Ibrex 180mg Tablet

Reviewed By Dr. Rajeev Sharma, MBA, MBBS

Last updated on 07 Apr 2026 | 11:10 AM (IST)

Ibrex 180mg Tablet is an anti-allergy medicine used in the treatment of chronic idiopathic urticaria, a condition that causes red, itchy skin welts that last more than six weeks. It works by blocking the effects of histamine that is responsible for allergy symptoms.

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Altiva 180mg Tablet

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Fexofenadine (180mg)

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General Information

Contains

Fexofenadine (180mg)

Marketer

Cadila Pharmaceuticals Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Take Ibrex 180mg Tablet in the dose and duration prescribed, preferably before a meal. The dose you are given may depend on the severity of your condition and how you respond to the medicine. Keep taking this medicine for as long as your doctor recommends. Do not stop taking it without consulting your doctor.

The most common side effects are headache, drowsiness, dizziness, and nausea. Most of these are temporary and usually resolve with time. Consult your doctor if any of these side effects do not resolve or persist for a longer duration.

Do not self-medicate or recommend your medicine to another person, even if you see a similarity in symptoms. Inform your doctor if you are suffering from any problems related to the kidneys, liver, or heart. Pregnant and breastfeeding mothers should not take this medicine without consulting a doctor.

Uses of Ibrex Tablet

Allergic conditions
Treatment of Sneezing and runny nose due to allergies

Benefits of Ibrex Tablet

Treatment of Sneezing and runny nose due to allergies
Ibrex 180mg Tablet provides relief from symptoms such as sneezing, itching, watery eyes, and runny nose. This will make it easier for you to go about your daily activities. It rarely has any serious side effects and you may only need to take it on days you have symptoms. If you are taking it to prevent getting symptoms you should use it regularly to get the most benefit.

Side effects of Ibrex Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Ibrex

Headache
Dizziness
Nausea
Drowsiness

How to use Ibrex Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Ibrex 180mg Tablet may be taken with or without food.

How Ibrex Tablet works

Ibrex 180mg Tablet belongs to a class of medicines called antihistamines. It blocks the effects of natural chemical substance (histamine) produced in the body during an allergic state and subsides (lowers) your immune system’s response to these conditions.

All substitutes for Ibrex 180mg Tablet

For information purposes only. Consult a doctor before taking any medicine.

Quick tips

Avoid drinking fruit juices (such as apple or orange juice), as they may affect the absorption of this medicine and reduce its effectiveness.
Avoid using antacids 30 minutes before or after taking this medicine, as they can make it harder for your body to absorb the medicine.
Never give this medicine to someone who appears to have a similar illness. It should be taken only if prescribed by a doctor.
Do not drink alcohol while taking this medication, as it may increase the risk of sleepiness.
Stop taking Ibrex 180mg Tablet at least 3 days before undergoing an allergy test, as it can affect the test results.
If you notice a rapid heartbeat, irregular pulse, or a sensation of palpitations, stop taking the medication and contact your doctor immediately. These symptoms may indicate a cardiovascular side effect that requires medical attention.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Ibrex 180mg Tablet. Please consult your doctor.

Pregnancy

CONSULT YOUR DOCTOR

The safety of Ibrex 180mg Tablet during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.

Breast feeding

CAUTION

Ibrex 180mg Tablet should be used with caution during breastfeeding. Breastfeeding should be held until the treatment of the mother is completed and the drug is eliminated from the body.
Because of low milk levels and lack of sleepiness, use of Ibrex 180mg Tablet would not be expected to cause any adverse effects in breastfed babies.

Driving

SAFE

Ibrex 180mg Tablet does not usually affect your ability to drive.
However, you should make check that Ibrex 180mg Tablet does not make you feel sleepy or dizzy before driving or operating machinery.

Kidney

CAUTION

Ibrex 180mg Tablet should be used with caution in patients with kidney disease. Dose adjustment may be needed.

Liver

SAFE IF PRESCRIBED

Ibrex 180mg Tablet is probably safe to use in patients with liver disease. Limited data suggest dose adjustment may not be needed.
However, consult your doctor before giving Ibrex 180mg Tablet to your child in case of severe liver disease.

Interaction with drugs

Taking Ibrex with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Severe

Tepotinib (Oral Route)

Do not consume Tepotinib with Fexofenadine. If concurrent use is essential, please consult your doctor. Tepotinib may raise blood levels of Fexofenadine.

Moderate

Leflunomide (Oral Route)

Watch out for symptoms of Fexofenadine side effects such as headaches, excessive sleepiness, dry mouth, feeling sick or dizziness and consult your doctor if you experience them. They may adjust the doses as per the observations. Leflunomide may raise blood levels of Fexofenadine.

Moderate

Ulipristal acetate (Oral Route)

Ensure a gap of at least 2 hours between taking Ulipristal acetate and Fexofenadine.

Moderate

Thalidomide (Oral Route)

If concurrent use is essential, watch out for symptoms of Thalidomide side effects such as drowsiness, excessive sedation, tiredness, dizziness or slurred speech and consult your doctor if you experience them. It is advised to avoid driving or undertaking other tasks requiring skill and alertness.

Moderate

Dronedarone (Oral Route)

Watch out for symptoms of Fexofenadine side effects such as headaches, excessive sleepiness, dry mouth, feeling sick or dizziness and consult your doctor if you experience them. They may adjust the doses as per the observations. Dronedarone may raise blood levels of Fexofenadine.

Frequently asked questions

What is Ibrex 180mg Tablet and what is it used for?

Ibrex 180mg Tablet is an anti-allergic medicine that contains fexofenadine (a second-generation antihistamine). It helps reduce symptoms of chronic idiopathic urticaria, such as persistent, itchy red or skin-colored raised welts (hives). It works by blocking histamine (a chemical released during allergic reactions).

