ve started on the generic of mucinex
and it only has 400 MG of ONLY
GUAIFENESIN. I would say ask your doctor
and if they say you shouldn't take it because of birth defects then don't. Also, remember you're only supposed to take it 5 days before O and some doc's say you can take it the day after O. This is because sperm may live up to 5 days in the fertile rich CM. Just a note...