Skip to Content

User Reviews for Guaifenesin to treat Cough

Also known as: Mucinex, Robafen, Humibid, Breonesin, GG 200 NR, Tussin Expectorant, Dristan Chesty Cough Guaiphenesin, Guiatuss, Diabetic Tuss, Balminil Expectorant, Organ-1 NR, Altarussin, Diabetic Expectorant, Benylin E, Bidex-400, Mucinex Maximum Strength, Benadryl Chesty Forte, G Bid, Ganidin NR, Humibid Pediatric, Mucinex Children's Chest Congestion, Guaibid-LA, Aquamist, Amibid LA, Mucobid-LA, Guaifenex LA, Fenex-LA, Fenesin, Rompe Pecho EX, Scot-Tussin Expectorant, Guaifenesin LA, Humavent LA, Guiacough, Glytuss, Anti-Tuss, Allfen Jr, Genatuss, Guaiatussin, Siltuss DAS, Gua-SR, Humigen LA, Altorant, Duratuss G, Robitussin Mucus + Chest Congestion, Guaifenex G, GG-Cen, Calmylin Expectorant Guiadrine G-1200 Siltussin DAS-NA Drituss G Beechams Veno's for Kids Chesty Cough Junior Meltus Colour and Sugar Free Expectorant Help I Have Chest Congestion Xpect Humibid E Fenesin IR Hill's Balsam Chesty Cough Junior Meltus Chesty Coughs with Catarrh Family Meltus Chesty Coughs Beechams Veno's Expectorant Lemsip Cough Chesty Dristan Chesty Cough Mucinex for Kids Guaifen NR Buckley's Chest Congestion TabTussin 400 Siltussin DAS Diabetic Tussin Mucus Relief Refenesen Chest Congestion Relief Bronchoril Hytuss Mucaplex Tussin Mucus + Chest Congestion Air Power Diabetic Tussin Chest Congestion …show all brand names

Guaifenesin has an average rating of 5.8 out of 10 from a total of 76 ratings for the treatment of Cough. 45% of reviewers reported a positive effect, while 34% reported a negative effect.

Guaifenesin Rating Summary

5.8/10 average rating

76 ratings from 83 user reviews.

Compare all 416 medications used in the treatment of Cough.

10
22%
9
13%
8
9%
7
8%
6
3%
5
8%
4
3%
3
3%
2
7%
1
25%

Reviews for Guaifenesin

jimbob 97683 October 15, 2014

Mucinex (guaifenesin): “After all the treatments I had from the doctor, nothing really suppressed the cough, which I have had for years. After taking Mucinex, my cough and the associated Phlegm has almost disappeared. I am a 74 yr old male but my side effects seem to be the opposite to others. i.e. I am doing more sleeping than normal, at any time night or day, but thank heavens for the cessation of cough.”

9 / 10
Was this helpful?YesNo
Linda · Taken for less than 1 month February 7, 2020

Mucinex (guaifenesin): “At first I thought this was making me worse because of thinning my mucus but I read someone's comment on here who said to drink a lot of water (64 oz) and I tried that and it definitely made a difference. If you don't drink a lot of water with this you are not going to clear out the mucus.”

10 / 10
Was this helpful?YesNo
EricfromNC · Taken for less than 1 month November 13, 2015

Mucinex (guaifenesin): “One of the best thing for coughs. The Mucinex DX green does a great job of thinning mucus as well as stopping cough. The blue is good for colds and allergies without cough. I prefer the 600 mg tables. For me, they wear off after five hours. Take with a lot of water. The more water the better it works. 16ozs every 90 minutes makes it work the best.”

10 / 10
Was this helpful?YesNo
Sickgranny June 9, 2013

Mucinex (guaifenesin): “I had runny nose, blocked ears, headache, sore throat with mucus, Its great! I took one pill and saw relief, so 4 hours later I took the second one. Now I am wide awake. It's almost 4 am. Take it earlier.”

10 / 10
Was this helpful?YesNo
Captain Jerry May 15, 2016

Mucinex (guaifenesin): “I was suffering from a severe virus-caused sore throat with terrible coughing. My PCP advised me to take Mucinex but at substantially greater dosage than the package recommends. I did so for about 3-4 weeks. The medication did help relieve my coughing, but it interfered so badly with my sleep that I had to discontinue taking it. I notice that other people have experienced sleep problems with Mucinex. There should be a warning about this on the package label.”

