What is this about taking Robitussin to help with cervical mucus?
Plain Robitussin, or any generic with the guaifenesin as the only active ingredient, is an expectorant and helps thin mucus in your body, including cervical mucus. It does not create mucus for you, but can thin out thick mucus (a common side-effect of Clomid). The recommended dose is 2 teaspoons 3 times a day with a full glass of water, but you can take up to the maximum dose on the label. It should be started about 5 days before ovulation and continued through ovulation day. The water is very important since your body needs the fluid to create the mucus, and the guaifenesin can cause constipation. See the Robitussin FAQ.