Mucinex D User Reviews & Ratings (Page 5)

• Dia...
• Taken for less than 1 month
• February 7, 2015

For Cough and Nasal Congestion "Took DM at bedtime and will never do that again! Yes, I felt better and felt some relief, however, the heart palpitations were out of this world! I was so jittery still 3 hours later that I literally couldn't sit still in my bed. Finally, I was able to sleep at 3 and woke up feeling super dehydrated and almost hungover, with puffy eyes and a bad headache. No más!"

• Anonymous
• June 23, 2009

For Cough and Nasal Congestion "I had been struggling for several days with a severe head cold that was beginning to expand to my chest. I was using other over-the-counter medications with little effect. A co-worker mentioned Mucinex D, and I began to experience significant relief with the first dose. I did add an over-the-counter nighttime pain reliever, which really helped me to sleep through the night."

• Anonymous
• September 18, 2016

For Cough and Nasal Congestion "Took this for relief as I looked and sounded pretty bad. I was keeping everyone up with my coughing and sneezing. I don't take medicine, but I caved in and grabbed this. I guess from hours of exhaustion, I passed out but woke up 2 hours later just wide awake! I couldn't go back to sleep, which made me so incredibly mad. I'm already an anxious person who is paranoid about everything. So this didn't help. It helped my cough calm down, but the next day it was worse. I was able to sleep without feeling like my nose was plugged up!"

• Mom...
• March 17, 2017

For Cough and Nasal Congestion "Followed directions & took 2x Mucinex D 1200mg at 9:30 PM. Decided to pick this up after being sick & out of work for 5 days. I was really tired & dozed off at 11:30 PM. It's 3:30 AM, I can't sleep... I'm wide awake with an extra dry mouth, swelling of the tongue, slight nausea, tossing & turning (anxiety?), tingling/weakness in my arms. Most of my cold symptoms are gone (amazingly!), but I can't shake these side effects right now & am wondering exactly when I'll be able to sleep! I would NOT recommend taking this at nighttime, & if you are going to try this stuff to start with just 1 pill."

• K-R...
• Taken for less than 1 month
• August 22, 2019

For Cough and Nasal Congestion "I’ve been taking Mucinex D for years. 2 a day—1 in the am and 1 in the pm. It was always effective for those stubborn wet coughs, helping me produce phlegm. Until fast forward, in my 30s, post 2 kids and sleep doesn’t come so naturally anymore. I had no idea insomnia was a side effect until about 4 doses in this time. I slept 11-12 am, then woke up at 2:30 am and was WIDE awake and frustrated until 6 am, in which I slept from 6-8 am. Still not realizing it was from the Mucinex D, I took more at 8 am. By 7 pm, while trying to close my eyes and rest, my eyeballs popped back open, when suddenly I realized, “What if...” Sure enough, it was the Mucinex D causing me to be ridiculously tired but unable to sleep. It is the pseudoephedrine ingredient, which is a stimulant. Unfortunately, this side effect does not outweigh the benefits for me. So I’ll be drinking as much water as possible for the next 3 hours before bedtime and hoping for the best tonight. Maybe I should try the Mucinex plain and see how that goes."

• sic...
• Taken for less than 1 month
• November 4, 2016

For Cough and Nasal Congestion "Took this about three days into a pretty bad cold to relieve congestion, especially in my sinuses. Worked a charm! Took the adult dose around noon that day. Didn't have the same jittery side effects some are reporting and was, thankfully, able to take a nap that afternoon with the sinus relief it provided. My mom, on the other hand, says she can't take it after noon or else she won't sleep all night, so I understand your pain. All in all, worked great for me, but I understand that some people (for whatever reason) might have trouble sleeping if taken too late in the day."

• Anonymous
• Taken for less than 1 month
• December 8, 2012

For Cough and Nasal Congestion "This definitely works to clear up nasal congestion, but I took it at 5:30 pm and was up all night. I haven't been able to sleep at all. It's now 4:30 am, and I'm still wide awake. I have to go to work, so I will be taking another dose in an hour to keep me up. I will not take a second dose later today so I can sleep, but I look forward to being able to breathe while I'm at work, so still worth taking the medicine."

• Anonymous
• March 23, 2010

For Cough and Nasal Congestion "This medication cleared my completely congested nose in about an hour. I could breathe perfectly clearly through both nostrils! However, as others have mentioned, it made my heart race, and when I was exercising later that night, I felt lightheaded and had to quit early. I also couldn't sleep that night. My heart was feeling very fluttery, and I was wide awake in bed."

• Anonymous
• September 12, 2011

For Cough and Nasal Congestion "I had an experience with a rare side effect. I began sweating profusely after taking the pill (recommended dosage) after 3 days. After reading further, I have figured out that I drank 2 cups of coffee the third morning when I took the pills, which led to the sweating. Otherwise, I have had no adverse side effects, and it works great! It is just not a good combination with coffee!"

• sle...
• Taken for less than 1 month
• September 23, 2019

For Cough and Nasal Congestion "I agree with so many that have left a review here! I do feel it helps with my cough and congestion, but I agree with the feeling of anxiety, heart racing, and most definitely sleepless nights (which is due to the pseudoephedrine in it)! I need my sleep. I may just take it in the AM or just not take it anymore. Not to mention it is very expensive for OTC (behind the pharmacy) medicine. My prescriptions with my insurance are way less than this!"

• Tir...
• February 19, 2017

For Cough and Nasal Congestion "This stuff is torture! I was coughing a little and had some allergy congestion. The pharmacist recommended this stuff. It's 2:00 AM. I took two pills at 3 in the afternoon, and I have been coughing my lungs out ever since. I'm literally coughing so hard, I'm sweating and have a headache. I feel edgy, and there is no hope of getting sleep tonight."

