AMANTADINE HYDROCHLORIDE

Details

Stereochemistry	ACHIRAL
Molecular Formula	C10H17N.ClH
Molecular Weight	187.71
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

Cl.NC12CC3CC(CC(C3)C1)C2

InChI

InChIKey=WOLHOYHSEKDWQH-UHFFFAOYSA-N

InChI=1S/C10H17N.ClH/c11-10-4-7-1-8(5-10)3-9(2-7)6-10;/h7-9H,1-6,11H2;1H

HIDE SMILES / InChI

Molecular Formula	C10H17N
Molecular Weight	151.2487
Charge	0
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Molecular Formula	ClH
Molecular Weight	36.461
Charge	0
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Description
Sources: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=d6e6e111-38da-43a2-b6c4-15e69b720495

Amantadine hydrochloride has pharmacological actions as both an anti-Parkinson and an antiviral drug. The mechanism by which amantadine exerts its antiviral activity is not clearly understood. It appears to mainly prevent the release of infectious viral nucleic acid into the host cell by interfering with the function of the transmembrane domain of the viral M2 protein. In certain cases, amantadine is also known to prevent virus assembly during virus replication. It does not appear to interfere with the immunogenicity of inactivated influenza A virus vaccine. The mechanism of action of amantadine in the treatment of Parkinson's disease and drug-induced extrapyramidal reactions is not known. Data from earlier animal studies suggest that amantadine hydrochloride may have direct and indirect effects on dopamine neurons. More recent studies have demonstrated that amantadine is a weak, non-competitive NMDA receptor antagonist (K1 = 10µM). Although amantadine has not been shown to possess direct anticholinergic activity in animal studies, clinically, it exhibits anticholinergic-like side effects such as dry mouth, urinary retention, and constipation. Amantadine was approved by the FDA in 1966 as a prophylactic agent against Asian influenza, and eventually received approval for the treatment of influenza virus A in adults. In 1969, it was also discovered by accident to help reduce symptoms of Parkinson's disease, drug-induced extrapyramidal syndromes, and akathisia.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Glutamate [NMDA] receptor 125 Target ID: CHEMBL2094124 Sources: https://www.ncbi.nlm.nih.gov/pubmed/15800186	Antagonist 2849		10.0 µM [Ki]
Matrix protein 2 5 Target ID: CHEMBL1932894 Sources: https://www.ncbi.nlm.nih.gov/pubmed/18669647	Inhibitor 8504

Conditions

Condition	Modality	Targets	Highest Phase	Product
Influenza A virus infection 9 Sources: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=d6e6e111-38da-43a2-b6c4-15e69b720495	Primary		Approved 8583	MANTADINE HYDROCHLORIDE Approved Use Amantadine Hydrochloride Capsules, USP are indicated for the prophylaxis and treatment of signs and symptoms of infection caused by various strains of influenza A virus. Amantadine Hydrochloride Capsules, USP are also indicated in the treatment of parkinsonism and drug-induced extrapyramidal reactions. Launch Date 1987
Parkinson's disease 232 Sources: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=d6e6e111-38da-43a2-b6c4-15e69b720495	Primary		Approved 8583	MANTADINE HYDROCHLORIDE Approved Use Amantadine Hydrochloride Capsules, USP are indicated for the prophylaxis and treatment of signs and symptoms of infection caused by various strains of influenza A virus. Amantadine Hydrochloride Capsules, USP are also indicated in the treatment of parkinsonism and drug-induced extrapyramidal reactions. Launch Date 1987

C_max

Value	Dose	Co-administered	Analyte	Population
0.24 μg/mL DRUG LABEL https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/016023s041,018101s016lbl.pdf	100 mg single, oral dose: 100 mg route of administration: Oral experiment type: SINGLE co-administered:		AMANTADINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN
636.2 ng/mL EXPERIMENT https://www.ncbi.nlm.nih.gov/pubmed/18074029	100 mg 2 times / day multiple, oral dose: 100 mg route of administration: Oral experiment type: MULTIPLE co-administered:		AMANTADINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

AUC

Value	Dose	Co-administered	Analyte	Population
6413.6 ng × h/mL EXPERIMENT https://www.ncbi.nlm.nih.gov/pubmed/18074029	100 mg 2 times / day multiple, oral dose: 100 mg route of administration: Oral experiment type: MULTIPLE co-administered:		AMANTADINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

