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User Reviews for Guaifenesin

Also known as: Mucinex, Humibid, Robafen, Tussin Expectorant, Mucinex Maximum Strength, Breonesin, Guiatuss, Altarussin, Benylin E, Fenesin, Anti-Tuss, Siltuss DAS, GG-Cen, Family Meltus Chesty Coughs, Benadryl Chesty Forte, G Bid, Ganidin NR, Humibid Pediatric, Organ-1 NR, Mucinex Children's Chest Congestion, Guaibid-LA, Aquamist, Amibid LA, Mucobid-LA, Guaifenex LA, Fenex-LA, Rompe Pecho EX, Scot-Tussin Expectorant, Guaifenesin LA, Humavent LA, Guiacough, GG 200 NR, Glytuss, Diabetic Expectorant, Allfen Jr, Genatuss, Guaiatussin, Gua-SR, Humigen LA, Altorant, Duratuss G, Robitussin Mucus + Chest Congestion, Diabetic Tuss, Guaifenex G Calmylin Expectorant Guiadrine G-1200 Siltussin DAS-NA Balminil Expectorant Drituss G Beechams Veno's for Kids Chesty Cough Junior Meltus Colour and Sugar Free Expectorant Help I Have Chest Congestion Xpect Bidex-400 Humibid E Fenesin IR Hill's Balsam Chesty Cough Junior Meltus Chesty Coughs with Catarrh Beechams Veno's Expectorant Lemsip Cough Chesty Dristan Chesty Cough Dristan Chesty Cough Guaiphenesin 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 7.1 out of 10 from a total of 253 ratings on Drugs.com. 65% of reviewers reported a positive effect, while 23% reported a negative effect.

Condition Avg. Rating Reviews Compare
Fibromyalgia  Off-label
8.4
99 reviews 21 medications
Cough  
5.8
84 reviews 797 medications
Bronchitis  
6.8
66 reviews 288 medications
Bronchiectasis  
3.3
4 reviews 152 medications
Summary of Guaifenesin reviews 7.1 253 reviews

Reviews may be edited to correct grammar/spelling, or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest are not published.

Reviews for Guaifenesin

nascar18 · Taken for less than 1 month November 22, 2013

Mucinex (guaifenesin) for Bronchitis: “Mucinex is great and it works well but whatever you do, DO NOT take it on an empty stomach. I did this morning and as the day went by I kept feeling worse and worse. When I finally got the chance to eat something, my stomach was so upset that it just came right back up. Again, its a great medication but eat something before taking it.”

8 / 10
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Poodle Mom · Taken for 1 to 6 months October 5, 2014

Mucinex (guaifenesin) for Fibromyalgia: “Unbelievable is all I can say! I could not have doubted this more, but after suffering night after night with horrendous back pain, I sat up at 3am searching the internet for some herb or vitamin I had dismissed the 100 other times I had sat up on the night in pain. I thought it sounded ridiculous, but no more so than anything else I had tried. I started with 1200mg and have remained on that and I feel better than I have in years. I urge you to try this. It has changed my life!”

9 / 10
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robert-sydney February 24, 2012

Mucinex (guaifenesin) for Fibromyalgia: “Diagnosed with severe fibromyalgia, mayofascial pain, IBS. Went through nerve studies etc and muscle biopsy. Finally told I had severe fibromyalgia. The problem was that it was progressing every month. I became suicidal due to pain levels, couldn't walk 10 meters. It saves lives. I might not have the fibromyalgia type you have but this medicine saved my life and if you think spending $30 to try it is a waste then it means you did not suffer enough. I lost it all, wife, home, job but a simple flu tablet got me back everything and it even took my eczema, IBS I had for years. God bless those who came up with that theory. Theory might be wrong but it does the job.”

10 / 10
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rhymingartist · Taken for 10 years or more June 6, 2020

For Fibromyalgia: “I have been on the Guaifenesin Protocol that reverses Fibromyalgia and the Chronic Fatigue that goes along with it for 13 years. I am 76, and I can accomplish more at this age than I did at 63. My Fibro pain and the feeling that I was exhausted all the time has been gone for years. Two little over the counter pills, taken twelve hours apart, reversed all my symptoms. This does not happen overnight. The paperback book, written by Dr. Paul St. Amand, "What Your Doctor May Not Tell You About Fibromyalgia" explained it all. My doctor approved of the protocol with a wave of his hand. "Give it a try," he said. "It can't hurt you." So I did, and, over time, following the protocol precisely, which meant finding MY correct dose, I improved until I was completely reversed. I now have my life back.”

