User Reviews for Mucinex

This helped with a nasty cold when other OTC mixtures (with less guaifenesin) did not work. The 600mg tab has almost no side effects, though once in a while can make me feel woozy. Made a huge difference in loosening phlegm, helping me sleep, reduced coughing so my vocal chords are not as irritated. Also, my nasal passages cleared up significantly the first day I took it. It's important NOT to split the tab, it is hard to swallow, but it's formulated as sustained-release. It can't do it's job over 12 hours unless it is taken whole. Also, drinking lots of fluids (not coffee, tea) does help. Miracle drug (Mucinex)!

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.

About and hour and a half after taking one Mucinex DM I developed severe dizziness, drowsiness, bad intestinal cramps, vomiting and diarrhea that recurred over a period of 2 hours. It was the only medication in my system.

Very effective for the sinus congestion and sinus drip. However, continuous use resulted in leg cramps at night. Interfered with sleep. Research says that it can reduce blood flow to legs.

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!

I was advised by a screening nurse to take Mucinex for a particularly persistent cough with a lot of phelgm. After about a week of taking Mucinex, my cough was slightly better, but I noticed that my endometriosis had subsided! I have been suffering from endometriosis for the past 20 years...tried eveything (Nafarelin, birth control bills, laparoscopic surgery, pregnancy, Lupron depot, ovariohysterectomy) and nothing helped the pain...I felt like my urinary bladder was under constant pressure and the only relief was immediately after urinating, but the pain would immediately return. I saw several urologists and they tried treating me for overactive bladder and interstitial cystitis, but the only definitive diagnosis was endometriosis.