A member asked:
post nasal drip is causing me to gag and vomit will robitussin cf help also got a cough from the drip?
1 doctor answer
Dr. Ralph Morgan Lewis answered
37 years experience Family Medicine
Yes & no: 2 ingredients in Robitussin CF (cough suppressant dextromethorfan, expectorant guaifenesin) may help but the 3rd (decongestant pseudoephedrine) may keep the nose & sinuses running since it opens sinus passages. May want to use Robitussin-DM or Mucinex dm which don't have the decongestant. Antihistamine like zyrtec (cetirizine) will help stop runny nose. Possible drowsiness with these meds.
Answered on Feb 18, 2015
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