Rennie is the ideal antacids for heartburn in pregnancy
. Rennie contains natural active ingredients - 680mg calcium carbonate and 80mg
. magnesium carbonate
. Rennie does not contain aluminum which can be associated with constipation
. during pregnancy
. Rennie does not cause constipation, flatulence, gastric distention or diarrhea
. Rennie is an excellent safety profile with over 100 billion tablets sold since 1929
. Rennie is an excellent source of calcium during pregnancy

Always read the label.
If symptoms are severe or prolonged, you should consult a doctor or pharmacist.