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Micafungin

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

Micafungin is an intravenous antifungal medication classified as an echinocandin that works by inhibiting fungal cell wall synthesis. It is primarily used to treat serious fungal infections caused by Candida species, including invasive candidiasis and esophageal candidiasis, as well as for preventing fungal infections in immunocompromised patients such as those undergoing stem cell transplantation.

Quick summary

Micafungin is an IV antifungal used to treat and prevent serious Candida infections in hospitalized or immunocompromised patients.

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

Key facts at a glance

ATC
J02AX05
RxNorm
325887
Generic
Micafungin
Class
atc-j02
Brands
Mycamine
Availability
rx
Lactation
unknown
Routes
—
Forms
injection
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)intravenous injection
Usual dose
100mg once daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)intravenous injection
Usual dose
1-2mg/kg once daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)intravenous injection
Usual dose
100mg once daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Doses significantly above recommended therapeutic range may cause increased risk of hepatotoxicity and gastrointestinal symptoms
Chronic overdose: Prolonged use at supratherapeutic doses may lead to cumulative hepatic toxicity
Immediate actions
Discontinue drug, supportive care, monitor hepatic and renal function, hemodialysis not effective due to high protein binding
Antidote
No specific antidote exists(Treatment is supportive and symptomatic)
Poison Control: 1-800-222-1222

Special Populations

10 groups
⚠

pregnancy

first trimester
caution
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

use only if benefits outweigh potential risks to fetus

Monitor

regular fetal monitoring

Use with caution and monitor for adverse effects.

⚠

pregnancy

second trimester
caution
FDA Category
C
Dose Adjustment

use lowest effective dose

Key Recommendations

use only if benefits outweigh potential risks

Monitor

regular fetal monitoring

Use with caution and monitor for adverse effects.

⚠

pregnancy

third trimester
caution
FDA Category
C
Dose Adjustment

use lowest effective dose

Key Recommendations

use only if benefits outweigh potential risks

Monitor

regular fetal monitoring and uterine activity monitoring

Use with caution and monitor for adverse effects.

⚠

lactation

breastfeeding
caution
FDA Category
C
Dose Adjustment

discontinue breastfeeding or avoid drug

Key Recommendations

decide whether to discontinue breastfeeding or discontinue micafungin based on importance of drug to mother

Monitor

monitor infant for signs of fungal infection

Use with caution and monitor for adverse effects.

✓

geriatric

elderly
safe
FDA Category
N
Dose Adjustment

no dosage adjustment required

Key Recommendations

standard dosing, consider comorbidities and concomitant medications

Monitor

monitor renal and hepatic function

✓

pediatric_age

neonates
safe
FDA Category
N
Dose Adjustment

weight-based dosing required

Key Recommendations

approved for treatment of candidemia and invasive candidiasis in neonates and pediatric patients

Monitor

monitor liver function tests regularly

✓

pediatric_age

children
safe
FDA Category
N
Dose Adjustment

weight-based dosing required

Key Recommendations

approved for pediatric use, dosing based on weight

Monitor

monitor liver function and for infusion reactions

✓

renal_impairment

moderate to severe
safe
FDA Category
N
Dose Adjustment

no dosage adjustment required

Key Recommendations

no dose adjustment needed for any degree of renal impairment

Monitor

standard monitoring

✓

hepatic_impairment

mild
safe
FDA Category
N
Dose Adjustment

no dosage adjustment required

Key Recommendations

no dose adjustment needed for mild hepatic impairment

Monitor

monitor liver function tests

⚠

hepatic_impairment

moderate to severe
caution
FDA Category
N
Dose Adjustment

consider dose reduction in severe impairment

Key Recommendations

use with caution in severe hepatic impairment, monitor liver function closely

Monitor

frequent liver function monitoring

Use with caution and monitor for adverse effects.

Statistics and clinical data

drug_classWHO
2023

Drug class

Value:Echinocandin antifungal

Micafungin belongs to the echinocandin class of antifungal agents

prescribingFDA
2023

FDA approval year

Value:2005

Micafungin (Mycamine) was approved by the FDA in 2005

usageFDA
2023

Common uses

Value:Treatment of invasive aspergillosis, candidemia, and esophageal candidiasis

Primary therapeutic indications for Micafungin

administrationFDA
2023

Route of administration

Value:Intravenous infusion only

Micafungin is administered exclusively via intravenous infusion

Treatment of invasive candidiasis (including candidemia), esophageal candidiasis, and prophylaxis of invasive fungal infections in patients undergoing hematopoietic stem cell transplantation or those with neutropenia. It is effective against various Candida species including C. albicans, C. glabrata, C. tropicalis, and C. parapsilosis.

Micafungin is an echinocandin antifungal that works by non-competitively inhibiting beta-(1,3)-D-glucan synthase, an enzyme essential for the synthesis of the fungal cell wall. This inhibition weakens the cell wall, leading to osmotic instability and death of the fungal cell.

Administered exclusively by intravenous infusion. Common adverse effects include fever, headache, nausea, and liver enzyme elevations. Rare but serious effects include anaphylaxis, hemolysis, and renal impairment. Should be used with caution in patients with pre-existing liver or kidney disease. Requires regular monitoring of liver and renal function during treatment.

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