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Vilobelimab

Published: July 26, 2026Updated: August 20, 2026

Vilobelimab is a monoclonal antibody that targets C5a, a key component of the complement system involved in inflammatory responses. By binding to C5a and blocking its interaction with the C5a receptor, it reduces complement-mediated inflammation and tissue damage.

Quick summary

An immunosuppressant monoclonal antibody that inhibits C5a to reduce complement-driven inflammation in certain conditions.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ATC
L04AJ10
RxNorm
2639620
Generic
Vilobelimab
Class
atc-l04
Brands
Gohibic
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 infusion
Usual dose
800mg
Maximum
consult physician
Frequency
every other day (up to 6 doses)
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)intravenous infusion
Usual dose
not established
Maximum
consult physician
Frequency
not established
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)intravenous infusion
Usual dose
800mg
Maximum
consult physician
Frequency
every other day (up to 6 doses)
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Doses above the recommended 800mg may cause increased risk of serious infections and infusion-related reactions
Chronic overdose: cumulative dosing information not fully established; repeated doses above recommended regimen may increase infection risk
Immediate actions
discontinue infusion immediately, monitor vital signs, supportive care, treat infection if present
Antidote
no specific antidote available(supportive care is mainstay of management)
Poison Control: 1-800-222-1222

Special Populations

8 groups
⚠

pregnancy

first trimester
caution
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

use only if potential benefits justify potential risks to the fetus; discuss with healthcare provider

Monitor

regular fetal monitoring recommended

Use with caution and monitor for adverse effects.

⚠

pregnancy

second trimester
caution
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

use only if potential benefits justify potential risks; consider fetal monitoring

Monitor

regular fetal monitoring

Use with caution and monitor for adverse effects.

⚠

pregnancy

third trimester
caution
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

use only if potential benefits outweigh risks; discuss delivery planning

Monitor

regular fetal monitoring and delivery planning

Use with caution and monitor for adverse effects.

⚠

lactation

breastfeeding
caution
FDA Category
N
Dose Adjustment

temporarily discontinue breastfeeding

Key Recommendations

it is unknown if vilobelimab passes into breast milk; a decision should be made whether to discontinue breastfeeding or discontinue the drug

Monitor

monitor infant for signs of infection or adverse effects

Use with caution and monitor for adverse effects.

⚠

geriatric

elderly over 65
caution
FDA Category
N
Dose Adjustment

no specific dose adjustment

Key Recommendations

use with caution; no dose adjustment required but closely monitor for adverse reactions

Monitor

monitor renal function and for infusion-related reactions

Use with caution and monitor for adverse effects.

✗

pediatric_age

children under 18
unsafe
FDA Category
N
Dose Adjustment

not authorized for use

Key Recommendations

not authorized for use in patients under 18 years of age; safety and effectiveness not established

Monitor

n/a - not authorized

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

⚠

renal_impairment

severe renal impairment
caution
FDA Category
N
Dose Adjustment

no specific dose adjustment

Key Recommendations

use with caution; no formal dose adjustment studies conducted; monitor renal function closely

Monitor

monitor renal function before and during treatment

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

moderate to severe hepatic impairment
caution
FDA Category
N
Dose Adjustment

no specific dose adjustment

Key Recommendations

use with caution; no formal dose adjustment studies conducted in hepatic impairment

Monitor

monitor liver function tests

Use with caution and monitor for adverse effects.

Statistics and clinical data

drug_classFDA
2023

Drug class

Value:Complement inhibitor (Monoclonal antibody)

Complement C5 inhibitor monoclonal antibody

regulatoryFDA
2023

FDA Authorization

Value:Emergency Use Authorization (EUA)

FDA emergency use authorization for COVID-19 treatment

mechanismFDA
2023

Mechanism of action

Value:Complement C5 inhibition

Primary pharmacological mechanism

usageFDA
2023

Common uses

Value:Treatment of severe COVID-19 in hospitalized patients

Therapeutic indication

Vilobelimab (marketed as GOHIBIC) is used to treat serious inflammatory conditions where excessive complement activation contributes to tissue damage, particularly in critically ill patients.

As a chimeric IgG4-kappa antibody, vilobelimab binds to C5a with high affinity (Kd 9.6pM), preventing C5a from engaging the C5a receptor and thereby inhibiting complement-mediated inflammatory signaling.

This medication suppresses immune function and may increase risk of serious infections. Patients should be monitored for signs of infection. It is administered intravenously under healthcare supervision. Patients should inform providers of any concurrent infections or immune conditions before 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 20, 2026. · Read our editorial policy