1/3 are unaffected while 1/3 actually improve. Asthma meds
are either class b or c. The difference - while class c drugs may cause problems in pregnant laboratory animals no problems have been reported in humans. Uncontrolled asthma is a greater risk to your pregnancy
than any class c drug. Pulmicort, singulair
) & Atrovent
HFA are class b asthma drugs.