Aspirin (NSAID)/pain reliever, citric acid/antacid, sodium bicarbonate/antacid. Heartburn. Acid indigestion. Sour stomach with headache. Body aches and pains. Compare to active ingredients of Alka-Seltzer (This product is not manufactured, distributed or licensed by the maker of Alka-Seltzer). 100% satisfaction guaranteed. www.valuelabels.com. Serious side effects associated with the use of this product can be reported to the following address: Tower Laboratories LTD. PO Box 306, 8 Industrial Park Rd. Centerbrook, CT 06409.