TTC Guacifenesin ? aka Robitussin or mucinex.

Okay , so trying to conceive I heard about women taking robitussin to help make your cervical mucus thicker .

Here's a post I've found online :

"How does it work? Guaifenesin is an expectorant. It's used to relieve congestion by liquefying mucus in your lungs, allowing you to cough it up. And because it works systemically on all mucus in your body, it can make your cervical mucus more liquid, to"

I've seen some things online but are there any ladies that have actually done it and had success?