AMIODARONE

Details

Stereochemistry	ACHIRAL
Molecular Formula	C25H29I2NO3
Molecular Weight	645.3116
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

CCCCC1=C(C(=O)C2=CC(I)=C(OCCN(CC)CC)C(I)=C2)C3=C(O1)C=CC=C3

InChI

InChIKey=IYIKLHRQXLHMJQ-UHFFFAOYSA-N

InChI=1S/C25H29I2NO3/c1-4-7-11-22-23(18-10-8-9-12-21(18)31-22)24(29)17-15-19(26)25(20(27)16-17)30-14-13-28(5-2)6-3/h8-10,12,15-16H,4-7,11,13-14H2,1-3H3

HIDE SMILES / InChI

Molecular Formula	C25H29I2NO3
Molecular Weight	645.3116
Charge	0
Count

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

Description
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/022325s002lbl.pdf
Curator's Comment: description was created based on several sources, including: https://www.drugs.com/pro/amiodarone.html | DOI: 10.1007/978-1-4613-2827-8_26

Amiodarone is an antiarrhythmic with mainly class III properties, but it possesses electrophysiologic characteristics of all four Vaughan Williams classes. Like class I drugs, amiodarone blocks sodium channels at rapid pacing frequencies, and like class II drugs, amiodarone exerts a noncompetitive antisympathetic action. In addition to blocking sodium channels, amiodarone blocks myocardial potassium channels, which contributes to slowing of conduction and prolongation of refractoriness. It is indicated for initiation of treatment and prophylaxis of frequently recurring ventricular fibrillation and hemodynamically unstable ventricular tachycardia in patients refractory to other therapy. The most common adverse reactions (1-2%) leading to discontinuation of intravenous amiodarone therapy are hypotension, asystole/cardiac arrest/pulseless electrical activity, VT, and cardiogenic shock. Other important adverse reactions are, torsade de pointes (TdP), congestive heart failure, and liver function test abnormalities. Fluoroquinolones, macrolide antibiotics, and azoles are known to cause QTc prolongation. There have been reports of QTc prolongation, with or without TdP, in patients taking amiodarone when fluoroquinolones, macrolide antibiotics, or azoles were administered concomitantly. Since amiodarone is a substrate for CYP3A and CYP2C8, drugs/substances that inhibit these isoenzymes may decrease the metabolism and increase serum concentration of amiodarone.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Potency
Adrenergic receptor beta 89 Target ID: CHEMBL2094118 Sources: Collins, P. (2008) 'Mrcp 1 Pocket', p.84 Retrieved from https://books.google.ru/books?id=FbjdURJT99sC	Inhibitor 8504
HERG 99 Target ID: CHEMBL240 Sources: https://www.ncbi.nlm.nih.gov/pubmed/10208308 \| https://www.ncbi.nlm.nih.gov/pubmed/27256139	Blocker 555	9.8 µM [IC50]
Voltage-gated T-type calcium channel (guinea pig) 2 Target ID: Voltage-gated T-type calcium channel (guinea pig) Sources: https://www.ncbi.nlm.nih.gov/pubmed/1281221	Blocker 555
Voltage-gated L-type calcium channel (guinea pig) 2 Target ID: Voltage-gated L-type calcium channel (guinea pig) Sources: https://www.ncbi.nlm.nih.gov/pubmed/1281221	Blocker 555
Cytochrome P450 3A 22 Target ID: CHEMBL2364675 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/022325s002lbl.pdf	Substrate 661
Cytochrome P450 2C8 18 Target ID: CHEMBL3721 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/022325s002lbl.pdf	Substrate 661

Conditions

Condition	Modality	Targets	Highest Phase	Product
Recurring ventricular fibrillation 2 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/022325s002lbl.pdf	Primary		Approved 8583	PACERONE Approved Use Amiodarone injection is indicated for initiation of treatment and prophylaxis of frequently recurring ventricular fibrillation (VF) and hemodynamically unstable ventricular tachycardia (VT) in patients refractory to other therapy. Amiodarone also can be used to treat patients with VT/VF for whom oral amiodarone is indicated, but who are unable to take oral medication. During or after treatment with amiodarone, patients may be transferred to oral amiodarone therapy. Launch Date 1998
Ventricular tachycardia 11 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/022325s002lbl.pdf	Primary		Approved 8583	PACERONE Approved Use Amiodarone injection is indicated for initiation of treatment and prophylaxis of frequently recurring ventricular fibrillation (VF) and hemodynamically unstable ventricular tachycardia (VT) in patients refractory to other therapy. Amiodarone also can be used to treat patients with VT/VF for whom oral amiodarone is indicated, but who are unable to take oral medication. During or after treatment with amiodarone, patients may be transferred to oral amiodarone therapy [ see Dosage and Administration (2) Launch Date 1998

