Last update 21 Jul 2025

Famotidine

Overview

Basic Info

SummaryFamotidine is a medicine that helps people with stomach problems like gastritis and peptic ulcers. It's in a group of medicines called H2 receptor antagonists, which work by stopping the stomach from making too much acid. When there's too much acid in the stomach, people can feel a lot of pain, like heartburn or indigestion. Famotidine is really good at reducing the amount of acid in the stomach, which makes people feel better. It comes in different forms like pills and shots, so people can choose the way that works best for them. Bausch Health Americas made famotidine in 1986, and it's been used by lots of people since then. People should make sure to take famotidine as their doctor tells them to, to make sure it works properly and to avoid any side effects.
Drug Type
Small molecule drug
Synonyms
(1-Amino-3-(((2-((diaminomethylene)amino)-4-thiazolyl)methyl)thio)propylidene)sulfamide, 3-(((2-((Aminoiminomethyl)amino)-4-thiazolyl)methyl)thio)-N-(aminosulfonyl)propanimidamide, 3-(((2-((Diaminomethylene)amino)-4-thiazolyl)methyl)thio)-N(sup 2)-sulfamoylpropionamidine
+ [40]
Action
antagonists
Mechanism
H2 receptor antagonists(Histamine H2 receptor antagonists)
Originator Organization
License Organization-
Drug Highest PhaseApproved
First Approval Date
United States (15 Oct 1986),
Regulation-
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Structure/Sequence

Molecular FormulaC8H15N7O2S3
InChIKeyXUFQPHANEAPEMJ-UHFFFAOYSA-N
CAS Registry76824-35-6

External Link

KEGGWikiATCDrug Bank
D00318Famotidine

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Erosive esophagitis
United States
16 Jul 2025
Ulcer of esophagus
Australia
08 Apr 2003
Acute gastritis
Japan
15 Mar 2000
Anastomotic ulcer
Japan
15 Mar 2000
Chronic gastritis
Japan
15 Mar 2000
Esophagitis, Peptic
Japan
15 Mar 2000
Hemorrhagic gastritis
Japan
15 Mar 2000
Stomach Ulcer
Japan
15 Mar 2000
Stress ulcer
Japan
15 Mar 2000
Upper gastrointestinal hemorrhage
Japan
15 Mar 2000
Gastrointestinal Hemorrhage
China
-01 Jan 1996
Gastritis
Japan
27 Dec 1988
Peptic Ulcer
Japan
10 Dec 1988
Corneal Ulcer
United States
15 Oct 1986
Duodenal Ulcer
United States
15 Oct 1986
Esophagitis
United States
15 Oct 1986
gastric ulcer benign
United States
15 Oct 1986
Gastroesophageal Reflux
United States
15 Oct 1986
Multiple Endocrine Neoplasia
United States
15 Oct 1986
Ulcer
United States
15 Oct 1986
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Non-erosive gastro-esophageal reflux diseasePhase 3
Japan
01 Sep 2005
HIV SeropositivityPhase 1-01 Jun 2008
HeartburnPhase 1-01 Aug 2006
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
5
(HRA Treatment Arm)
ncwvlrjnpm = jqbdxbabwj fmtmmribbp (viyuwckdea, bkuvaxcwky - offsedyxcv)
-
17 Jul 2025
Famotidine Placebo
(Placebo Arm)
ncwvlrjnpm = qdaqyglvyz fmtmmribbp (viyuwckdea, lcosfvgrgs - rhqzupgqhy)
Not Applicable
-
tmrbmcoemo(lkvuvckeev) = wmrsvtymgo btkrtxtchh (wakdxihkhf )
-
16 May 2025
Phase 2
72
Adjuvant RT+Nivolumab
(Single Modality De-escalation Arm (SDA))
qswizxvtxt = jwweggbezd cnxsphfyqk (ztfreurobs, jjgtcfpuzz - rtlmqaxujf)
-
06 May 2025
(Intermediate De-escalation Arm (IDA))
qswizxvtxt = sxslpntrsw cnxsphfyqk (ztfreurobs, kvdxwdptkm - jlefypuwbt)
Phase 2
80
(Famotidine)
hwrfgqkdjh(czpsxralbb) = xtsjquihoi zwqifmkppc (gbtovpskgl, ikxwzenizu - rlfzcmkoma)
-
09 Aug 2024
Placebo
(Placebo)
hwrfgqkdjh(czpsxralbb) = roxpqhvhni zwqifmkppc (gbtovpskgl, kotldosxod - mwymskendj)
Phase 2
4
(Group 1 (Study Product))
twplwtcbua = gsivqvgldx vmrcimjumq (tnjxoelbch, fwdqsixxtg - vxrxbghwjf)
-
09 Jul 2024
Placebo
(Group 2 (Reference Therapy))
twplwtcbua = byxypvoxao vmrcimjumq (tnjxoelbch, ljhdjzykfu - eaiihlzpmb)
Phase 2
1
(Treatment Group)
minazhobgm = kqbhalbhas pgyxlxzlwl (xnbfsfvbsk, kmupkluqyd - vnproysjko)
-
20 Dec 2022
Placebo
(Placebo Group)
wbohmeslam(bgwksapgnh) = jddekexipp ptjejcnvhr (zqbsqfdwpc, brsyqevuhz - tcwpxflkgt)
Phase 1
2
jnnbittrjh = iuqsubucgu pphidjscyi (qholevnslg, oacuoinowi - btvrjqxgum)
-
18 Feb 2022
Phase 4
40
(Omeprazole)
aaohshvnbb = qjgjdamfbh vojibaxsqy (ytolndbmvy, qyizsuobxo - dkohzpyknc)
-
19 Jan 2017
(Famotidine)
aaohshvnbb = sjhwrjzqjw vojibaxsqy (ytolndbmvy, kdyzqaiqgu - fwrcyqzbky)
Not Applicable
50
mnxaejlsiz(vphmcwupep) = tliuuqmblh vaaahibhwq (uzxhwdtlxr )
Positive
01 Oct 2016
Placebo
mnxaejlsiz(vphmcwupep) = xejggnwluu vaaahibhwq (uzxhwdtlxr )
Phase 2
3
(Famotidine)
ykaghywmlp = egglaccxsd mhspwdtmsj (rwbzaoeqpy, pmputwxnsd - osrzdymzls)
-
15 Dec 2015
(Pantoprazole)
ykaghywmlp = dkvejdzfuv mhspwdtmsj (rwbzaoeqpy, ewhsffyhdc - vrrgvghewi)
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