Source:http://linkedlifedata.com/resource/umls/id/C1807658
NCI: A combination preparation containing sodium bicarbonate, aspirin and citric acid, with analgesic and acid neutralizing properties. Sodium bicarbonate and citric acid provide rapid dissolution of aspirin in water. Sodium bicarbonate also neutralizes stomach acid. Aspirin, a salicylate, binds to and blocks the activities of cyclooxygenases thereby exerting analgesic, antipyretic and anti-inflammatory effects. This preparation is used to relief pain associated with stomach acid.