Active substance
Calcium Antacid
2 products from 1 companies contain this in United States.
2 without prescriptionTablet, Chewable
Available without a prescription
Extra Strength Smooth Antacid Assorted Fruit750 mgWithout prescription CVS · Calcium AntacidUltra Strength Antacid Tropical Fruit1000 mgWithout prescription CVS · Calcium Antacid
Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.