Mucinex D and Dizziness: What Users Say

• Sin...
• Taken for less than 1 month
• April 14, 2013

For Cough and Nasal Congestion "I have suffered from allergic rhinitis all my life: dry, swollen sinus; sinus pressure; headaches; blurry vision; dizziness; lethargy; all sorts of cognitive problems because of the lack of oxygen to my body and brain due to thickened mucus in my respiratory system; not to mention frequent bacterial infections due to accumulated mucus secretions. I had tried every other medicine under the sun. Mucinex has taken all that away, and my quality of life has improved 150%. I strongly recommend Mucinex for those with sinus problems due to allergic rhinitis, or anyone who suffers from sinus or any sort of respiratory congestion."

• Nnn...
• November 12, 2015

For Cough and Nasal Congestion "It helped with the runny nose and cough, but I think the side effects made it not worth taking. The first hour was the immediate release, and it made me feel nervous, anxious, dizzy, nauseous, and I had awful tremors. After the first hour, I came down a bit and didn't feel as awful. Couldn't get any sleep on it, and being a mom of a one-year-old boy, I definitely need my sleep. I won't be taking it again. Going to go back to DayQuil, NyQuil, cough drops... Not for everyone."

• Anonymous
• April 10, 2012

For Cough and Nasal Congestion "I experience sinus problems frequently, mostly from allergies, probably. I have headaches and a stuffy nose, etc. This medication is wonderful. I should receive money for how many times I have recommended this to people. I feel like I can even think clearer when I take this. I rarely experience side effects. Maybe one time I had dizziness. Great product."

• u2a...
• November 6, 2011

For Cough and Nasal Congestion "My sister recommended this to me while I was experiencing several nasal congestion and cough. The product works GREAT WHEN USED AS DIRECTED. She suggested taking 2 (12 hour) pills instead of the one that was suggested on the box. (She had done this and thought I'd be okay.) I experienced VERY SEVERE side effects. I became extremely lightheaded, dizzy beyond belief, loss of concentration, and severe loss of appetite. I literally felt like I was walking on clouds. I suggest also not taking this at night as it will keep you up ALL night. One pill in the morning is enough to get you by."

• Anonymous
• February 25, 2011

For Cough and Nasal Congestion "When I took Mucinex D maximum strength for the first time, I did have great relief of congestion, but I also experienced a very scary rapid heartbeat, dizziness, and anxiety. The anxiety may be due to feeling like I had something really wrong going on, I'm not sure. I have taken many different OTC medications through the years and have never had an experience like this one."

• Pat...
• Taken for less than 1 month
• February 20, 2017

For Cough and Nasal Congestion "I went to Urgent Care Center today for a sinus infection. I got a prescription and was told to take Mucinex D. I took it a couple of hours ago, and I've been feeling weird ever since. It's ineffective so far, and I feel kind of dizzy. I want it out of my system NOW."

• Jul...
• January 22, 2018

For Cough and Nasal Congestion "I took it at about 5 pm today when my cough was getting worse. It is now 5:30 am, and I haven't slept one bit. I am so jittery, nauseous, and dizzy. My heart is racing, and my whole body is shaking. My cough is significantly better, but the fact that I will not be getting sleep tonight for even a minute is quite the turn-off. I will never take this drug again."

• Moi...
• January 10, 2015

For Cough and Nasal Congestion "Helped somewhat with congestion, but I could not continue to take it due to insomnia (even after taking it during the day), jitters, dizziness, and anxiety."

• Bla...
• January 30, 2016

For Cough and Nasal Congestion "Loosened phlegm, but makes you feel very dizzy, drowsy, and dehydrated."

• Mit...
• December 16, 2017

For Cough and Nasal Congestion "This medicine cleared my nose but also made me feel dizzy, gave me tremors, nausea, and made my heart pound. I felt awful after taking this and wouldn't recommend it to anyone."