My heartburn started at the beginning of my second trimester, so I tried Zantac. I stopped taking Zantac halfway through my third trimester because it suddenly stopped working, and Tums provided zero relief. When the heartburn gets really bad and unbearable now, I start with one tablet of Mommy's Bliss and take it from there because the label advises you not to exceed 6 tablets in 24 hours. The tablets are not huge, taste mild, and are not very chalky in texture. My husband just started taking them when he gets heartburn/indigestion and prefers them over Tums and he usually only needs one.