It's generally safe for pregnant women to take antacids such as TUMS to treat acid reflux, commonly referred to as heartburn, according to WebMD. However, there may be more effective treatments, including liquid antacids and lifestyle changes, that can reduce symptoms.
WebMD urges pregnant women to consult with their doctor before taking antacids. Heartburn sufferers should also eat less spicy food and avoid reclining immediately after eating.
The TUMS's manufacturer advises pregnant women not to take the product and iron supplements at the same time during the day. The company also urges pregnant women to work with their doctor to find the most effective way to treat heartburn and to consider lifestyle changes as a first step before opting for medication.