Is alka-seltzer okay to take while pregnant?
That said, a doctor would probably tell you that it’s not safe, since Alka-Seltzer contains aspirin, which has been linked to Reye’s Syndrome. The US FDA recommends that pregnant women do not take any medications containing aspirin particularly in the last trimester unless specifically directed to do so by a physician; the World Health Organization considers it unsafe while breastfeeding as well.