• 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."

• Sic...
• Taken for less than 1 month
• December 7, 2022

For Cough and Nasal Congestion "I will never take this again, ever. While it did clear my sinuses and gave me that kind of relief, it kept me up all night long, and not just insomnia, but feelings of anxiety as well. I wouldn't even risk taking this during the day, so severe were the side effects. I'm going to stick to my Alka-Seltzer Cold and Flu and my NyQuil. Seriously, do not take this."

• Anonymous
• October 9, 2011

For Cough and Nasal Congestion "I took one Mucinex DM at 11 am, and coughing and mucus flow was reduced significantly, although accompanied by dry mouth. Yesterday at noon, I would have given it 10/10. However, I took one capsule at 8 pm and had severe insomnia and could not fall asleep until 8 the next morning."

• Can...
• March 16, 2019

For Cough and Nasal Congestion "I took this for some relief of nasal and chest congestion. Let me warn you, do not take it, as within a half hour my heart was racing and I was jittery and anxious. On top of it, it made me sick to my stomach and I feel like someone is sitting on my chest. I can’t quench my thirst, no matter how much water I drink. I hope this feeling doesn’t last the entire 12 hours. This is horrible. I will never take this again, and this should be removed from the market."

• So...
• Taken for less than 1 month
• December 30, 2017

For Cough and Nasal Congestion "I took one around 7:30 at night, and I’ve probably slept a few hours. I already have bad anxiety and a panic disorder, so this just pushed my anxiety through the roof. My nose feels so much better, but having this feeling is not worth it at all. I have the jitters, heart racing, and almost full panic attack. For others with this problem, I don’t recommend taking it at night and just be super cautious during the day. I’ll be staring at the wall for the next couple of hours, waiting for this to pass."

• Ste...
• Taken for less than 1 month
• June 25, 2024

For Cough and Nasal Congestion "Helps with nasal congestion so I can breathe. The problem is it also keeps me awake. I may as well be on speed. No jitters or heart racing, but it definitely keeps me wide awake for the full 12 hours. Not sure what to do, this is one of the few medicines that works to relieve bad nasal congestion. Bad nasal congestion keeps me up at night, but so does this. My choice is to either be awake with stuffiness or awake due to the medicine. A catch-22 if there ever was one. It's very effective, but the side effect is a downside - particularly when you're sick and need sleep. 9 for effectiveness and I subtract 1 for the side effect. Would give it a 10 if it worked as well as it does without keeping me awake."

• nut...
• February 20, 2013

For Cough and Nasal Congestion "Works great on my sinus pressure/cold. Now I can breathe, no more stuffy nose or runny nose. Had no problem sleeping, but it did give me a severe headache-so now trying half the recommended dose. Got immediate relief, just waiting to see if it will still give me a headache."

• Sin...
• February 3, 2012

For Cough and Nasal Congestion "Mucinex D works wonders for congestion and coughs. I took this in the evening around 9:00, though, and it's now 6:00 in the morning, and I have not slept a wink. I would recommend taking this as early as possible."

• Eri...
• January 5, 2018

For Cough and Nasal Congestion "I confess that the price on this one gave me a bit of sticker shock. But after two days of little sleep with a stuffy nose from a cold... well, desperate times. The pills are large - something to take into consideration - but these work amazingly well! The presence of pseudoephedrine makes these difficult to find; you can't order them online, and you have to show a license to get your hands on them in the store. But they're worth the trouble. The first night I took them, I slept all night. It did give me heart palpitations, due to the pseudoephedrine, a stimulant, but in my case, that's a side effect I was willing to live with. I hate to spend money (these cost us $32), but the great results made me a believer in this case!"

• Sin...
• March 2, 2011

For Cough and Nasal Congestion "I am a long-time sinus sufferer. Mucinex is a godsend. Mucinex-D works fabulously for the morning and all-day relief. For bed, I just take Mucinex (without the D) so that I don't have the stimulant effect of the pseudoephedrine running through me. Works like a charm to get some sleep. Do not like generic versions. They don't work like the brand-name Mucinex does. Expensive, but so worth every cent!"

• Unh...
• April 21, 2017

For Cough and Nasal Congestion "This is my second day of using Mucinex. At this point, I'm not sure why my doctor recommended it. I never did have congestion, just a sore throat. Anyway, I'll not take it anymore, it's 1:00 a.m., I'm totally exhausted and cannot sleep. Last night it was 12:30 or so, and I finally went to sleep. I'm used to falling asleep around 9:30. I do take sleeping pills, and I just took my dose of those, hope it puts me to sleep. Otherwise, how do you make it through the next day? I just read the label, guess I missed before that it can cause sleeplessness, or I wouldn't have taken it at all. It's expensive and another drug going in the garbage can!"

• Anonymous
• December 16, 2010

For Cough and Nasal Congestion "I love this medicine. I am getting ready to go to Hawaii, and sure enough, I started to get a cold before the trip. I took this, along with drinking Emergen-C, and it dried up my nose, and my cough was gone within 3 hours, and I have yet to cough again. Only downside (and this could be because I'm only 105 lbs), but it did give me the runs. Fair trade considering I can now breathe without coughing on everyone."

• 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."

• Anonymous
• May 17, 2011

For Cough and Nasal Congestion "This medicine is somewhat effective for me. I made the mistake of taking it before bed (I wish my doctor had warned me) and experienced a racing heart/was up most of the night. It did clear my sinuses, but not for 12 hours straight. I woke up at around 6 am (having taken the medicine around 11 pm) with my nose entirely clogged again. I'm going to take Mucinex D again today, but not at night. I guess I'll just have to suffer tonight rather than be a complete insomniac."