Image may vary from actual product due to Continuous manufacturer Product updates. Information we provide is for your reference only. MANUFACTURER: GLAXO SMITHKLINE CONSUMEE. INDICATIONS:. Tums Ultra 1000mg Antacid/Calcium Supplement, Tropical FruitAntacid Use: For fast relief of acid indigestion, heartburn, sour stomach and upset stomach associated with these symptoms. Neutralizes excess stomach acid to give fast relief. Non-laxative, non-constipating. Calcium Supplement Use: As a daily source of extra calcium. The 1000 mg of calcium carbonate in each tablet provide 400 mg of elemental calcium. Very low sodium. Active.