C_max

Value	Dose	Analyte	Population
2920 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	1.25 mg/kg single, intravenous dose: 1.25 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
7140 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	2.5 mg/kg single, intravenous dose: 2.5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
13660 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	5 mg/kg single, intravenous dose: 5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
9 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	1.25 mg/kg single, intravenous dose: 1.25 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	DESETHYLAMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
23.8 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	2.5 mg/kg single, intravenous dose: 2.5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	DESETHYLAMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
41.2 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	5 mg/kg single, intravenous dose: 5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	DESETHYLAMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
1.7 mg/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/6851030/	800 mg single, oral dose: 800 mg route of administration: Oral experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: UNKNOWN age: UNKNOWN sex: UNKNOWN food status: UNKNOWN

AUC

Value	Dose	Analyte	Population
3600 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	1.25 mg/kg single, intravenous dose: 1.25 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
8100 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	2.5 mg/kg single, intravenous dose: 2.5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
16600 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	5 mg/kg single, intravenous dose: 5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
16900 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	5 mg/kg single, intravenous dose: 5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	DESETHYLAMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN

T_1/2

Value	Dose	Analyte	Population
14.6 day EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	5 mg/kg single, intravenous dose: 5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
14.2 day EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/21052689/	5 mg/kg single, intravenous dose: 5 mg/kg route of administration: Intravenous experiment type: SINGLE co-administered:	DESETHYLAMIODARONE serum	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
4.62 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/6851030/	800 mg single, oral dose: 800 mg route of administration: Oral experiment type: SINGLE co-administered:	AMIODARONE serum	Homo sapiens population: UNKNOWN age: UNKNOWN sex: UNKNOWN food status: UNKNOWN

F_unbound

Value	Dose	Co-administered	Analyte	Population
0.023% EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3242577/	200 mg 1 times / day multiple, oral dose: 200 mg route of administration: Oral experiment type: MULTIPLE co-administered:		AMIODARONE plasma	Homo sapiens population: UNHEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
substrate 1946	inhibitor 2438	substrate 1388 inhibitor 2507	inhibitor 2217

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
CYP1A2 2153 CYP3A 227 P-gp 1741	CYP2C8 810 CYP1A1 389 CYP1A2 1197 CYP2C19 1119

Drug as perpetrator

Target	Modality	Activity	Clinical evidence
CYP2D6 2546	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/; https://pubmed.ncbi.nlm.nih.gov/15541258/	yes [IC50 15 uM]	yes (co-administration study) Comment: reversible inhibition; The area under the plasma concentration-time curve (AUC) of metoprolol increased from 767 before to 1,387 ug * hours/L after the amiodarone loading dose Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/; https://pubmed.ncbi.nlm.nih.gov/15541258/
P-gp 1932	inhibitor 4027 Sources: http://www.ncbi.nlm.nih.gov/pubmed/12499648	yes [IC50 5.48 uM]
CYP1A2 2333	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/; https://pubmed.ncbi.nlm.nih.gov/8891878/	yes [IC50 >50 uM]	yes (co-administration study) Comment: reversible inhibition; After treatment with 3 g amiodarone (phase I), this parameter (AUC of lidocaine) increased to 135.3 ± 34.6 (p = 0.016), whereas the AUC of MEGEX decreased from 19.2 ± 6.5 to 15.8 ± 8.3 μg/min/ml (p = 0.04). Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/; https://pubmed.ncbi.nlm.nih.gov/8891878/
CYP2C9 2497	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/; https://pubmed.ncbi.nlm.nih.gov/3621782/	yes [IC50 >50 uM]	yes (co-administration study) Comment: reversible inhibition; The mean warfarin AUC during the amiodarone regimen increased to 200% of the control value of anticoagulant alone, from 624 ± 59 Rg/ml-hr to 1249 ± 115 p,g/ml-hr, a significant difference Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/; https://pubmed.ncbi.nlm.nih.gov/3621782/
CYP3A 317	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/	yes [IC50 >50 uM]	yes (co-administration study) Comment: reversible inhibition; The mean warfarin AUC during the amiodarone regimen increased to 200% of the control value of anticoagulant alone, from 624 ± 59 Rg/ml-hr to 1249 ± 115 p,g/ml-hr, a significant difference Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613947/