What should I tell my doctor before starting treatment with Ibrex 180mg Tablet?

It is important to inform your doctor about any existing medical conditions and medications. This includes kidney disease, as dose adjustments may sometimes be needed while taking Ibrex 180mg Tablet. Also mention if you are pregnant, planning a pregnancy, or breastfeeding. Providing a complete list of prescription or non-prescription medicines to your doctor helps identify potential interactions.

What if I forget to take a dose of Ibrex 180mg Tablet?

If you miss a dose, take it when you remember. However, if it is nearly time for the next scheduled dose, skip the missed dose. Do not take two doses at the same time. Since Ibrex 180mg Tablet is usually taken once daily, maintaining a consistent schedule helps ensure symptom control.

Who should not take Ibrex 180mg Tablet?

People who are allergic to Ibrex 180mg Tablet should not take it. In individuals with kidney impairment, reduced clearance of the drug can occur, and dose adjustment may be considered depending on the severity of the condition.

Does Ibrex 180mg Tablet interact with other medicines or food?

Yes, Ibrex 180mg Tablet may interact with other medicines such as antacids, erythromycin, and ketoconazole. It is always better to consult your doctor and provide a list of all prescription and non-prescription medicines before taking Ibrex 180mg Tablet. It is generally recommended to avoid fruit juices (such as grapefruit, orange, or apple juice) around the time of taking the dose, as these may reduce absorption.

Can I stop taking Ibrex 180mg Tablet if I feel better?

Take Ibrex 180mg Tablet exactly as directed to help manage your allergy symptoms. This medicine relieves the signs of an allergic reaction but does not treat the underlying cause; therefore, you can stop it when your symptoms have improved. If your symptoms recur after stopping the medicine or persist despite treatment, contact your doctor for further evaluation.

Is Ibrex 180mg Tablet an antibiotic?

No. It is not an antibiotic; it is an antihistamine. Antibiotics treat bacterial infections, whereas antihistamines like Ibrex 180mg Tablet relieve allergy symptoms by blocking the effects of histamine in the body.

What are the side effects of Ibrex 180mg Tablet, and can it cause dizziness or heart palpitations?

Ibrex 180mg Tablet is generally well tolerated. Common side effects may include headache, back pain, dizziness, and stomach discomfort. These are usually mild and temporary. Heart palpitations are uncommon but have been reported rarely. If unusual symptoms such as severe dizziness or irregular heartbeat occur, seek medical help immediately.

Is Ibrex 180mg Tablet truly non-drowsy compared to cetirizine?

Ibrex 180mg Tablet is classified as a non-sedating (non-drowsy) antihistamine because it has very limited ability to cross into the brain. It causes less sedation and may cause less drowsiness than cetirizine in some individuals. However, individual responses vary, and mild drowsiness can still occur in some people.

What is the best time of day to take Ibrex 180mg Tablet?

Ibrex 180mg Tablet is usually taken once daily. It can be taken at any time of day, but taking it at the same time each day helps maintain consistent symptom control. Some people prefer taking it in the morning for daytime allergy symptoms.

Fact Box

Chemical Class

Diphenylmethanes

Habit Forming

Therapeutic Class

RESPIRATORY

Action Class

Second-Generation H1 Antihistamines

Related lab tests

Absolute Eosinophil Count

Peripheral Smear Examination

Total IgE

References

RA Skidgel. Histamine, Bradykinin, and Their Antagonists. In: Brunton LL, Hilal-Dandan R, Knollmann BC (Editors). Goodman & Gilman's: The Pharmacological Basis of Therapeutics. 13th ed. New York, New York: McGraw-Hill Medical; 2018. p. 718.
Golisano Children's Hospital. Treatment for a Child's Allergy to Pollen or Animals. [Accessed 22 Jan. 2021] (online) Available from:
Fexofenadine Hydrochloride [Prescribing Information]. East Windsor, NJ: Aurohealth LLC; 2023. [Accessed 22 Jan. 2021] (online) Available from:
Children's Allergy: Fexofenadine [Drug Facts]. Montgomery, AL: H2-Pharma, LLC; 2025.

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Cadila Pharmaceuticals Ltd
Address: Sarkhej-Dholka Road, Bhat, Ahmedabad-382 210, INDIA.

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Ibrex 180mg Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Ibrex Tablet

Benefits of Ibrex Tablet

Side effects of Ibrex Tablet

How to use Ibrex Tablet

How Ibrex Tablet works

All substitutes for Ibrex 180mg Tablet

Altiva 180mg Tablet

Allegra 180mg Tablet

Histafree 180 Tablet

Hhfexo 180 Tablet

Fexy 180 Tablet

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Tepotinib (Oral Route)

Leflunomide (Oral Route)

Ulipristal acetate (Oral Route)

Thalidomide (Oral Route)

Dronedarone (Oral Route)

Frequently asked questions

What is Ibrex 180mg Tablet and what is it used for?

What should I tell my doctor before starting treatment with Ibrex 180mg Tablet?

What if I forget to take a dose of Ibrex 180mg Tablet?

Who should not take Ibrex 180mg Tablet?

Does Ibrex 180mg Tablet interact with other medicines or food?

Can I stop taking Ibrex 180mg Tablet if I feel better?

Is Ibrex 180mg Tablet an antibiotic?

What are the side effects of Ibrex 180mg Tablet, and can it cause dizziness or heart palpitations?

Is Ibrex 180mg Tablet truly non-drowsy compared to cetirizine?

What is the best time of day to take Ibrex 180mg Tablet?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Absolute Eosinophil Count

Peripheral Smear Examination

Total IgE

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

Related/Popular tests