Managing your breathing is vital for both you and your baby. Your prenatal supplement, Folfast-D, is safe and highly recommended. Inhaled medications like Sereflow (salmeterol/fluticasone) are generally safe and preferred for asthma control during pregnancy. However, oral medications like Doxolin (doxofylline), Mok LC (montelukast/levocetirizine), and Rantac (ranitidine) require a careful safety review by your obstetrician, especially during your first trimester. Please do not discontinue your inhaler without consulting your doctor, as maintaining good oxygen levels is crucial.