Carbamate Anti Ches
Contraindicated
Textbook
No reactivation of carbamylated enzyme; may worsen the patient's condition due to its own anti-ChE activity.
Pralidoxime is contraindicated in carbamate poisoning.
Source: KDT 7e · p111
Drug reference
Pralidoxime
Antidote
Also known as Pralidoxime chloride
Antidote
CDSCO approved
EXCRETION
—
not curated
INTERACTIONS
1 major
incl. contraindicated
PREGNANCY
—
not curated
Top interactions
- Carbamate Anti ChesContraindicatedTextbookKDT 7e · p111
Mechanism
Pralidoxime chloride functions as a cholinesterase reactivator. It reverses the inhibition of cholinesterase caused by organophosphorus compounds, thereby restoring the enzyme's ability to hydrolyze acetylcholine. This action leads to a reduction in the effects of acetylcholine accumulation, particularly improving muscle tone.
Indications
Treatment of poisoning by organophosphorus insecticide (moderate or severe)Treatment of nerve agent poisoningorganophosphate anti-ChE poisoning
Dosing
- Adult
- Continued until the patient has not required atropine sulfate for 12 hours.
Pharmacokinetics
Onset
Improves muscle tone within 30 minutes of administration.
Half-life
Repetitive dosing recommended due to rapid renal elimination.
Bioavailability
Does not penetrate into brain
Protein binding
The quaternary ammonium group restricts entry into the CNS.
Excretion
Readily eliminated by the kidney
Contraindications
- carbamate anti-ChE poisoning (e.g., physostigmine, neostigmine, carbaryl, propoxur)
Drug interactions
3 additional low-confidence interactions hidden — those rows lack a documented mechanism or management plan in our sources.
Related guidelines
Other Antidote drugs
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Sources: KD Tripathi 7e, Goodman & Gilman 14e, Katzung, BNF·Verified: 2026-05-10 · House clinical team