T_1/2

Value	Dose	Co-administered	Analyte	Population
14.7 h EXPERIMENT https://www.ncbi.nlm.nih.gov/pubmed/18074029	100 mg 2 times / day multiple, oral dose: 100 mg route of administration: Oral experiment type: MULTIPLE co-administered:		AMANTADINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

F_unbound

Value	Dose	Co-administered	Analyte	Population
33% DRUG LABEL https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/016023s041,018101s016lbl.pdf	100 mg single, oral dose: 100 mg route of administration: Oral experiment type: SINGLE co-administered:		AMANTADINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
substrate 1946 inhibitor 2252	substrate 1193 inhibitor 2438	substrate 1388 inhibitor 2507

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
CYP1A2 2153 CYP2B6 926 CYP2C19 2057 CYP2C8 1057 CYP2E1 1060 CYP3A5 136 OCT1 620 OCT2 779 OCT3 159 MATE1 415 MATE2 267	CYP1A2 1197 CYP2B6 776 CYP2C19 1119 CYP2C8 810 CYP2E1 729 CYP3A5 446 OCT2 434

Drug as perpetrator

Target	Modality	Activity
CYP1A2 2333	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2B6 1160	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2C19 2141	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2C8 1117	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2C9 2497	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2D6 2546	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2E1 1146	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP3A4 2633	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP3A5 201	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
MATE1 416	inhibitor 4027 Sources: https://pubmed.ncbi.nlm.nih.gov/19164462/	yes [Ki 111.8 uM]
MATE2 267	inhibitor 4027 Sources: https://pubmed.ncbi.nlm.nih.gov/19164462/	yes [Ki 1167 uM]
OCT1 656	inhibitor 4027 Sources: https://pubmed.ncbi.nlm.nih.gov/16581093/	yes [Ki 236 uM]
OCT2 782	inhibitor 4027 Sources: https://pubmed.ncbi.nlm.nih.gov/16581093/	yes [Ki 284 uM]
OCT3 161	inhibitor 4027 Sources: https://pubmed.ncbi.nlm.nih.gov/16581093/	yes [Ki >1000 uM]

Drug as victim

Target	Modality	Activity
CYP1A2 1197	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2B6 776	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2C19 1119	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2C8 810	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2C9 1193	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2D6 1388	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP2E1 729	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP3A4 1946	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
CYP3A5 446	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/208944Orig1s000ClinPharmR.pdf#page=10 Page: 10.0	unlikely
OCT2 434	substrate 4014 Sources: https://pubmed.ncbi.nlm.nih.gov/9687576/	yes

Sourcing

Vendor/Aggregator	ID	URL
ChEBI	CHEBI:2618	https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:2618
ChemicalBook	CB3259991	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB3259991
eMolecules	27515804	https://www.emolecules.com/cgi-bin/more?vid=27515804
eMolecules	476391	https://www.emolecules.com/cgi-bin/more?vid=476391
MolPort	MolPort-001-661-700	https://www.molport.com/shop/molecule-link/MolPort-001-661-700
MolPort	MolPort-020-000-111	https://www.molport.com/shop/molecule-link/MolPort-020-000-111
ZINC	ZINC000000968256	http://zinc15.docking.org/substances/ZINC000000968256

