1) Alkaliser 2) Alkalizer 3) An antacid 4) Antacid 5) Antiacid 6) Big name in antacids 7) Brand spelled out in ads 8) Famous misspelling in ads 9) Gastric antacid 10) Maker of Softchews antacid 11) Pfizer brand 12) Relief, spelled out 13) Rival of Tums 14) Tums alternative 15) Tums rival Found on https://www.crosswordclues.com/clue/rolaids