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Codeine / guaifenesin and Drowsiness: What Users Say

Brand names: Cheratussin AC, Guaiatussin AC, Virtussin A/C, Guaifenesin AC, Cheracol with Codeine, Robafen AC, Gani-Tuss NR, Guaitussin AC, Codar GF, Mar-cof CG, Bitex Liquid, Allfen CD, Allfen CDX, Mytussin AC, Guiatussin with Codeine, Glydeine, Guaifen-C, Guaifen AC, Codafen, Guai-Co, Duraganidin NR, Diabetic Tussin C Dex-Tuss ExeClear-C Guiatuss AC Brontex M-Clear WC Pro-Clear …show all brand names

Drowsiness: mentioned by 4 users (4.6%)

Based on user experiences from 87 Codeine / guaifenesin reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

headaches 12.6%
cough 9.2%
chest pain 4.6%
drowsiness 4.6%
nausea 4.6%
sore throat 4.6%
insomnia 3.4%

Reviews for Codeine / guaifenesin

Showing 4 reviews tagged with "drowsiness". Clear filters to view all 87 reviews.
Commonly mentioned side effects
  • Anonymous
  • Taken for less than 1 month
  • November 1, 2012

Codeine / guaifenesin for Cough "Works great! Quiets a hacking cough, no matter how bad. Works the best when other products don't work. Does cause drowsiness, though, but that's not bad if it's night time or you're convalescing at home anyway from being sick. Great stuff!"

9 / 10
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28 Report
  • Vau...
  • December 5, 2016

Codeine / guaifenesin for Cough "I tried this brand for the first time. My previous option makes me drowsy. Back to the point, the only thing Robitussin has done for me is caused gas and random bowel movements. No help in the intended purpose."

1 / 10
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8 Report
  • Sle...
  • August 23, 2017

For Cough "I was given this medication after battling a bad sinus infection for 3 weeks now. The med helped my cough for maybe the first day, afterwards, I have been dealing with bad headaches and going on two days without sleep. Needless to say, after going to the doctor numerous times, I'm still coughing (dry cough), sore throats, chest congestion, and painful chest due to all the coughing at night. Looking forward to a quick recovery soon. I'm on my 2nd dose of steroids and antibiotics, I need relief!!"

2 / 10
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6 Report
  • Anonymous
  • December 5, 2016

Codeine / guaifenesin for Cough "I loved it. I wasn't drowsy when I woke up. Didn't taste bad either."

9 / 10
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3 Report

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