
Acnesol A Nanogel
Systopic Lab - 15 G
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Bilastine (20mg) + Montelukast (10mg)
Delivery across India. Free above ₹999; ₹49 from ₹499, ₹99 below. Chennai express delivery is chargeable.
This medicine needs a prescription.
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B-Sys M Tablet is used for treatment of Allergic conditions Treatment of Allergic rhinitis.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
B-Sys M Tablet contains Bilastine (20mg) + Montelukast (10mg). It belongs to the Herbal supplement class of medicines.
Treatment of Allergic conditions Treatment of Allergic rhinitis
B-Sys M Tablet is a combination of two medicines: bilastine and montelukast. Bilastine is an antiallergic medication. It treats allergy symptoms such as itching, swelling, and rashes by blocking the effects of a chemical messenger (histamine) in the body. Montelukast works by blocking the action of leukotriene, a chemical messenger. This reduces inflammation in the airways to relieve symptoms of allergies.
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. B-Sys M Tablet is to be taken on an empty stomach.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
If you miss a dose of B-Sys M Tablet, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.
An overdose of this medicine can cause severe drowsiness, a fast heartbeat, confusion and, in children, agitation and fits. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Most side effects of B-Sys M are mild and settle as the body adjusts. Reported side effects include:
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
| Pregnancy | Pregnancy CONSULT YOUR DOCTOR |
|---|---|
| Breastfeeding | Breast feeding CAUTION |
| Alcohol | Alcohol CONSULT YOUR DOCTOR |
| Driving | Driving UNSAFE |
| Kidney | Kidney CAUTION |
| Liver | Liver CAUTION |
| Habit forming | No |
Consult a doctor before use if pregnant, nursing, or on medication; not recommended for individuals with bleeding disorders.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. The sedating antihistamines are not suitable for very young children, or for people with glaucoma or an enlarged prostate, without medical advice.
May interact with anticoagulants, antiplatelet drugs, and certain antidepressants.
Store in a cool, dry place away from direct sunlight and moisture.
B-Sys M Tablet helps control allergy symptoms like sneezing, runny nose, and itching but does not cure the condition. Stop taking B-Sys M Tablet at least three days before taking an allergy test, as it can affect the test results. Do not discontinue use without consulting your doctor, even if you feel better. Taking more than the prescribed amount of B-Sys M Tablet will not improve effectiveness but may increase side effects. B-Sys M Tablet should be taken before a meal, as food can reduce its absorption.
Medicines with the same active ingredient (Bilastine (20mg) + Montelukast (10mg)). Ask your doctor or pharmacist before switching brands.
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The information on B-Sys M Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.