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Bilachek Syrup

Written By Dr. Sakshi Jain, MS, BDS
Reviewed By Dr. Rajeev Sharma, MBA, MBBS
Last updated on 25 Nov 2025 | 03:05 PM (IST)
Bilachek Syrup is an anti-allergic medicine. It is given to children to treat a wide range of symptoms associated with allergic conditions such as hay fever, urticaria (hives), conjunctivitis (red, itchy eye), and the common cold. These symptoms may include watery eyes, runny nose, sneezing, and itching.
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General Information

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Your child’s medicine at a glance

Bilachek Syrup can be taken one hour before or two hours after food, but take it at the same time to get the most benefit. It should be taken as your doctor's advice. The dose and how often you take it depends on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. Remember dosage is decided on the basis of the type of medicine (tablet or syrup ), age, and present medical condition of the person. You should take this medicine for as long as it is prescribed for you. If you do not observe any improvement in the symptoms, consult with the doctor.
The most common side effects of this medicine include headaches and drowsiness. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. Generally, it is advised to drink plenty of fluids while on treatment with this medicine. To overcome dizziness, avoid driving or attention-seeking activities until you know how the medicine affects you.
Before taking this medicine, let your doctor know if you are pregnant, or breastfeeding. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works.  You must avoid fruit juice before taking the medicine.

Uses of Bilachek Syrup in children

Benefits of Bilachek Syrup for your child

Treatment of Allergic conditions
Allergic conditions like a runny nose, sneezing, itchy or watery eyes, and skin rashes occur when the body reacts strongly to allergens such as dust, pollen, or animal dander. Bilachek Syrup helps relieve these allergy symptoms by reducing irritation and discomfort, allowing individuals to carry out daily activities more comfortably.

Side effects of Bilachek Syrup in children

Bilachek Syrup does not pose serious side effects and is well-tolerated by children. In case the side effects do occur, they’re likely to subside once the body adapts to the medicine. Consult your child’s doctor if these side effects persist or bother your child. The most common side effects include-
Common side effects of Bilachek
  • Vomiting
  • Nausea
  • Stomach pain
  • Constipation
  • Dizziness
  • Sleepiness
  • Fatigue
  • Headache

How can I give Bilachek Syrup to my child?

Take this medicine in the dose and duration as advised by your doctor. Check the label for directions before use. Measure it with a measuring cup and take it by mouth. Shake well before use. Bilachek Syrup is to be taken on an empty stomach.

How Bilachek Oral Solution works

Bilachek Syrup belongs to a class of medicines called antihistamines. It blocks the natural chemical substance (histamine) produced in the body during an allergic state. It also subsides (lowers) your child’s immune system’s response to these conditions, thereby reducing the symptoms.

Quick tips

  • Try giving the medicines at the same time each day to help you remember.
  • Your child may feel sleepy or dizzy after each dose of Bilachek Syrup. If this happens, make your child sit or lie down and ask them to be careful while performing tasks that require mental focus.
  • Avoid giving Bilachek Syrup with fatty meals and fruit juice as both can reduce the absorption of the medicine.
  • Bilachek Syrup can trigger constipation in your child. Give plenty of fluids and a fiber-rich diet to your child.
  • Do not share your child’s medicines with others and do not give anyone else’s medicines to your child.

Safety advice

Kidney

Kidney

SAFE IF PRESCRIBED
Bilachek Syrup is safe to use in patients with kidney disease. No dose adjustment is recommended.
Liver

Liver

SAFE IF PRESCRIBED
Bilachek Syrup is safe to use in patients with liver disease. No dose adjustment is recommended.

Interaction with drugs

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

Rifampicin (Oral Route)

If concurrent use is essential, your doctor may monitor your treatment and adjust the doses as per the observations. Rifampicin may reduce blood levels of Bilastine.
Moderate

Rifampicin (Injection Route)

If concurrent use is essential, your doctor may monitor your treatment and adjust the doses as per the observations. Rifampicin may reduce blood levels of Bilastine.

Frequently asked questions

No, although this medicine causes drowsiness as a side effect, it should not be given to induce sleep in children. Consult your child’s doctor if your child has trouble sleeping as it could be due to some other underlying condition.
Safety studies of Bilachek Syrup in children less than 6 years of age are not available. Therefore, it is advised to avoid giving Bilachek Syrup to children under 6 years and consult your child’s doctor in case of any confusion.
Bilachek Syrup can sometimes interact with other medicines or substances. Tell your doctor about any other medicines your child is taking before starting Bilachek Syrup. Also, check with your child’s doctor before giving any medicine to your child.
Bilachek Syrup should be given strictly as prescribed by your child’s doctor. The dose of the medicine is calculated according to your child’s body weight and age. Do not increase or decrease the dose on your own as it may cause unwanted effects and can worsen your child’s condition.
Although Bilachek Syrup is relatively safe to use in children yet an excessive amount may cause some serious side effects such as seizures, hallucinations, rapid heart rate, irritability, slow breathing, and coma.
Store Bilachek Syrup at room temperature, in a dry place, away from direct heat and light. Keep all medicines out of the reach and sight of children to avoid any accidental intake.

Fact Box

Chemical Class

Benzimidazoles

Habit Forming

No

Therapeutic Class

RESPIRATORY

Action Class

Second-Generation H1 Antihistamines
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User feedback

Allergic conditions
100%
Excellent
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Average
33%
No Side Effect
100%
With food
100%
Expensive
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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: Mankind Pharma Ltd
Address: 208, Okhla Industrial Estate, Phase III, New Delhi - 110020

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Bilachek Syrup. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India
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Most medicines cannot be sold without a valid prescription, as per the Drugs and Cosmetics Act, 1940 and Rules, 1945
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