Tablets
Krujokast-B Tablet
Bilastine 20 mg and montelukast 10 mg tablets
Krujokast-B is a registered product of Ramnova Healthcare Private Limited.
Krujokast-B Tablet composition
Each film-coated tablet contains
| Ingredient | Strength |
|---|---|
| Bilastine | 20 mg |
| Montelukastas montelukast sodium | 10 mg |
About Krujokast-B Tablet
KRUJOKAST-B tablets combine bilastine 20 mg, a non-drowsy antihistamine, with montelukast 10 mg, a leukotriene receptor antagonist. It is used to relieve allergic rhinitis and hay fever (sneezing, runny or blocked nose, itchy and watery eyes) and hives, and to help control asthma, particularly when allergies and asthma occur together.
Take one tablet once a day on an empty stomach, at least 1 hour before or 2 hours after food or fruit juice, exactly as your doctor prescribes. It is for adults and adolescents aged 15 and over. Montelukast can occasionally cause mood or behaviour changes, so tell your doctor straight away if you notice any.
Therapy category: Allergy and asthma medicine.
Uses of Krujokast-B Tablet
- Asthma
- Seasonal and perennial allergic rhinoconjunctivitis
- Hay fever
- Respiratory and nasal allergies
- Urticaria
Benefits of Krujokast-B Tablet
Allergic rhinitis and hay fever
During an allergic reaction the body releases histamine and leukotrienes, which cause sneezing, a runny or blocked nose and itchy, watery eyes. Bilastine blocks histamine to relieve sneezing, itching and a runny nose, while montelukast blocks leukotrienes, which can help with nasal congestion, especially in people who also have asthma.
Asthma
Leukotrienes narrow and inflame the airways. Montelukast blocks them, helping to prevent asthma symptoms, including those triggered by exercise or allergies. It is a preventer and does not relieve a sudden attack.
Urticaria (hives)
Bilastine reduces the itching and raised red wheals of hives by blocking histamine, the main chemical behind them.
Side effects of Krujokast-B Tablet
Most side effects are mild and settle as your body adjusts. Tell your doctor if they continue or worry you.
- Headache
- Drowsiness, dizziness or tiredness
- Abdominal pain, diarrhoea or nausea
- Upper respiratory infection or fever
- Rash
- Rarely, mood changes, disturbed sleep or vivid dreams
How to take Krujokast-B Tablet
Take one tablet once a day, or as your doctor advises, at the same time each day. Take it on an empty stomach, at least 1 hour before or 2 hours after eating or drinking fruit juice, as food reduces how much bilastine is absorbed. Swallow it whole with water.
How Krujokast-B Tablet works
During an allergic reaction, the body releases chemicals including histamine and leukotrienes. Bilastine is a long-acting antihistamine that blocks histamine H1 receptors, relieving sneezing, itching and hives without usually causing drowsiness. Montelukast blocks leukotriene receptors in the airways and nose, reducing swelling, mucus and narrowing of the airways.
Safety advice for Krujokast-B Tablet
- Use with caution
Alcohol
Bilastine does not usually interact with alcohol, but alcohol can add to drowsiness and trigger asthma in some people. Limit it.
- Consult your doctor
Pregnancy
Best avoided during pregnancy unless your doctor considers it clearly needed.
- Consult your doctor
Breastfeeding
Use only if your doctor considers it clearly needed.
- Use with caution
Driving
It does not usually affect driving, but some people feel drowsy or dizzy. Do not drive if you are affected.
- Use with caution
Kidney
Tell your doctor if you have kidney disease, especially if you also take medicines such as ketoconazole, erythromycin or diltiazem.
- Consult your doctor
Liver
Tell your doctor if you have liver disease.
Quick tips
- Take it at the same time each day on an empty stomach, away from food and fruit juice.
- It prevents and controls symptoms but does not cure allergies, so keep taking it as advised.
- Keep your reliever inhaler with you. This tablet does not treat a sudden asthma attack.
