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Codeine / guaifenesin and Insomnia: 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

Insomnia: mentioned by 3 users (3.4%)

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 3 reviews tagged with "insomnia". Clear filters to view all 87 reviews.
Commonly mentioned side effects
  • Jen...
  • Taken for less than 1 month
  • November 29, 2022

For Cough "I don’t know why, but every single night I took this while having pneumonia, it caused insomnia. I felt sleepy for about 15 minutes about half an hour after taking, then I was wide awake. Nothing worked to fall asleep. I don’t think I will ever take this again. NyQuil works better."

3 / 10
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2 Report
  • Anonymous
  • September 15, 2020

Codeine / guaifenesin for Cough "Virtussin A/C helped with the mucus drainage from my nose but not with my throat, it only made my throat feel worse. Every time I took some, it made me sleep, and then each time I woke up feeling horrible compared to the first times."

6 / 10
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2 Report
  • Kim...
  • March 12, 2016

Codeine / guaifenesin for Cough "I feel nervous and can't sleep after taking this."

6 / 10
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25 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.