Drug as victim

Target	Modality	Activity	Clinical evidence
CYP1A1 389	substrate 4014 Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/	yes	likely (co-administration study) Comment: CYP450 inhibitors: grapefruit juice, certain fluoroquinolone and macrolide antibiotics, azole antifungals, cimetidine, certain protease inhibitors: increased exposure of amiodarone. Avoid concomitant use. CYP450 inducers (St. John's Wort): reduced amiodarone serum levels Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/
CYP1A2 1197	substrate 4014 Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/	yes	likely (co-administration study) Comment: CYP450 inhibitors: grapefruit juice, certain fluoroquinolone and macrolide antibiotics, azole antifungals, cimetidine, certain protease inhibitors: increased exposure of amiodarone. Avoid concomitant use. CYP450 inducers (St. John's Wort): reduced amiodarone serum levels Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/
CYP2C19 1119	substrate 4014 Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/	yes	likely (co-administration study) Comment: CYP450 inhibitors: grapefruit juice, certain fluoroquinolone and macrolide antibiotics, azole antifungals, cimetidine, certain protease inhibitors: increased exposure of amiodarone. Avoid concomitant use. CYP450 inducers (St. John's Wort): reduced amiodarone serum levels Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/
CYP2C8 810	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2008/022325lbl.pdf#page=9; https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/018972s054lbl.pdf#page=6 Page: 9.0	yes	likely (co-administration study) Comment: CYP450 inhibitors: grapefruit juice, certain fluoroquinolone and macrolide antibiotics, azole antifungals, cimetidine, certain protease inhibitors: increased exposure of amiodarone. Avoid concomitant use. CYP450 inducers (St. John's Wort): reduced amiodarone serum levels Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2008/022325lbl.pdf#page=9; https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/018972s054lbl.pdf#page=6 Page: 9.0
CYP2D6 1388	substrate 4014 Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/	yes	likely (co-administration study) Comment: CYP450 inhibitors: grapefruit juice, certain fluoroquinolone and macrolide antibiotics, azole antifungals, cimetidine, certain protease inhibitors: increased exposure of amiodarone. Avoid concomitant use. CYP450 inducers (St. John's Wort): reduced amiodarone serum levels Sources: https://pubmed.ncbi.nlm.nih.gov/11038157/
CYP3A4 1946	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2008/022325lbl.pdf#page=9; https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/018972s054lbl.pdf#page=6 Page: 9.0	yes	likely (co-administration study) Comment: CYP450 inhibitors: grapefruit juice, certain fluoroquinolone and macrolide antibiotics, azole antifungals, cimetidine, certain protease inhibitors: increased exposure of amiodarone. Avoid concomitant use. CYP450 inducers (St. John's Wort): reduced amiodarone serum levels Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2008/022325lbl.pdf#page=9; https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/018972s054lbl.pdf#page=6 Page: 9.0

Tox targets

Target	Modality	Activity	Metabolite	Clinical evidence
hERG 2263	inhibitor 2237 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4959829/

Sourcing

Vendor/Aggregator	ID	URL
ChEBI	CHEBI:2663	https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:2663
ChemicalBook	CB5310616	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB5310616
eMolecules	901372	https://www.emolecules.com/cgi-bin/more?vid=901372
MolPort	MolPort-003-703-670	https://www.molport.com/shop/molecule-link/MolPort-003-703-670
ZINC	ZINC000003830212	http://zinc15.docking.org/substances/ZINC000003830212

