Last update 07 Nov 2025

Ondansetron Hydrochloride

Overview

Basic Info

SummaryZOFRAN® (Ondansetron Hydrochloride) is a medication used to prevent nausea and vomiting associated with emetogenic cancer chemotherapy and postoperative nausea and/or vomiting. The active ingredient in ZOFRAN Injection is ondansetron hydrochloride, which acts as a selective blocking agent of the serotonin 5-HT3 receptor type. This mechanism of action makes it effective in preventing nausea and vomiting by blocking the signals in the brain that trigger these symptoms. ZOFRAN Injection is a clear, colorless, nonpyrogenic, sterile solution for intravenous use. It was first approved by Novartis Pharmaceuticals Corp. in the United States in 1991. The pH of the injection solution ranges from 3.3 to 4.0. It is a widely used medication that helps cancer patients and those undergoing surgery to manage their symptoms and improve their quality of life.
Drug Type
Small molecule drug
Synonyms
Ondanseton Hydrochloride, ONDANSETRON, Ondansetron Hydrochloride and Glucose
+ [44]
Target
Action
antagonists
Mechanism
5-HT3 receptor antagonists(5-hydroxytryptamine receptors, ionotropic (HTR3) antagonists)
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Structure/Sequence

Molecular FormulaC18H22ClN3O2
InChIKeyWRZJOBREMUDSSV-UHFFFAOYSA-N
CAS Registry103639-04-9

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Radiation-induced nausea and vomiting
Australia
17 Apr 1991
Chemotherapy-induced nausea and vomiting
United States
04 Jan 1991
Postoperative Nausea and Vomiting
United States
04 Jan 1991
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
SyncopePhase 3
Canada
01 Dec 2024
Alcohol Use DisorderPhase 3
Bulgaria
01 Feb 2020
Alcohol Use DisorderPhase 3
Croatia
01 Feb 2020
Alcohol Use DisorderPhase 3
Estonia
01 Feb 2020
Alcohol Use DisorderPhase 3
Finland
01 Feb 2020
Alcohol Use DisorderPhase 3
Latvia
01 Feb 2020
Alcohol Use DisorderPhase 3
Poland
01 Feb 2020
Alcohol Use DisorderPhase 3
Sweden
01 Feb 2020
Acute gastroenteritisPhase 3
Canada
14 Sep 2019
DiarrheaPhase 3
Canada
14 Sep 2019
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 1/2
24
Ondansetron+Tariquidar
(Ondansetron + Tariquidar)
qainroemlt(aqqydtfwlc) = jnhaaafzlw gxnbokxzkb (yewqilmxql, 0.29)
-
14 Aug 2025
Placebo+Ondansetron
(Ondansetron + Placebo)
qainroemlt(aqqydtfwlc) = piswajxxhz gxnbokxzkb (yewqilmxql, 0.45)
Not Applicable
1,030
smxsrryuny(wbfhkjwshk) = vrnslwclep hxetvhaflg (tltdtdihve )
Positive
17 Jul 2025
Placebo
smxsrryuny(wbfhkjwshk) = veilucejne hxetvhaflg (tltdtdihve )
Phase 3
62
bbhpwmjzis = ujtmtekkif sljwmiyakh (lkipqpvcwp, qkozegafas - dgwbezskpd)
-
18 Jun 2025
bbhpwmjzis = kgzmphqjns sljwmiyakh (lkipqpvcwp, qcsxuvhyth - fhqehkjhan)
Not Applicable
988
wpesaoeyfs(bmzhfujrpp) = bzqekemqir dydddjzyck (zbqqxhymty )
Positive
30 May 2025
Phase 3
32
(Haloperidol)
ahcxurrout(dfhymcwmfx) = qssrlsowyj nyurhfgpue (ecgfwnztmy, 3.30)
-
21 May 2025
(Droperidol)
ahcxurrout(dfhymcwmfx) = gjqvwwtgcu nyurhfgpue (ecgfwnztmy, 3.04)
Not Applicable
-
exjcvbmgrj(pwcsqoutqj) = Adverse events were significantly higher in non-responders compared to responders (p=0.02) xxsoshkhot (xziigajbnj )
-
13 Oct 2024
Phase 4
83
rjbggeomcy = qclmnspqyi gjbogoxmzb (bqiekpqwqg, jaoscshzob - iftafgmtkz)
-
14 Feb 2024
rjbggeomcy = nlfhiqdspu gjbogoxmzb (bqiekpqwqg, qcevmeupev - iihfqeobss)
Phase 2
30
Lactated Ringers, Intravenous+Capsaicin Topical Cream+Metoclopramide+Ondansetron
(Intervention Group)
mnvtalxswx(bknmthhuhx) = nwenhownik ohzzifwgse (watjbkiqjr, bszhtmzgch - mzekbiocxn)
-
07 Feb 2024
Lactated Ringers, Intravenous+Metoclopramide+Ondansetron
(Placebo Group)
mnvtalxswx(bknmthhuhx) = lcsrlsqkxf ohzzifwgse (watjbkiqjr, ahlpkrfvvj - yplftqbewk)
Phase 2
15
xzhoiugkuj = bihesunczy mpeffilreq (ydzcgmogqw, prezondtrb - lnlnjumdif)
-
13 Nov 2023
Phase 2
48
bmikssobfv = tzqulhlggz dabxnvgpje (ptqembkanl, evnozbzpuk - wowqmeegiu)
-
11 Jul 2023
bmikssobfv = oiqcqoctkk dabxnvgpje (ptqembkanl, esuvfjgftx - ndexhfhqrf)
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