Generic Name: Mucinex DM (dextromethorphan-guaifenesin)
Mucinex DM Reviews
For Expectoration "I wasn't feeling well, and it was recommended that I try Mucinex DM. I took one 12-hour pill and started to feel better, or so I thought. Halfway through the 12-hour dose, I started to have blurry vision, and I could feel something covering my eye. I went to look at my eye, and I had green mucus coming out of it. First, it was one eye, then it was both. I thought I might have conjunctivitis (pink eye), but once I stopped taking the Mucinex DM, the issue went away. I will never again take this product. Just doesn't work for everyone."
"Guy on here said it made his heart race which made him use his inhaler?..Asthma inhalers can make you jittery so you literally did the opposite of what you should have done. Another person said something about a flu shot and them telling him the flu symptoms were not related? Come on..the vaccine is a weakened version of the flu so of course it cause flu symptoms. I wouldn't expect it to do much in that situation but usually when experiencing coughing at night the suppressant is good and with congested sinuses during the day the expectorant is good. check for possible interactions with other meds, hydrate PLENTY, dont just start by taking the highest recommended dosage, this is not a cure for covid or other viruses but can help clear out phlegm. Definitely not for everyone but works for most."
For Cough "Took Mucinex at 5 in the afternoon. Around 8, took my night meds. Next morning, stumbling around, body felt like it was flooded with heat-chest and arm pains. Had myself checked out and was ok. Pulled up the website to get a complete list of medicines not to take it with and found my answer there. If you have access to the internet, I would put the OTC medicine in and get a complete list of what not to take it with."
For Expectoration "215 lb. male with headcold / chestcold and extreme congestion. Only used Mucinex for two days during daytime with lots of H2O. Broke all congestion loose resulting in sinus drainage and productive cough. Great stuff. Made me feel kind of "buzzy". I would not recommend mixing with other meds (e.g., Nyquil). This would likely cause adverse reactions. Very important to over hydrate when taking!"
For Expectoration "This medication combines both Dextromethorphan (suppression) and Guaifenenesin (thins mucus). As a result, the ingredients work against one another to a certain extent. Those using it and experiencing adverse effects (dizziness, racing heart rate, panic, etc.) were likely reacting to the Dextro, which triggers many of the issues that are being complained about. So my suggestion is to use Mucinex (plain basic type) first thing in the morning. It lasts for 12 hours and allows your chest to cough up the mucus and clear your lungs. Then at night, use a cough suppressant (not including Guaifenesin) medication that will allow you to sleep and bring the other benefits you seek. Do not blame a product when you have not done your homework! You should consult with the pharmacist if you have any health issues or are likely to experience any drug interactions. Also, do not take the maximum dose unless you discover you need it. Remember dosage levels relate to body weight too!"
For Cough "Medicine works very well for the specified 12 hours but wow it is very strong. I weigh 105 pounds and taking an entire pill will have me falling over and seeing double very shakey also but giving it a seven because at least I can breathe now and this is the only medication that works for that my inhaler won't even help me any more."
For Cough "Am nursing to 7 months old baby. Had bad sore throat, congested nose. Took Mucinex DM only 4 doses & it worked well. No side effects on baby. I like it & recommend it. 1st dose made my eyes watery but then everything went okay."
For Cough "Took mucinex md for the onset of cough. The musimex the first day I noticed an improvement but had slight troubled sleeping. The second day no improve the from the mucinex and zero sleep. In combination with my other asthma meds it made my heart race which made me have to take rescue inhaler. I recommend going to dr before taking this with asthma patients."
For Cough "(51F) I took two pills of MucinexDM for Covid symptoms, and it didn’t touch my cough or congestion. But, my eyes swelled shut and started leaking copious amounts of green goo, and my pulse was over 100 even at rest. Not a good first experience!"
For Cough "I had flu symptoms after a flu shot. They came on immediately but the pharmacist at Walgreens said that the connection was impossible and recommended Mucinex. It does absolutely nothing to relieve the cough, runny nose or anything. She said that the Nyquil I intended to buy wouldn't work. No more Walgeens or Mucinex for me."
For Expectoration "While taking Mucinex DM 600mg, twice a day for 7 days, I hadn't realized why I was itching something fierce. Until my 7th day when I looked up the side effects. Absolutely nothing helped to ease the itch all over but scratching. Other than that, my congestion has eased significantly."
For Cough "Had chest congestion, stuffy nose and sore throat the instructions recommended 1 or 2 tablets it worked very well. However I'm spitting aqua blue/green saliva??? can't find any reference in my research indicating this being one of the side effects ..."
For Cough "I have a cold with a cough, some post nasal drip, and congestion. I took this before bed hoping to calm the cough and get some of the stuck mucus out of my chest. It did help me suppress the cough, but also made me wake up at 4 am with a panic attack. Fingers tingling, face numb, heart beating crazy fast, and feeling nauseous and dizzy. Unable to fall back asleep. I have had a similar reaction with dextromethorphan before, but not since I was a kid. I don't recommend taking this if you have adverse reactions to sleep medicines or other sedating medication. I often have the opposite effect with those meds, and this was no different."
For Cough "The directions say take 1 or 2 pills every 12 hours. I took 2 pills and landed in the ER. Very strong meds!"
For Expectoration "Horrible side effects. Felt like I was having an anxiety attack"
For Expectoration "Had very bad anxiety during the whole night. Was confused. Heart rate was very high. Palpation was abnormal. Chest tightness. Can not sleep. Stomach upset."
For Cough "All this pill does for me is make me really lightheaded and Numb all day. I’m never taking Mucinex Dm ever again."
For Cough "this medicine definitely reduced congestion in my nose. I had not been able to breathe out of the right nostril for several days."
For Expectoration "Inflames BPH prostate enlargement,raises blood pressure about 20%"
For Cough "Fantastic! I panic if I don’t have these in the house. I get a terrible cough 2-3 times a year and this suppresses cough so I can sleep and thins mucus at same time"
For Cough "Muncinex DX did not work for my son and I. Instead of controlling our cough, we coughed for hours. It did not loosen our mucus as stated on the box. I would not recommend this product."
More about Mucinex DM (dextromethorphan / guaifenesin)
- Check interactions
- Compare alternatives
- Pricing & coupons
- Drug images
- Side effects
- Dosage information
- During pregnancy
- Support group
- Drug class: upper respiratory combinations
- En español
Patient resources
- Mucinex DM drug information
Other brands
Tussin DM, Robitussin Cough + Chest Congestion DM, Guaifenesin DM, Mucus Relief DM, ... +25 more
Professional resources
- Mucinex DM prescribing information
Other brands
Tussin DM, Biocotron, HT Tuss DM
Other formulations
- Mucinex
Related treatment guides
- Expectoration
- Cough