10 / 10
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Rocky · Taken for less than 1 month June 11, 2019

For Fibromyalgia: “I had been experiencing whole body pain for two years. My doctors kept trying to put me on different medications - gabapentin, melodocam, naproxen - you name it, I’ve tried it. However all of them gave me unwanted side effects. So I researched and read everything I could find ran out natural ways to manage or reduce pain. I stumbled upon The Guaifenesin protocol for fibromyalgia and was intrigued. However, it seemed so restrictive that I decided it wasn’t for me. But I felt like it wouldn’t hurt to just buy the Mucinex tablets 600mg (2x a day) extended release. Literally, the first day my pain levels went from a 9 to a 5. Currently it’s barely noticeable now. Also, no side effects!!! I’ve been on it for a month. I also take magnesium citrate supplements as well. You have nothing to lose but to try it and see if it works for you.”

10 / 10
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lemonlocks · Taken for 2 to 5 years August 15, 2016

For Fibromyalgia: “I have been using guaifenesin as a treatment for the reversal of fibromyalgia symptoms for 4 years. As an RN, I was very skeptical since there aren't any positive studies done for this purpose. I had suffered with fibromyalgia symptoms for 12 years, was nearly bed bound, and was researching electric scooters. After relocating to Hawaii, I met an RN who leads a fibromyalgia support group focusing on utilization of guaifenesin. Having nothing to lose by trying this treatment, and trusting a fellow RN, I began the protocol. 4 years later I'm walking a mile daily, cleaning my own home, engaging in multiple craft activities (ceramics, sewing, painting, and gardening), swimming, and enjoying life again. This has given my life back.”

10 / 10
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Nina5621 May 10, 2016

Mucinex (guaifenesin) for Bronchitis: “This medicine really helped me out with a bronchitis attack. I have been suffering with acute bronchitis for about 3 weeks now, after taking all of the medication that my doctor prescribed I still have no relief. After reading reviews I decided to give Mucinex (liquid) a try, to my surprise it really helps to bring up all of that sticky mucus that was stuck in my lungs. Although I'm not fully well yet, I can see better days ahead!”

10 / 10
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Frequently asked questions

Stacie Jung June 20, 2013

Mucinex (guaifenesin) for Fibromyalgia: “I have been in terrible and increasing pain since last September. I have had hip and spinal X-rays and MRIs and they show slight arthritis and little else. I had an injection of cortisone in my left hip and now the doctor is recommending a shot to my spine. The pain is so bad, that lately I've been reduced to tears. I went from surfing in August to hobbling in September and the doctors treat me like I'm this no activity couch potato who deserves to feel horrible because I'm getting old and I need to lose weight. Sure I do, I've gained 30 pounds in the last year because I can barely walk. Well, I tried Guaifenesin this afternoon because and it made me fall asleep, and when I woke up, THE PAIN WAS GONE!”

10 / 10
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LivingWithFibro April 18, 2012

Mucinex (guaifenesin) for Fibromyalgia: “I was diagnosed at 20 and put on muscle relaxers and pain killers that did nothing more than immobilize me. I read about the guaifenesin treatment and asked my doctor for a prescription. I started at 1200mg extended release 2x daily. FINALLY I had my life back. When Mucinex took away the generic option, I dropped to 600mg 2x daily, and it still does the trick. 12 years later, I still swear by it. I have occasional set backs, but I always bounce back within a week.”

10 / 10
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DelvaDoll · Taken for less than 1 month September 2, 2015

Mucinex (guaifenesin) for Bronchitis: “It works good, you will feel the congestion breaking down. It does make you cough more to loosen up mucus and yes you probably will stay up a bit a night. I took the pill not liquid. Have to say I was surprised.”

7 / 10
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Melody11728 July 5, 2014

Mucinex (guaifenesin) for Fibromyalgia: “With moderate to severe fibromyalgia for 12 years I lost my career and lived in fear of having a life to avoid a flare-up. I have tried every antidepressant, serotonin uptake inhibitor, pain medicine, anti-inflammatory.... you all know, with major side effects that only contributed to fibromyalgia symptoms. March 2014 I got a cold and used Mucinex for the first time and could not believe the relief. I have prayed for someone to invent a NEW MEDICINE for fibromyalgia that would work and it turned out this OLD MEDICINE has returned my life to me. Thank God for Mucinex!”