PubMed

Title	Date	PubMed
19F NMR detection of the complex between amantadine and the receptor portion of the influenza A M2 ion channel in DPC micelles.	2007-07-15	17502147
Modulation of L-DOPA-induced abnormal involuntary movements by clinically tested compounds: further validation of the rat dyskinesia model.	2007-04-16	17306893
Pharmacological characterization of psychosis-like behavior in the MPTP-lesioned nonhuman primate model of Parkinson's disease.	2006-11	16960862
Identification of genes associated with cisplatin resistance in human oral squamous cell carcinoma cell line.	2006-09-15	16978399
Behavioral effects of aminoadamantane class NMDA receptor antagonists on schedule-induced alcohol and self-administration of water in mice.	2006-09	16835770
[Cytosine demethylation in the tyrosine hydroxylase gene promoter in the hypothalamus cells of the rat brain under the action of an aminoadamantane derivative Ladasten].	2006-07	16915929
The pharmacology of aminoadamantane nitrates.	2006-07	16842096
Platinum(IV) complex with adamantylamine overcomes intrinsic resistance to cisplatin in ovarian cancer cells.	2006-07	16364413
Interferon signal transduction of biphenyl dimethyl dicarboxylate/amantadine and anti-HBV activity in HepG2 2.2.15.	2006-05	16756086
Simultaneous liquid chromatographic assay of amantadine and its four related compounds in phosphate-buffered saline using 4-fluoro-7-nitro-2,1,3-benzoxadiazole as a fluorescent derivatization reagent.	2006-05	16161183
Hiccups associated with dopamine agonists in Parkinson disease.	2006-03-14	16534128
Amantadine-induced livedo reticularis: a report of two cases.	2006-03	16573266
A novel soluble mimic of the glycolipid, globotriaosyl ceramide inhibits HIV infection.	2006-02-14	16439866
Comparative anti-tumor efficacy of two orally administered platinum(IV) drugs in nude mice bearing human tumor xenografts.	2006-02	16428939
Glutamate receptors in neuroinflammatory demyelinating disease.	2006	16883070
Combined blockade of AMPA and NMDA glutamate receptors reduces levodopa-induced motor complications in animal models of PD.	2005-12	16203001
Amantadine reduces the duration of levodopa-induced dyskinesia: a randomized, double-blind, placebo-controlled study.	2005-11	16154788
Low-dose levodopa therapy in Japanese patients with Parkinson's disease: a retrospective study.	2005-09	16258207
Determination of serum amantadine by liquid chromatography-tandem mass spectrometry.	2005-09	15913590
Site-isolated porphyrin catalysts in imprinted polymers.	2005-08-19	15977282
Preclinical anti-tumor activity of a new oral platinum(IV) drug LA-12.	2005-07	15930894
Pharmacological validation of a mouse model of l-DOPA-induced dyskinesia.	2005-07	15899244
Prediction of genotoxicity of chemical compounds by statistical learning methods.	2005-06	15962942
The potential anti-hBV effect of amantadine in combination with ursodeoxycholic acid and biphenyl dimethyl dicarboxylate in hepG2 2.2.15 cells.	2005-04	15918519
Improved neurological function after Amantadine treatment in two patients with brain injury.	2005-04	15769570
High effectiveness of platinum(IV) complex with adamantylamine in overcoming resistance to cisplatin and suppressing proliferation of ovarian cancer cells in vitro.	2005-02-01	15652229
Prevention of influenza in the general population.	2004-11-09	15534315
Adverse effects of amantadine and oseltamivir used during respiratory outbreaks in a center for developmentally disabled adults.	2004-11	15566030
Amantadine for levodopa-induced choreic dyskinesia in compound heterozygotes for GCH1 mutations.	2004-10	15389992
Peginterferon alpha-2b plus ribavirin with or without amantadine [correction of amantidine] for the treatment of non-responders to standard interferon and ribavirin.	2004-08	15456080
Bitterness evaluation of medicines for pediatric use by a taste sensor.	2004-08	15304986
Long term motor complications of levodopa: clinical features, mechanisms, and management strategies.	2004-08	15299154
Levetiracetam potentiates the antidyskinetic action of amantadine in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-lesioned primate model of Parkinson's disease.	2004-07	15004218
[Comparative study of neurophysiological effects of adamantane derivatives in the experimental parkinsonism model].	2004-06-11	15188753
New platinum(IV) complex with adamantylamine ligand as a promising anti-cancer drug: comparison of in vitro cytotoxic potential towards A2780/cisR cisplatin-resistant cell line within homologous series of platinum(IV) complexes.	2004-06	15166629
Action of celgosivir (6 O-butanoyl castanospermine) against the pestivirus BVDV: implications for the treatment of hepatitis C.	2004-05	15266896
Treatment of interferon non-responsive chronic hepatitis C with triple therapy with interferon, ribavirin, and amantidine can be encouraging.	2004-03	14960538
Platinum(IV) complex with adamantylamine as nonleaving amine group: synthesis, characterization, and in vitro antitumor activity against a panel of cisplatin-resistant cancer cell lines.	2004-01-29	14736257
Liquid chromatographic determination of 1-adamantanamine and 2-adamantanamine in human plasma after pre-column derivatization with o-phthalaldehyde and 1-thio-beta-D-glucose.	2004-01-25	14670755
Effects of perioperative oral amantadine on postoperative pain and morphine consumption in patients after radical prostatectomy: results of a preliminary study.	2004-01	14695734
Motor-learning impairment by amantadine in healthy volunteers.	2004-01	14532914
Heterocyclic rimantadine analogues with antiviral activity.	2003-12-01	14642592
Livedo reticularis induced by amantadine.	2003-09	14511008
[Cortico-basal degeneration: the rare form of tau protein disease].	2003	15098333
Treatment of experimental pneumocystosis: review of 7 years of experience and development of a new system for classifying antimicrobial drugs.	1992-09	1416885
Activities of antifolate, antiviral, and other drugs in an immunosuppressed rat model of Pneumocystis carinii pneumonia.	1992-09	1416884
A trigger for Tourette's syndrome.	1992-03	1564044
Amantadine as N-methyl-D-aspartic acid receptor antagonist: new possibilities for therapeutic applications?	1992	1320514
Differential inhibitory effects of sulfated polysaccharides and polymers on the replication of various myxoviruses and retroviruses, depending on the composition of the target amino acid sequences of the viral envelope glycoproteins.	1991-12	1725692
Neurotoxicity of chlorpromazine and modulation by amantadine as a function of mouse strain.	1991	1745440

