I'm not much help because I am currently sucking down nealry 3L of milk a day. However I have those chalky tabs/drinks so only take them if necessary.
Pick one that has minimum or no aluminium in it (Rennie I think has the lowest). Zantac can also be taken.
One that really worked for me last time (just keep forgetting to buy them this time) is Fruit TIngles - you know the lollies?
Also make sure you don't lie down for an hour or so after meals.