- Tell your doctor straight away about any change in mood, sleep or behaviour, including anxiety, depression or thoughts of self-harm.
- Your doctor may ask you to stop it a few days before an allergy skin test, because antihistamines can affect the result.
- Reduce exposure to triggers such as dust, pollen and pet hair.
Warnings and interactions
Safety details must be checked against the current pack insert and advice from a qualified healthcare professional.
Warnings
- Montelukast can cause mood and behaviour changes, such as agitation, sleep problems, depression and suicidal thoughts, in people of all ages. Stop taking it and contact your doctor if these occur.
- It does not relieve a sudden asthma attack, and it must not replace inhaled or oral steroid treatment unless your doctor advises.
- Rarely, people taking montelukast have developed inflammation of the blood vessels, with rash, tingling, worsening breathing or sinus pain. Tell your doctor if you notice these.
- Bilastine should be used with caution in people with heart rhythm problems or low potassium or magnesium.
- It is not suitable for children under 15 years.
Contraindications
- Allergy to bilastine, montelukast or any other ingredient
Important interactions
- Food and grapefruit or other fruit juices reduce the absorption of bilastine.
- Ketoconazole, erythromycin, ciclosporin, ritonavir and diltiazem increase bilastine levels; avoid them if you also have moderate or severe kidney disease.
- Phenobarbital, phenytoin and rifampicin can reduce the effect of montelukast.
- Gemfibrozil increases montelukast levels.
- Use caution with other medicines that affect heart rhythm.
Frequently asked questions about Krujokast-B Tablet
- Krujokast-B Tablet is used for: asthma; seasonal and perennial allergic rhinoconjunctivitis; hay fever; respiratory and nasal allergies; and urticaria.
- Common side effects of Krujokast-B Tablet include: headache; drowsiness, dizziness or tiredness; abdominal pain, diarrhoea or nausea; upper respiratory infection or fever; rash; and rarely, mood changes, disturbed sleep or vivid dreams. Tell your doctor if they continue or worry you.
- Take one tablet once a day, or as your doctor advises, at the same time each day. Take it on an empty stomach, at least 1 hour before or 2 hours after eating or drinking fruit juice, as food reduces how much bilastine is absorbed. Swallow it whole with water.
- Do not take Krujokast-B Tablet in the following cases: allergy to bilastine, montelukast or any other ingredient.
- Bilastine does not usually interact with alcohol, but alcohol can add to drowsiness and trigger asthma in some people. Limit it.
- Best avoided during pregnancy unless your doctor considers it clearly needed.
- It does not usually affect driving, but some people feel drowsy or dizzy. Do not drive if you are affected.
- Krujokast-B is a registered product of Ramnova Healthcare Private Limited, Silvassa, India, and is marketed by Ramnova Healthcare.
- Krujokast-B Tablet contains bilastine 20 mg and montelukast 10 mg (as montelukast sodium) in each film-coated tablet.
What is Krujokast-B Tablet used for?
What are the side effects of Krujokast-B Tablet?
How should I take Krujokast-B Tablet?
Who should not take Krujokast-B Tablet?
Can I drink alcohol with Krujokast-B Tablet?
Is Krujokast-B Tablet safe in pregnancy?
Can I drive after taking Krujokast-B Tablet?
Who markets Krujokast-B Tablet?
What is the composition of Krujokast-B Tablet?
More information
Marketed by Ramnova Healthcare Private Limited, Silvassa, India.
For dosage, pack sizes or prescribing information, refer to the current pack insert or contact Ramnova Healthcare. Catalogue information updated 2026-10-01.
- electronic medicines compendium (emc): Bilastine 20 mg tablets: Summary of Product Characteristics (United Kingdom, accessed 2026-10-01)
- electronic medicines compendium (emc): Montelukast 10 mg film-coated tablets: Summary of Product Characteristics (United Kingdom, accessed 2026-10-01)
