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. 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.