I have only used Tums when I have heartburn. They work fast. I had heartburn bad with both my pregnancies so I had to carry my Tums everywhere I went. I don't care for the taste but honestly, they aren't that bad.
Ummm ... I don't really get heartburn but when I get a stomachache which you can use tums for it helps but I don't really use tums so I can't really say anything about them because I don't really get stomachaches so yea that what I think about tums