s009lbl.pdf
  4. https://www.drugs.com/pro/levocetirizine.html

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