Once I had couple of large beers. After that I've got acidity. So Is it OK to take antacid tablet after drinking beer?
It depends... I don't see an issue with the standard Tums or Rolaids but there might be issues with ranitidine according to some studies.
"The effect was striking," says author Charles Lieber, MD. In a three-hour test period, conducted under conditions similar to social drinking, the study showed that ranitidine can increase blood alcohol content by 38%. Levels reached in the study exceeded the legal drinking limit -- and the effects lasted up to two hours after drinking stopped.
(not enough rep to comment yet)
I've been prescribed Ranitidine and it says "AVOID ALCOHOL" in all caps, so you know it's important.