LPT How to get rid of heartburn instantly Many people tend to use Alka Seltzer or Tums. Which sometimes does the trick but some people need something a little more powerful. Try using 1/2 a teaspoon of baking soda mixed with 4 ounces of water. If heartburn is severe increase the baking soda amount. It gets rid of it instantly and you just burp a few times to get rid of the excess gas. W…