6 / 10
Was this helpful?YesNo
Anonymous · Taken for less than 1 month October 23, 2016

Mucinex (guaifenesin): “I had a bad chest infection and even after potent antibiotics took care of the infection I had a rattling cough and low grade fever My doctor Rxd Mucinex and I could not believe how well it broke up the congestion in my chest, made it easier for me to cough it all up As a result I finally got rid of the low grade fever also Finally, Guafenesin has been around forever as a remedy for fibromyalgia”

9 / 10
Was this helpful?YesNo
Matteo B · Taken for less than 1 month October 13, 2017

Mucinex (guaifenesin): “I had a Cough, runny nose, allergies, Then lungs got congested and major wheezing. Normally I will just take cetirizine when its allergy season, but this time my chest was in play. I looked all over the house for my bottle of Mucinex. Couldn't find it. I suffered for a couple of days with a nasty cough and gook in my lungs trying to sleep and make it through the day. After realizing I left it at our 2nd home I headed for the store. Bought the 1200mg time release (1st time), usually, I would get the 600mg. Within an hour the wheezing stopped. I am writing this comment because it works fabulously for me. I have told many of my friends and it has worked for them. Not one complaint. When I have chest congestion I will always take Mucinex. It truly works. For those that say it doesn't work, I find that hard to believe.”

10 / 10
Was this helpful?YesNo

Frequently asked questions

HaleyR October 28, 2015

Mucinex (guaifenesin): “I swear by this stuff. (I'm talking about Musinex's version of TheraFlu, it's fairly new-maybe last year it was put on the shelves) I have tried nearly every cold remedy in the history of the world from teas to drugs to more wholesome remedies but nothing has actually ever worked. This stuff actually reduces the duration of my colds and the severity of colds within the first day. Drink it in the morning and once before bed and you should be golden in 2 days. I'm more of that summertime cold-getter and it works like magic every time.”

10 / 10
Was this helpful?YesNo
Anonymous November 7, 2011

Mucinex (guaifenesin): “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.”

1 / 10
Was this helpful?YesNo
sutraquio · Taken for less than 1 month May 3, 2013

Mucinex (guaifenesin): “Actually I was using Mucinex to control a nagging night time cough. Although I had extreme pain in my ankles and legs EVERY SINGLE DAY, I never dreamed that Mucinex would have any effect as to helping that. I took a dose of the Mucinex FastMax just before I went to bed and WOW, no cough AND no leg pain at all that night, at last I was pain free! I know it had to be the Mucinex because absolutely nothing else had made a difference! I will keep some on hand to use from now on. I hope this helps someone else also. Thank you.”

10 / 10
Was this helpful?YesNo
sy91 · Taken for less than 1 month January 2, 2016

Mucinex (guaifenesin): “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”

1 / 10
Was this helpful?YesNo
Mattie138 March 24, 2015

Mucinex (guaifenesin): “I have been taking Mucinex for about 5 months.... one in a.m. and another at 8pm. I took it because I could not swallow any phlegm and it was difficult coughing it up. My esophagus muscles are very weak and the phlegm would block my air waves. Recently I have developed severe dry mouth as a side affect. I stopped the p.m. pill, and use biotene gel, toothpaste and mouth rinse.... still no relief. If anyone has had this problem, please let me know.”

8 / 10
Was this helpful?YesNo
CongestedKelley December 23, 2016

Mucinex (guaifenesin): “The doctor gave me a sample of this when I complained of congestion. I took two tablets, which may have been too much since I developed the runs. I'll try it again, but only one tablet. Or, I may just get Robitussin since the doctor said that Mucinex is a magnified version of Robitussin.”

5 / 10
Was this helpful?YesNo
krobin · Taken for less than 1 month April 14, 2018

Mucinex Maximum Strength (guaifenesin): “I take an MAOI so I can't use decongestants. I take Mucinex when I start getting a cold or flu. It relieves my cough and congestion, keeps my lungs clear. Yes, it gives me a runny nose but that's what it's supposed to do, thin the mucous so you can get rid of it. My coughs are fewer and those I have are productive. Drinking a lot of water of other liquid is essential. I suspect some of the negative reviews are from folks who didn't drink enough. Personally I would recommend giving it a try, with lots of fluids.”

10 / 10
Was this helpful?YesNo
Anonymous August 10, 2009

Mucinex (guaifenesin): “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)!”

