Instigo-L Tablet SR is a prescription medicine which is used in the treatment of gastroesophageal reflux disease (acid reflux), intestinal ulcers, and irritable bowel syndrome. It reduces excess acid production in the stomach and prevents the reflux of stomach acid into the food pipe. Instigo-L Tablet SR is taken with or without food in a dose and duration as advised by the doctor. The dose you are given will depend on your condition and how you respond to the medicine. 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. Let your healthcare team know about all other medications you are taking as some may affect, or be affected by this medicine. The most common side effects are nausea, stomach pain, diarrhea, flatulence, constipation, headache, weakness, and flu-like symptoms. Most of these are temporary and usually resolve with time. Contact your doctor straight away if you are at all concerned about any of these side effects. It may also cause dizziness and sleepiness, so do not drive or do anything that requires mental focus until you know how this medicine affects you. Avoid drinking alcohol while taking this medicine as it can worsen your sleepiness. Lifestyle modifications like having fiber-rich diet, avoiding foods that trigger your symptoms, increasing fluid intake and regular exercise can help you to get better results. Before taking it, you should tell your doctor if you have any kidney or liver diseases. You should also tell your doctor if you are pregnant, planning pregnancy or breastfeeding.