10 / 10
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Cheryjoy · Taken for less than 1 month April 12, 2019

Mucinex (guaifenesin) for Bronchitis: “I’m a second-grade teacher and have had an exhausting case of bronchitis for four months now. Many of those loveable little petri dishes I teach have been sick too. This week I’m much worse with very painful throat and ear pain and congestion. Went to dr. yesterday feeling like I’ll do anything to get better! So amoxicillin for ear and throat, two shots of I don’t know what in the backside, Mucinex for the thick nasty phlegm, and Flonase, Claritin, and Zyrtec to alternate. Best thing—- the cough is finally actually bringing the stuff up about 6 hours after taking a 12-hour Mucinex. And lots draining out the nose too. I’ve never tried it before but it’s sure working. All that yuk is finally getting out of there!”

10 / 10
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komwill September 16, 2014

Mucinex (guaifenesin) for Fibromyalgia: “I was sick with sinus infection and was taking Mucinex. I thought to myself, I am going to be extra sore since I am home from work and resting more than usual because I was not feeling well. I was shocked when after taking Mucinex for a few days, my pain was gone. No more tender spots. My arms had been really bad lately and when I touched them, they were no longer sore. I had no idea of the connection at the time. I googled Mucinex and was amazed that I found studies that something for a cold could possibly help with fibromyalgia. I stopped taking it and the symptoms came back so I started taking it again. I take 2-3 400mg a day. I call this experience accidentally on purpose. It may not work for everyone as we're all different but its worth trying.”

9 / 10
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wildbreeze December 20, 2011

Mucinex (guaifenesin) for Fibromyalgia: “I posted almost 2 months ago. I've been taking Mucinex since then for the fibromyalgia pain (I am not a creature of habit and have a hard time remembering to take any medication but I don't miss it!) I can sincerely say that it continues to work - progressively better - and I find it hard to believe it myself! Pain in my right shoulder that I've had for over 15 years has quietly disappeared. I no longer sleep with a pillow between my knees, and I have so much less pain bending over, etc. I also don't have to clear my throat constantly in the morning like I did so it works great on mucus too. I really didn't expect the results to continue. If you have pain like me, give it a try. No bad effects. I hope it works for you.”

10 / 10
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BJ November 1, 2019

For Fibromyalgia: “I have been disabled with Fibromyalgia and Interstitial Cystitis for over 20 years. In May 2019, I caught a bad cold. I took Guiafenesin to help with the congestion. One night, during that time, I woke up and found that all my Fibromyalgia/Interstitial Cystitis pain was gone! The pain reprieve was short lived, but it gave me enough time to search online and find out about Guiafenesin and Fibromyalgia. I read the members reviews, here at drug.com, and saw other people were getting results with Guiafenesin and Fibromyalgia. I have now been on the Guiafenesin protocol for 6 months and both my Fibromyalgia and Interstitial Cystitis symptoms have dramatically improved. The Guiafenesin protocol is not a quick fix though. There is more to the protocol than just taking Guiafenesin. If you have Fibromyalgia and want to give the Guiafenesin protocol a try, get the book "What Your Doctor May Not Tell You About Fibromyalgia," by R. Paul St. Amand, MD, and Claudia Craig Marek.”

10 / 10
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Turned180 · Taken for 5 to 10 years March 8, 2021

For Fibromyalgia: “Guaifenesin saved my life! I follow Dr St Amand’s protocol precisely, salicylic acid free. I was mostly bedridden, everything hurt from washing my hair to getting dressed. IBS symptoms got so severe that it didn’t matter what I ate, it hurt. As I started the protocol with guaifenesin, my symptoms slowly started to disappear and I started having more good days than bad. It no longer hurts to eat! It no longer hurts to get hugs! I can open jars again! I work 30-50 hours a week and survive without crashing! Every doctor should be prescribing this protocol! Guaifenesin has zero side effects for me, and I am very sensitive to the efficacy of drugs, alcohol, sugar, caffeine, and pain and allergy medications.”

10 / 10
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gloe September 19, 2014

Mucinex (guaifenesin) for Fibromyalgia: “Couldn't believe it could be true but it was. Newly diagnosed with fibromyalgia. I read about Mucinex for fibromyalgia; read that it is a muscle relaxant and enhances the analgesic effect of aspirin and Tylenol; and is enhanced by magnesium. Went out and bought the 800 mg with 2 aspirin and some magnesium citrate, and it worked! The pain just seems to dissolve away. I continue to take 800mg (2, 400mg immediate release tablets) with aspirin and magnesium, three times a day, or 1200 mg twice a day. ”

8 / 10
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AmitPAmin June 15, 2014

Mucinex (guaifenesin) for Fibromyalgia: “I've tried dozens of therapies and medicines. Mucinex does better than them all. Since taking it, my pain levels have gone down by 90%. Mucinex doesn't work for everyone. But it's cheap and over the counter. What's the harm in trying? I wish a doctor or website had suggested I try it - would have saved me years of pain.”

