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Chloroprocaine

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

Chloroprocaine is a short-acting ester-type local anesthetic used to induce regional anesthesia during surgical and obstetric procedures. It works by blocking nerve conduction in a localized area, making it particularly suitable for procedures requiring rapid onset and brief anesthesia. This medication is commonly administered via epidural, spinal, or peripheral nerve block techniques.

Quick summary

A short-acting local anesthetic used for regional anesthesia in surgeries and childbirth.

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

Key facts at a glance

ATC
N01BA04
RxNorm
20859
Generic
Chloroprocaine
Class
atc-n01
Brands
Clorotekal, Nesacaine, Iheezo
Availability
rx
Pregnancy
C
Lactation
caution
Routes
ophthalmic
Forms
injection, gel, solution
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 CNS and cardiovascular toxicity, particularly with accidental intravascular injection
Chronic overdose: Repeated administration without proper dosing intervals may lead to accumulation of para-aminobenzoic acid (PABA) metabolite
Immediate actions
Stop injection, ensure airway and ventilation, administer oxygen, control seizures with benzodiazepines, begin ACLS if needed, consider lipid emulsion therapy
Antidote
20% Intralipid (lipid emulsion)(Effective for local anesthetic systemic toxicity, should be administered early in cardiac toxicity)
Poison Control: 1-800-222-1222

Special Populations

8 groups
⚠

pregnancy

first trimester
caution
FDA Category
B
Dose Adjustment

use lowest effective dose

Key Recommendations

use only when benefits outweigh risks; avoid prolonged use

Monitor

routine prenatal monitoring

Use with caution and monitor for adverse effects.

⚠

pregnancy

second third trimester
caution
FDA Category
B
Dose Adjustment

use lowest effective dose

Key Recommendations

use only when benefits outweigh risks; avoid prolonged exposure

Monitor

routine prenatal and fetal monitoring

Use with caution and monitor for adverse effects.

✓

lactation

breastfeeding
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

compatible with breastfeeding; minimal milk transfer expected

Monitor

no specific monitoring required

⚠

geriatric

elderly
caution
FDA Category
N
Dose Adjustment

reduce dose based on patient condition

Key Recommendations

use lower doses due to increased sensitivity; monitor for cardiovascular depression

Monitor

close cardiovascular and neurological monitoring

Use with caution and monitor for adverse effects.

⚠

pediatric_age

pediatrics
caution
FDA Category
B
Dose Adjustment

weight-based dosing required

Key Recommendations

use in children only by experienced practitioners; verify correct concentration

Monitor

cardiovascular and respiratory monitoring

Use with caution and monitor for adverse effects.

⚠

renal_impairment

renal impairment mild moderate
caution
FDA Category
N
Dose Adjustment

use with caution; no major dose reduction for single dose

Key Recommendations

monitor for accumulation with repeated dosing; use lowest effective dose

Monitor

monitor renal function and signs of toxicity

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

hepatic impairment mild moderate
caution
FDA Category
N
Dose Adjustment

reduce dose or increase dosing interval

Key Recommendations

metabolized by plasma cholinesterase; impaired metabolism may prolong effect

Monitor

monitor for signs of toxicity and extended duration

Use with caution and monitor for adverse effects.

⚠

alcohol_users

chronic alcohol use
caution
FDA Category
N
Dose Adjustment

use with caution; consider reduced doses

Key Recommendations

may have increased risk of CNS toxicity; avoid high doses

Monitor

monitor for signs of CNS toxicity

Use with caution and monitor for adverse effects.

Statistics and clinical data

drug_classWHO
2023

Drug class

Value:Local anesthetic (ester-type)

Chemical classification of Chloroprocaine

usageFDA
2023

Common uses

Value:Regional anesthesia (spinal, epidural), surgical procedures, obstetric anesthesia

Primary therapeutic applications

prescribingFDA
2023

First FDA approval

Value:1955

Nesacaine was the first FDA-approved brand

mechanismFDA
2023

Mechanism of action

Value:Blocks sodium channels in nerve fibers, preventing nerve impulse transmission

Pharmacodynamic properties

Used for epidural anesthesia during labor and cesarean delivery, as well as spinal anesthesia, peripheral nerve blocks, and infiltration anesthesia for minor surgical procedures requiring brief, rapid-onset anesthesia.

Functions as a sodium channel blocker, inhibiting the influx of sodium ions into nerve cells to prevent the generation and conduction of nerve impulses, thereby numbing the targeted area.

Contains an ester linkage and may cause allergic reactions in patients sensitive to PABA (para-aminobenzoic acid). Should only be administered by qualified healthcare professionals trained in regional anesthesia techniques. Use with caution in patients with certain cardiovascular conditions.

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