Montac-D Tablet is a prescription medicine. It is used to treat gastroesophageal reflux disease (Acid reflux) and peptic ulcer disease. It relieves heartburn, stomach pain or irritation, and indigestion. It promotes the movement of food in the stomach to prevent nausea or vomiting. Montac-D Tablet is a combination of two medicines. It is to be taken in the dose and duration advised by your doctor. In case you have missed a dose, take it as soon as you remember. Finish the full course of treatment even if you feel better. A high dose or overdose may have harmful effects on the body. This medicine is generally well tolerated by patients. However, it may cause diarrhea, sleepiness, tiredness, headache, confusion, muscle pain in some people. Before taking the medicine always consult your doctor if you are pregnant, breastfeeding, or if you are suffering from any severe stomach, liver, kidney disease, or any known disease.