8 / 10
Was this helpful?YesNo
CJ · Taken for 1 to 6 months November 15, 2018

Mucinex (guaifenesin): “I have had a chronic cough for about 20 yrs. After many tests for asthma, GERD, other lung problems was diagnoised with Neurogenic cough. In other words, they don't know what's causing it. I've tried Amitryptiline and a couple other scripts didn't do much and had horrible side effects. I started using the Mucinex12 hr time release. They calm my cough pretty good. I've been taking them this time about a month and had my bp checked yesterday by a nurse and it was 181/98. We checked it twice with her machine and checked it twice with mine. All four readings were in the 180's/90-100+. Now just a couple months ago my reading was 122/78. That is more normal for me. The Mucinex is one of two changes I have made in my life within the last two months. The other was starting the Keto Diet Sept 24th... Has anyone else experienced problems with their bp after taking Mucinex DX? Maybe I'm not drinking enough water. I don't know, but I'm definitely concerned...”

8 / 10
Was this helpful?YesNo
H · Taken for less than 1 month February 12, 2020

Mucinex (guaifenesin): “This has to be the worse cough medicine ever it actually made my cough worse. Switch to Robitussin and IMMEDIATELY noticed the difference in relief. I'm not one to review but this one needed to go down in the books.... Don't take Mucinex...”

1 / 10
Was this helpful?YesNo
Eartheditor · Taken for less than 1 month February 4, 2018

Mucinex (guaifenesin): “Worked well after I started guzzling water. It did nothing before that. Thing is, nowhere on the liquid Musinex DM packaging does it say to ensure to drink lots of water. If water is essential to its effectiveness, I’d think the company would want folks to get plenty hydrated. This method combined with an inhaler to calm coughing spasms and I feel progress in kicking my flu remnants. Good luck.”

Was this helpful?YesNo
Puppyloveg · Taken for less than 1 month May 16, 2016

Mucinex (guaifenesin): “I took this attempting to get rid of a cough and chest congestion. I am a 105lb 30 year old female. I took one pill yesterday and felt a little better. That was a half does 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.”

5 / 10
Was this helpful?YesNo
Jojo · Taken for 6 months to 1 year January 13, 2020

Mucinex (guaifenesin): “I use the Mucinex liquid and I think it works great. I had it as a prescription for my last cold and this time I got it myself. I also got Alka Seltzer thinking that would work. After 3 days of feeling like poo I took the Mucinex and slept the best I had in three days. I highly recommend this to anyone. I'm only taking it at night because it does make me sleepy. Other than that I have no problems with this medicine and it's the best thing I've ever taken for colds.”

10 / 10
Was this helpful?YesNo
Otto_S May 10, 2009

“I had Asthma diagnosis for 3 years. I was taking drugs like Flonase, Advair and Antihistamines almost continuously. After I found guaifenesin 3 years ago it got rid off all asthma symptoms. I am not taking any asthma medications any more, only guaifenesin.”

10 / 10
Was this helpful?YesNo
zelta January 4, 2017

Mucinex Maximum Strength (guaifenesin): “Have COPD and am taking this for mucus and cough every 4 hours. Can't swallow pill so taking liquid. The taste is so strong it sometimes makes me cough forever. Can a small amount of water be added to dose?”

9 / 10
Was this helpful?YesNo
Ryan October 28, 2019

“A Doctor told me to take this med guaifenesin for my upper respiratory infection and my goodness did it make me sick I’m nauseous, dizzy, and just really nervous ... I think I am going to go back to my doc and break his nose”

1 / 10
Was this helpful?YesNo
Grateful in Fremont March 4, 2012

Mucinex (guaifenesin): “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.”

7 / 10
Was this helpful?YesNo
Anonymous · Taken for 6 months to 1 year October 10, 2017

Mucinex (guaifenesin): “I have taken Mucinex for many years with no ill effects, but during this latest bout with chest congestion, when I took it , each of the three times, I experienced horrible, horrible nightmares. My adult daughter had a similar experience when taking it a few months ago. Was this a new "batch" of ingredients or were alternatives used? I have no idea what might have caused this reaction, but I am very wary of trying it again.”

Was this helpful?YesNo

This information is not intended to endorse any particular medication. While these reviews may be helpful, they are not a substitute for the expertise, knowledge and judgement of healthcare professionals.

Learn more about Cough

Drugs.com Health Center

Mayo Clinic Reference