What is antacid? Why antacid is required to get rid off stomach acidity? Share with your friends Share 1 Jahirul Mazumder answered this Please refer to the following link: https://www.meritnation.com/ask-answer/question/what-is-the-chemical-formula-for-antacid-which-is-a-base/acids-bases-and-salts/5639956 https://www.meritnation.com/ask-answer/question/a-mention-the-ph-range-within-which-our-body-works-expl/science/6024906 0 View Full Answer Vansh answered this ANTACID IS A SUBSTANCE WHICH NEUTRALIZES STOMACH ACIDITY. IT CONTAINS BASE SODIUM HYDROXIDE WHICH WHEN REACTS WITH HYDROCHLORIC ACID(HCL) AND NEUTRALIZES IT. BY THIS WAY ANTACID HELPS GET RID OFF STOMACH ACIDITY. 1