Yes, but you are still adding a significant amount of acid to the stomach, way more than is supposed to be there. If your body can't neutralize the extra acid fast enough (to pass to the S. Intestine for adsorption) then you are either going to have a stomach ache, acid reflux or you may vomit. That's why people take chalky antacids to deal with an overly acidic stomach - your body naturally produces bicarbonate to do that, Tums provides a larger dose.
