Guaifenesin, the active ingredient in Mucinex, works to thin the mucus or phlegm in a person’s lungs. The theory is that Mucinex could increase a person’s fertility by thinning another type of ...
Mucinex is not scientifically proven to increase a person’s fertility and help them get pregnant. But doctors say there’s generally no harm in taking the medication while trying to conceive due to the ...