I asked my GP about this a couple months ago and he said it was fine. I haven't talked to my OB yet (just found out this week). I think the regular ones are fine, maybe not the extra strength. But maybe check with your doc before eating the whole bottle ;-)
my OB said regular Tums are fine for heartburn. Tums can sometimes make me really constipated though, so I don't take them unless I really need to. They don't help with my nausea, but Preggie Pop Drops do! They are amazing!! I order them from Amazon.
Re: Sour stomach and tums