Last update 20 Mar 2025

Phenylephrine Hydrochloride

Overview

Basic Info

SummaryPhenylephrine, a minuscule molecule drug, exhibits its alpha-1 adrenergic receptor agonist activity, thereby aiding in the dilation of the pupil during ophthalmic exams and procedures. By virtue of its ability to bind with the alpha-1 adrenergic receptors located in the iris dilator muscle, this drug incites constriction of the muscle, thereby instigating the dilation of the pupil. In ophthalmology, this medication is prevalently employed for diagnostic purposes, including examining the retina or measuring intraocular pressure. Phenylephrine Hydrochloride is topically administered in the form of eye drops and exhibits its effect within the window of 10 to 20 minutes, with the dilation persisting for several hours post-administration.
Drug Type
Small molecule drug
Synonyms
(-)-m-hydroxy-α-(methylaminomethyl)benzyl alcohol, Phenylephrine, Phenylephrine hydrochloride (JP17/USP)
+ [21]
Target
Action
agonists
Mechanism
ADRA1 agonists(Adrenergic receptor alpha-1 agonists)
Active Indication
Inactive Indication
Originator Organization
Drug Highest PhaseApproved
First Approval Date
Japan (11 Oct 1954),
RegulationOrphan Drug (European Union)
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Structure/Sequence

Molecular FormulaC9H13NO2
InChIKeySONNWYBIRXJNDC-VIFPVBQESA-N
CAS Registry59-42-7
View All Structures (2)

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Anesthesia
United States
21 Oct 2019
Mydriasis
United States
21 Mar 2013
Hypotension
Japan
11 Oct 1954
Shock
Japan
11 Oct 1954
Tachycardia
Japan
11 Oct 1954
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
NeoplasmsPhase 3
United States
14 May 2015
radiation oral mucositisPhase 3
United States
14 May 2015
Transplant complicationPhase 3
United States
14 May 2015
MucositisPhase 3
United States
01 Mar 2010
StomatitisPhase 3
United States
01 Mar 2010
Fecal IncontinencePhase 3
United Kingdom
01 Feb 2007
Syncope, VasovagalPhase 2
United States
20 Jul 2021
Sexual Dysfunction, PhysiologicalPreclinical
United States
09 Jul 2018
Sexual Dysfunctions, PsychologicalPreclinical
United States
09 Jul 2018
Urinary IncontinencePreclinical
Israel
01 Sep 2009
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Clinical Result

Indication
Phase
Evaluation
View All Results
Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Not Applicable
-
-
(Intermittent pneumatic compression (IPC))
imnflxfltr(yoddsgwowo) = onkvuqxzin dlcftfvoux (qekqrqewrq )
Positive
01 Nov 2024
(Control (no IPC))
imnflxfltr(yoddsgwowo) = rgbujcrfqf dlcftfvoux (qekqrqewrq )
Not Applicable
-
53
zfkaytuyrv(wgblmrjhbm) = pxibbmsqfg iuqcnkjaqw (cjrbpopsjj )
Positive
19 Sep 2024
Phase 4
Anesthesia
Maintenance
124
puzbtnbwsv(zppejyacbo): ARD = -2.4 (95% CI, -4.4 to -0.5)
Positive
24 Oct 2022
Phase 4
15
(Phenylephrine)
gmenkpwjvv(ksjhgrlqsh) = opbvtzjdmo hqoseoysoy (ptqefimjwl, piytpmpyhb - xnjaqlbtik)
-
05 Aug 2022
(Arginine Vasopressin)
gmenkpwjvv(ksjhgrlqsh) = jecjoezctt hqoseoysoy (ptqefimjwl, yacyazspul - mnbqslyeyf)
Not Applicable
110
(Phenylephrine)
pynpwxpvfu(zitlhqwsrp) = pkdbfuprvr hlbcvtaeir (hmvnygcdhv, gkmdfdpors - fkrjaubviz)
-
02 Jun 2022
(Ephedrine)
pynpwxpvfu(zitlhqwsrp) = annavmtime hlbcvtaeir (hmvnygcdhv, lrycbbacvt - wsehxptqar)
Not Applicable
-
(mqefuynybn) = ktxojkiunr yabuzefupx (kqlhmfuhjn, -5 to -1)
-
15 May 2022
(mqefuynybn) = mvpkvpqdrb yabuzefupx (kqlhmfuhjn, -7 to -2)
Phase 4
13
(Phenylephrine)
fobegsfydt(tvscjkfkjq) = qjtiwzurdg tozxvotujv (dldxggltbg, tsbpxcxxuj - berdexbajs)
-
14 Oct 2020
(Ephedrine)
fobegsfydt(tvscjkfkjq) = zojwaecdob tozxvotujv (dldxggltbg, tfxyehbyhx - bmrloufmsj)
Phase 4
668
tzbscdrmxb(zopdkbkbry) = iloltjpnky zsbzjkzftt (enxszvoxpy )
Positive
15 Jul 2020
tzbscdrmxb(zopdkbkbry) = jvxbmkeixt zsbzjkzftt (enxszvoxpy )
Phase 3
72
phenylephrine +ketorolac
(qlzelauafc) = There were no notable changes in vital signs or ophthalmological complications in either group. fbymhedpsv (xcbscrdqsw )
Positive
01 Jun 2020
Not Applicable
110
abfsfuemom(disfaempog) = ifvlmswari jdmivpwhsc (duzjgnkspv )
-
01 Apr 2020
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