10 / 10
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St. George August 15, 2016

For Fibromyalgia: “I had excessive join pain, gastrointestinal issues, and had severe depression. After a 2 year Guaifenesin program and avoiding 100% of all Salicylates for the past 13 years, I am 100% Free of ALL Fibromyalgia symptoms for over 13 years. At any time in the past 13 years, however, if I so much as consume a Mojito, chew mint gum, use mint toothpaste, or use ANY salicylate, my joint pains reappear within 20 minutes. Be sure to ALWAYS check EVERY Product that you consume or use on your scalp or skin. Use Laundry Detergents and dryer sheets with No Dyes and No Perfumes. Generic products with No Dyes and No Perfumes are perfect. Several "Hypoallergenic" eye make-up brands are NOT hypoallergenic any longer and have caused rashes.”

6 / 10
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Racquetballdoctor November 3, 2016

For Fibromyalgia: “I had intense hip pains and muscle tightness for months and started to use Mucinex because of my cold. After taking it, I kept telling my wife that my hip is feeling better and better. I researched for ingredient in Mucinex and found guaifenesin. There were so many FM comments in the blog that I thought I was reading a wrong section. Been taking 600 mg of guaifenesin three times a day and my pains have subsided about 95% in just 2 days! I don't like taking any kind of drugs and will experiment with a lower dosage and what works for me. I actually stopped taking my dosage one day and the hip pain started to present itself again. Back on guaifenesin and pain subsided dramatically!”

10 / 10
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smoore002 April 15, 2008

Mucinex (guaifenesin) for Fibromyalgia: “I never thought that an expectorant used to treat coughs could be this effective for Fibromyalgia pain. I am a pre-med student and when I heard about the possibility of Mucinex(Guaifenesin) being able to relieve pain caused by Fibromyalgia I decided to try it. It has worked better than NSAID'S (Ibuprofen, Aleve, Celebrex) for me. 400mg works great (600mg if using the extended release tablets.)”

9 / 10
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SaraJF · Taken for less than 1 month March 4, 2014

Mucinex (guaifenesin) for Bronchitis: “I took Mucinex for a bad case of bronchitis. It worked very well and I was finally able to stop coughing and start breathing again. The only problem was that it interfered with my sleep. I was awake most of the night and was not tired the next day. I had to quit taking it.”

6 / 10
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Anonymous October 9, 2011

Mucinex (guaifenesin) for Fibromyalgia: “My neurologist has tried me on several medicines, but I work in the OR that the Cymbalta and Lexapro do make the pain manageable but I think all the side effects are with me. Mentally I felt like I was floating. I have done the amitriptyline, Neurontin, Buspar, Ultram, Flexeril. But when I read Mucinex I thought you are kidding me. The next morning I went and got some Maximum Strength 12 hr relief and also tried the liquid but I prefer the tablets. Try it I promise it works. Sounds crazy but it does.”

10 / 10
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Activetraveler · Taken for 6 months to 1 year October 18, 2020

For Fibromyalgia: “As strange as this may sound, I have found that good old Mucinex, that is, active ingredient *guaifenesin,* really helps amazingly with my stiff and achy hip/haunch muscles, tendons, and ligaments. I suffered a very minor injury years ago, but the area around it became stiffer and more painful over time. I noticed once when I had a bad cold and was taking the usual cold remedies that my hip area felt suddenly better. I narrowed it down to the effect of guaifenesin. Since then, I have found that many fibromyalgia sufferers also report an amazingly beneficial effect of guaifenesin on their stiff muscles! It really does work, is sold over-the-counter, and I notice no side effects. They make 600mg tabs, but even 1/2 tab per day really helps me. I hope it helps you too!!”

9 / 10
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Grammy · Taken for less than 1 month December 2, 2018

Mucinex (guaifenesin) for Bronchitis: “My dry cough turned into a wet (mucous) cough, later diagnosed as bronchitis. I was getting very little sleep, and then saw a commercial about Mucinex DM for coughs which is the guaifenesin and Dextromethorphan. I tried it, one tablet every 12 hours. In that first 12 hours, I got relief enabling me to finally sleep well all night. I had no problem with it affecting my sleep like some others experienced in these reviews, but hey may have taken the one with pseudoephridrine which keeps you awake. What I have noticed is that the cough is suppressed until you get close to the 12-hour period, then the cough begins. But it's productive, and mucous is expelled much easier, and then it's over. Then it's time for another pill. I highly recommend this product for coughs.”

9 / 10
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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.