Symptoms of an overdose include nausea and vomiting, constipation, tiredness, increased urine production, increased thirst, dehydration and abnormal muscular weakness. Alginic acid forms a protective barrier in the stomach to stop acid from escaping upwards, soothing that burning pain in your chest Please consult your doctor or pharmacist before taking Rennie Dual Action Tablets if you have any kidney problems, have been diagnosed with sarcoidosis (inflammation disease that affects multiple organs in the body), or suffer from severe or chronic gastro-intestinal symptoms or diseases.

This product contains 14mg of sodium (main component of cooking/table salt) in each tablet. This is equivalent to 0.7% of the recommended maximum daily dietary intake of 3/5 Trapped wind in your abdomen can be caused by excess swallowed air moving from the stomach into the intestines where it can make you feel bloated until the air is released as flatulence. If you wear clothes that fit tightly around your waist this will increase the pressure on your abdomen and make you even more uncomfortable. Another cause of abdominal bloating is gas produced by bacteria in your colon as they break down the residue from the small intestine. Most of this gas is absorbed into your blood stream, the rest is released as flatulence. Do not take more than 12 tablets in 24 hours. This medicine is only for adults and children over 12 years. Do not give to children under the age of 12. Prolonged use should be avoided. Calcium salts reduce the absorption of fluoride and iron containing products, and calcium salts and magnesium salts can hinder the absorption of phosphates.In general calcium containing antacids should be carefully administered in patients with constipation, haemorrhoids and sarcoidosis.

Rennie Dual Action tablets provide long-lasting relief from heartburn and acid indigestion in just two minutes. Indigestion can strike at any time and there are many different causes, from rich food and fizzy drinks to stress and eating on the run. Some people get indigestion a couple of times a year but others suffer every day with symptoms ranging from mild discomfort that lasts just a few minutes to severe pain, sometimes accompanied by nausea and vomiting, that goes on for several hours. Prolonged use of high doses may possibly result in hypermagnesaemia or hypercalcaemia and alkalosis (GI symptoms such as nausea and vomiting, fatigue, confusion, polyuria, polydypsia, dehydration), particularly in patients with impaired renal function. Prolonged use of high doses of calcium carbonate with milk may lead to Burnett syndrome (milkalkali syndrome). Patients with rare hereditary problems of fructose intolerance, glucose-galactose malabsorption or sucrase-isomaltase insufficiency should not take this medicine.

Heartburn is an unpleasant condition that occurs when acid from the stomach leaks into the oesophagus and rises upwards to cause pain and discomfort in the chest. Heartburn is an unpleasant condition that occurs when acid from the stomach rises up into the oesophagus and the throat where it causes a burning pain. This action is called acid reflux.The pain of heartburn can last for several hours or more and is often made worse by eating. Many people suffer sleepless nights as a result of heartburn because lying down can trigger the condition and increase the pain.