Patents

Sample Use Guides

In Vivo Use Guide

Uncomplicated Influenza A Virus Illness: Adult: 200 mg; two 100 mg capsules as a single daily dose. The daily dosage may be split into one capsule of 100 mg twice a day. In persons 65 years of age or older, the daily dosage is 100 mg. Parkinsonism: Adult: is 100 mg twice a day when used alone. Amantadine Hydrochloride Capsules have an onset of action usually within 48 hours. The initial dose is 100 mg daily for patients with serious associated medical illnesses or who are receiving high doses of other antiparkinson drugs. After one to several weeks at 100 mg once daily, the dose may be increased to 100 mg twice daily, if necessary.

Route of Administration: Oral

In Vitro Use Guide

Amantadine markedly inhibited the proliferation of HepG2 and SMMC‑7721 cells in a dose‑ and time‑dependent manner and arrested the cell cycle at the G0/G1 phase

Substance Class	Chemical Created by `admin` on `Mon Mar 31 17:50:58 GMT 2025` Edited by `admin` on `Mon Mar 31 17:50:58 GMT 2025`
Record UNII	M6Q1EO9TD0
Record Status	`Validated (UNII)`
Record Version

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Name

Type

Language

MANTADIX

Preferred Name

English

AMANTADINE HYDROCHLORIDE

Official Name

English

AMANTADINE HYDROCHLORIDE [MI]

Common Name

English

ADAMANTANAMINE HYDROCHLORIDE

Systematic Name

English

SYMMETREL

Brand Name

English

AMANTADINE HYDROCHLORIDE [ORANGE BOOK]

Common Name

English

AMANTADINE HYDROCHLORIDE [EP MONOGRAPH]

Common Name

English

AMANTADINE HYDROCHLORIDE [USP-RS]

Common Name

English

AMANTADINE HYDROCHLORIDE [VANDF]

Common Name

English

OSMOLEX

Brand Name

English

AMANTADINE HYDROCHLORIDE [MART.]

Common Name

English

SYMADINE

Brand Name

English

Amantadine hydrochloride [WHO-DD]

Common Name

English

AMANTADINE HCL

Common Name

English

NSC-83653

Code

English

AMANTADINE HYDROCHLORIDE [JAN]

Common Name

English

TRICYCLO(3.3.1.1(SUP 3,7))DECAN-1-AMINE, HYDROCHLORIDE

Common Name

English

AMANTADINE HYDROCHLORIDE [USAN]

Common Name

English

EXP-105-1

Code

English

AMANTADINE HYDROCHLORIDE [USP MONOGRAPH]

Common Name

English

Classification Tree Code System Code

FDA ORPHAN DRUG

413213