Mucinex and Nausea: What Users Say

• mel...
• February 23, 2014

For Bronchitis "Took this medication for a chest cough before I went to bed. Woke up in the night with severe nausea and felt dizzy. Tried it again a week later and the same happened. I know other people who swear by it."

• sy9...
• Taken for less than 1 month
• January 2, 2016

For Cough "I would give this a zero out of ten if it was possible. I rarely get sick, but I have been having a lot of trouble with a runny nose and coughing up mucus. This 'medicine' doesn't do anything. Not only does it taste terrible, but it's useless. Followed instructions, and I'm on day 7 with the same problems. Avoid this stuff."

• Pup...
• Taken for less than 1 month
• May 16, 2016

For Cough "I took this attempting to get rid of a cough and chest congestion. I am a 105 lb 30-year-old female. I took one pill yesterday and felt a little better. That was a half dose, so today I tried 2 pills, a full dose. After feeling nauseous for several hours, I finally threw up several times and am feeling much better. I will not be taking it again and would rather allow the congestion to run its course."

• Sky...
• December 29, 2022

"When I first started using Mucinex, an oval-shaped pill, about seven years ago for cough congestion, they worked great. As the years progressed, whenever I had similar symptoms, Mucinex worked less and less. I switched to the liquid formula about three years ago with the same results. I am on day three of using Mucinex congestion and cough medicine. I will never take this medicine again because I feel a lot worse after starting it. I can't sleep because of excessive coughing that I didn't originally have, headache, which I rarely get, and nausea. Not worth it. I'll try home remedies the next time."

• Anonymous
• October 31, 2011

For Cough "I took one tablet 12 hours ago and have been feeling very sick ever since. My nose is running, coughing, and feeling terrible, as if I had a bad cold. Not taking any more!"

• Anonymous
• April 11, 2011

For Cough "This medicine made me sick. I took one 12-hour slow-release tablet with a large glass of water, and it's a week later, and I still feel nauseated."

• Jo7...
• January 15, 2017

For Cough "Gave me diarrhea, dizziness, nausea, stomach cramps, and even some numbness in tongue/face. Worse than the cough. Never again."

• Tin...
• September 7, 2021

"I took Mucinex Cold & Flu, and it works, but it made me have diarrhea, severe stomach problems, and nausea."

• mrs...
• Taken for less than 1 month
• May 4, 2022

For Bronchitis "Took Mucinex once yesterday and was fine but a bit nauseous from it, even with food, today the second dose made me throw up and feel absolutely awful within an hour. Would not recommend."