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Amodiaquine

Published: July 26, 2026Updated: August 24, 2026

Amodiaquine is an antimalarial medication used primarily to treat infections caused by Plasmodium falciparum and other Plasmodium species. It belongs to the aminoquinoline class of drugs and has been utilized both for treatment and prevention of malaria, often in combination with other antimalarial agents.

Quick summary

Amodiaquine is an antimalarial drug used to treat and prevent malaria caused by Plasmodium parasites.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 24, 2026Editorial policy

Key facts at a glance

ATC
P01BA06
RxNorm
720
Generic
Amodiaquine
Class
atc-p01
Brands
—
Availability
rx
Lactation
unknown
Routes
oral
Forms
tablet
Regions
US, EU, CN, JP
Monitoring
—

This page is for informational purposes only.

Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.

Dosage and administration

adult (standard)tablet
Usual dose
500mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)tablet
Usual dose
250mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)tablet
Usual dose
400mg daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Single dose that may cause serious toxicity
Chronic overdose: cumulative hepatotoxicity with repeated dosing above therapeutic levels
Immediate actions
gastric lavage within 1-2 hours, activated charcoal, supportive care, cardiac monitoring
Antidote
no specific antidote available(supportive care is mainstay of treatment)
Poison Control: 1-800-222-1222

Special Populations

7 groups
✗

pregnancy

first trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

avoid use during pregnancy unless benefits outweigh risks

Monitor

regular fetal monitoring

Use of this medication in this population requires careful consideration of risks and benefits.

⚠

pregnancy

second third trimester
caution
FDA Category
C
Dose Adjustment

use under medical supervision

Key Recommendations

may be used when benefits outweigh risks in second and third trimester for malaria treatment

Monitor

regular prenatal monitoring

Use with caution and monitor for adverse effects.

⚠

lactation

breastfeeding
caution
FDA Category
C
Dose Adjustment

no specific adjustment

Key Recommendations

use with caution - drug excreted in breast milk

Monitor

monitor infant for adverse effects

Use with caution and monitor for adverse effects.

⚠

pediatric_age

children under 5
caution
FDA Category
C
Dose Adjustment

weight-based dosing required

Key Recommendations

use under medical supervision - appropriate for pediatric malaria treatment

Monitor

close monitoring of weight and response

Use with caution and monitor for adverse effects.

⚠

geriatric

elderly
caution
FDA Category
C
Dose Adjustment

consider renal and hepatic function

Key Recommendations

use with caution due to potential age-related organ function decline

Monitor

monitor renal and hepatic function

Use with caution and monitor for adverse effects.

⚠

renal_impairment

severe renal impairment
caution
FDA Category
C
Dose Adjustment

dose reduction recommended

Key Recommendations

use with caution - consider dose reduction in severe impairment

Monitor

monitor renal function and drug levels if available

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

severe hepatic impairment
caution
FDA Category
C
Dose Adjustment

use with caution - dose adjustment may be needed

Key Recommendations

use under close medical supervision in hepatic impairment

Monitor

monitor hepatic function and clinical response

Use with caution and monitor for adverse effects.

Statistics and clinical data

prescribingFDA
2023

Commonly prescribed since

Value:1950s

General prescribing information for antimalarial use

drug_classWHO
2023

Drug class

Value:Antimalarial

Drug class information

usageMedical guidelines
2023

Common uses

Value:Treatment of malaria

Common therapeutic uses

Amodiaquine is used for the treatment of uncomplicated malaria caused by Plasmodium falciparum and other Plasmodium species. It has also been employed for malaria prophylaxis in certain regions, though its use is often reserved for combination therapies to improve efficacy and reduce resistance development.

Amodiaquine interferes with the growth and reproduction of malaria parasites within red blood cells. It accumulates in the acidic food vacuoles of the parasite, where it inhibits heme polymerase enzyme, leading to toxic accumulation of heme and eventual parasite death.

Amodiaquine may cause serious side effects including hepatotoxicity, blood disorders, and gastrointestinal symptoms. It should be used under medical supervision, and resistance has been reported in some areas. This medication is often administered in fixed-dose combinations with other antimalarials to enhance effectiveness and minimize resistance.

Contraindications

Conditions and patient states where this medication should be avoided or used with caution.

Do not use (1)

ABSOLUTEhypersensitivity

Known allergy to this medication or its components

Use caution (1)

RELATIVEpregnancy

Consult healthcare provider for benefits vs risks assessment

Official drug label

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 24, 2026. · Read our editorial policy