Gistress 500mg/5ml Suspension is used in the treatment of ulcers in the stomach and intestine. It promotes the healing of ulcers by forming a coating over them which acts as a physical barrier. Gistress 500mg/5ml Suspension is taken one hour before meals preferably at bedtime in the dose and duration advised by the doctor. You should keep taking this medicine for as long as your doctor recommends. If you stop treatment too early your symptoms may come back and your condition may worsen. The most common side effect of this medicine is constipation. Take plenty of fluids while taking this medicine to prevent this. Dizziness and sleepiness may occasionally occur, so do not drive or do anything that requires mental focus until you know how this medicine affects you. Before taking Gistress 500mg/5ml Suspension inform the doctor if you are suffering from any liver or kidney disease. Let your doctor know about all other medications you are taking as some may affect, or be affected by this medicine. Do not take antacids within two hours of taking this medicine.