PubMed

Title	Date	PubMed
Ocular toxicology.	1994 Dec	10172409
Bilateral anterior ischaemic optic neuropathy following amiodarone.	1998	10070533
[Severe flecainide acetate poisoning. Apropos of a case].	1999 Feb	10078349
[Amiodarone-induced bilateral optic atrophy--a case report].	1999 Jun	10412703
Early proarrhythmia during intravenous amiodarone treatment.	1999 Jun	10392400
Acetazolamide-responsive periodic ataxia induced by amiodarone.	1999 Mar	10091644
Severe intrahepatic cholestasis caused by amiodarone toxicity after withdrawal of the drug: a case report and review of the literature.	1999 Mar	10086516
Amiodarone and "primary" prevention of sudden death: critical review of a decade of clinical trials.	1999 Mar 11	10089841
Relative effectiveness of the implantable cardioverter-defibrillator and antiarrhythmic drugs in patients with varying degrees of left ventricular dysfunction who have survived malignant ventricular arrhythmias. AVID Investigators. Antiarrhythmics Versus Implantable Defibrillators.	1999 Oct	10520795
Catheter ablation of atrial flutter due to amiodarone therapy for paroxysmal atrial fibrillation.	2000 Apr	10775011
Depressed heart rate variability identifies postinfarction patients who might benefit from prophylactic treatment with amiodarone: a substudy of EMIAT (The European Myocardial Infarct Amiodarone Trial).	2000 Apr	10758969
[Amiodarone-associated optic neuropathy: an independent syndrome? Three patients with bilateral optic neuropathy].	2000 Sep	11076348
Amiodarone-related optic neuropathy.	2000 Sep-Oct	11033139
The effects of amiodarone on the thyroid.	2001 Apr	11294826
Amiodarone stimulates interleukin-6 production in cultured human thyrocytes, exerting cytotoxic effects on thyroid follicles in suspension culture.	2001 Feb	11288978
Inhibitory effects of CYP3A4 substrates and their metabolites on P-glycoprotein-mediated transport.	2001 Feb	11231118
Coronary artery revascularization in patients with sustained ventricular arrhythmias in the chronic phase of a myocardial infarction: effects on the electrophysiologic substrate and outcome.	2001 Feb	11216974
Thyroid hormone and the cardiovascular system.	2001 Feb 15	11172193
Impressive amelioration of clinical (NYHA class) and echocardiographic parameters in heart failure patients treated with amiodarone and carvedilol.	2001 Jan	11277095
Development of heart failure in bradycardic sick sinus syndrome.	2001 Jan	11214707
The frequency analysis of signal-averaged ECG of P wave as predictor of efficacy of class III antiarrhythmic drugs to maintain sinus rhythm in recurrent idiopathic atrial fibrillation.	2001 Jan	11174862
Dofetilide: a new class III antiarrhythmic agent.	2001 Jan	11173316
Amiodarone-induced hyperthyroidism.	2001 Jan 22	11176750
The role of pharmacologic treatment to prevent sudden death in the implantable cardioverter defibrillator era.	2001 Mar	11177676
[Hyperthyroidism and heart].	2001 Mar 15	11293943
Visual compatibility of amiodarone hydrochloride injection with various intravenous drugs.	2001 Mar 15	11286148

Patents

Sample Use Guides

In Vivo Use Guide

Intravenous: Initial dose: 1000 mg over the first 24 hours of therapy, delivered by the following infusion regimen: -Loading infusions: 150 mg over the first 10 minutes (15 mg/min), followed by 360 mg over the next 6 hours (1 mg/min) -Maintenance infusion: 540 mg over the remaining 18 hours (0.5 mg/min) Maintenance dose: After the first 24 hours, continue the maintenance infusion rate of 0.5 mg/min; may increase infusion rate to achieve effective arrhythmia suppression. -Supplemental infusions: 150 mg over 10 minutes (15 mg/min) for breakthrough episodes of ventricular fibrillation (VF) or hemodynamically unstable ventricular tachycardia(VT) Maximum dose: Initial infusion rate: 30 mg/min Oral: Loading dose: 800 to 1600 mg orally per day for 1 to 3 weeks (occasionally longer) until adequate arrhythmia control is achieved or if side effects become prominent, then switch to adjustment dose Adjustment dose: 600 to 800 mg orally per day for 1 month, then switch to maintenance dose Maintenance dose: 400 mg orally per day

Route of Administration: Other

In Vitro Use Guide

At concentrations ranging from 75-200 uM, amiodarone induced a significant and dose-dependent release of 51Cr in FRTL-5 cells. In the same molar concentrations, amiodarone was also cytotoxic in CHO cells. In hTF, the release of 51Cr produced by amiodarone occurred at a lower concentration (37.5 vs. 75 uM) and was significantly greater than that in FRTL-5 cells.

Substance Class	Chemical Created by `admin` on `Mon Mar 31 17:56:58 GMT 2025` Edited by `admin` on `Mon Mar 31 17:56:58 GMT 2025`
Record UNII	N3RQ532IUT
Record Status	`Validated (UNII)`
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Name

Type

Language

AMIODARONE [MART.]

Preferred Name

English

AMIODARONE

Official Name

English

AMIODARONE [MI]

Common Name

English

AMIODARONE [VANDF]

Common Name

English

AMIODARONE [USAN]

Common Name

English

2-Butyl-3-benzofuranyl 4-[2-(diethylamino)ethoxy]-3,5-diiodophenyl ketone

Systematic Name

English

Amiodarone [WHO-DD]

Common Name

English

amiodarone [INN]

Common Name

English

METHANONE, (2-BUTYL-3-BENZOFURANYL)(4-(2-(DIETHYLAMINO)ETHOXY)-3,5-DIIODOPHENYL)-

Systematic Name

English

Classification Tree Code System Code

NCI_THESAURUS

C47793