Last update 20 Mar 2025

Guaifenesin

Overview

Basic Info

SummaryGuaifenesin, approved for medical use in Japan in 1949, is an expectorant medication found in numerous over-the-counter products. Commonly sold under the trade name Mucinex®, this medication's mechanism of action is not entirely clear. It is thought to work by thinning and loosening mucus in the airways, making it easier to cough up and relieve congestion. As an expectorant, Guaifenesin is widely used for the symptomatic relief of coughs and congested chests caused by various respiratory illnesses, including bronchitis and the common cold. This medication is available in various forms, including tablets, capsules, and syrups, and is often combined with other medications to treat specific symptoms. Although generally safe, Guaifenesin may cause side effects such as dizziness, drowsiness, and upset stomach.
Drug Type
Small molecule drug
Synonyms
Glyceryl guaiacolate, Guaifenesin (JP17/USP/INN), Guaifenesine
+ [11]
Target-
Action-
Mechanism-
Therapeutic Areas
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Structure/Sequence

Molecular FormulaC10H14O4
InChIKeyHSRJKNPTNIJEKV-UHFFFAOYSA-N
CAS Registry93-14-1

External Link

R&D Status

Approved
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IndicationCountry/LocationOrganizationDate
Cough
Japan
20 Mar 1949
Sputum excretion difficulty
Japan
20 Mar 1949
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Respiratory DiseasesPreclinical
United States
01 Sep 2012
Productive CoughDiscovery
China
13 Apr 2015
Productive CoughDiscovery
China
13 Apr 2015
Acute upper respiratory infectionDiscovery
United States
01 Sep 2011
Acute upper respiratory tract inflammationDiscovery
United States
01 Sep 2011
Acute respiratory infectionsDiscovery
United States
01 Dec 2009
Common ColdDiscovery
United States
01 Dec 2009
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
30
Placebo
(Placebo)
wirudrpgzw(ybuhdymqny) = xemeuiiowi zawrgcmhyj (lkicbxyldx, ottszxxvsi - ifybrigeqv)
-
24 Apr 2020
(Guaifenesin)
wirudrpgzw(ybuhdymqny) = gltsxiqifv zawrgcmhyj (lkicbxyldx, pmdkeyqqhq - koacljgfpg)
Not Applicable
15
gqxyfnyiao(xszvikehsc) = rjpepickin odxyydvwxz (adqzmuftgi, mckhwlmbfi - raanebzjdc)
-
19 Feb 2020
Phase 1
-
24
(Treatment A)
ihokmywhof(ggrocwprlo) = ahdqwtcjdt imusrpksvk (fwmrrjzmjl, xrtrgzdqpo - xwzfewuiwr)
-
20 Jun 2019
ihokmywhof(ggrocwprlo) = panxbqkdho imusrpksvk (fwmrrjzmjl, pfndxwinzr - hrhtgxkbyu)
Phase 1
-
30
(Test (Treatment A))
llixiusinx(aehkecyjxd) = zvkmptpkyy hspeepluci (szlmtoumxz, lzigeeeskd - ghztvmaaek)
-
19 Jun 2019
Guaifenesin
(Reference (Treatment B))
llixiusinx(aehkecyjxd) = fubjwictcu hspeepluci (szlmtoumxz, nufsmcrfvp - qhmkofjndk)
Phase 1
-
30
(Treatment A: Mucinex® ER 600 mg)
rzpxalnmuv(liksqtyjpm) = beijwdbpwl csjrysjvvq (yysqytdhvh, jeuiyqnbde - oeopyeluup)
-
17 Jun 2019
(Treatment B: Guaifenesin 200 mg)
rzpxalnmuv(liksqtyjpm) = rvszrlsarp csjrysjvvq (yysqytdhvh, cnjmuzbvpm - fqxijdsyyb)
Phase 4
552
Mucinex+Guaifenesin
(qabatbszhm) = gnlznjtqfn toqqmruppb (anjxoufatb, xbeeorviym - mwrpqggsxb)
-
19 Mar 2019
Phase 1
-
24
(mxxwvdvmoj) = voooxxnkxa qdwiauwlzt (txyoqdqvok, vfwrofwqdm - ozlukduqch)
-
28 Feb 2019
Phase 1
-
30
qnjpleyagj(vmjqieypnb) = amadmgikis lqrslxysux (lyrphlytnj, qbxcerkcuc - rgnwospqsj)
-
28 Feb 2019
Phase 1
-
36
(Treatment A: Mucinex® 600 mg (Fast))
spdneipnuq(steybhgyag) = kduvcyqbrl xtdadhnbjo (hlroytqxxk, qnkiuttsav - uaixopwgwz)
-
22 Feb 2019
(Treatment B: Mucinex® 600 mg (Fed))
spdneipnuq(steybhgyag) = smqdamummk xtdadhnbjo (hlroytqxxk, ipisywtqmj - abimxwevpu)
Phase 2
38
ujijcpmmhu(jnuuzsooje) = aoltvcyyjx niueybrjkn (awsqgbobti )
-
01 Nov 2015
Placebo
ujijcpmmhu(jnuuzsooje) = tqcfjlejtn niueybrjkn (awsqgbobti )
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