Oncet 3D Tablet SR is a combination medicine used in the prevention of asthma It relieves allergy symptoms such as runny nose stuffy nose sneezing watery eyes and congestion or stuffiness It also helps in relaxing the muscles of the air passages thus widening it and making it easier to breathe Oncet 3D Tablet SR can be taken with or without food Take it at the same time to get the most benefit It is advised to have it 2 hours before exercise if you have exercise induced asthma 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 Swallow the tablets whole with a drink of water You should take this medicine for as long as it is prescribed for you It does not cure sudden breathing problems so always carry a medicated inhaler with you It is generally safe medicine with few common side effects include Nausea vomiting headache abdominal pain and diarrhea If these bother you or appear serious let your doctor know There may be ways of reducing or preventing them Generally you should avoid alcohol while taking this medicine Before taking this medicine you should tell your doctor if you have ever had severe liver problems 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 inform your doctor about pregnancy or breastfeeding