This page contains brief details about the drug , it's indication, dosage & administaration, mechanism of action, related brands with strength, warnings and common side effects.

Background and Date of Approval

Pralidoxime was initially approved by the United States Food and Drug Administration (FDA) on  September 29, 1972.

Mechanism of Action of undefined

Pralidoxime works by binding to and removing the organophosphate from acetylcholinesterase, allowing the enzyme to resume its normal function. This helps reduce the overstimulation of nerves and muscles caused by excess acetylcholine, alleviating symptoms like muscle twitching, weakness, and respiratory distress. 

Uses of undefined

Pralidoxime is primarily used to treat poisoning caused by organophosphate exposure, commonly found in pesticides, insecticides, and nerve agents. It functions as an antidote by reactivating the enzyme acetylcholinesterase, mitigating symptoms such as muscle weakness, twitching, paralysis, and respiratory distress.

undefined Drug administaration and Dosage available

Pralidoxime can be administered through intravenous (IV) or intramuscular (IM) routes. Proper administration by trained healthcare professionals is important for effective treatment.

Warnings, Precautions and Side Effects of undefined


Pralidoxime can cause allergic reactions. It might lead to a rapid or irregular heartbeat. This medication can trigger seizures, particularly in individuals prone to seizures.  It can affect neuromuscular function.  Individuals with certain medical conditions, such as high blood pressure, asthma, or overactive thyroid, might experience exacerbated symptoms.


Seek medical attention immediately if you experience symptoms like difficulty breathing, rash, or swelling after taking Pralidoxime. If you have a history of heart problems, inform your healthcare provider before using the medication. Use with caution if you have a history of epilepsy or similar conditions. If you have conditions like myasthenia gravis, consult your healthcare provider before using the medication.

Side Effects

Pralidoxime can cause a range of side effects. Common side effects include pain, redness, swelling at the injection site, nausea, headache, dizziness, muscle weakness, blurred vision, and increased salivation. Serious side effects, though rare, may include severe allergic reactions, irregular heartbeat, seizures, severe headaches, chest pain, and difficulty passing urine.

Word Of Advice

When using Pralidoxime, ensure you are under the care of experienced healthcare professionals and communicate any allergies, medical conditions, or medications you are taking. Consult your healthcare provider if you are pregnant, breastfeeding, or have kidney issues. Follow the prescribed dose and dosing schedule, and store the medication properly. Be vigilant for side effects, especially serious ones like allergic reactions or irregular heartbeat. If you suspect organophosphate poisoning or nerve agent exposure, seek immediate medical attention. Complete the full treatment, even if symptoms improve. Monitor your condition, report adverse reactions, and follow your healthcare provider's advice on activities that require alertness. Educate yourself about proper administration, especially if provided with autoinjectors. Always be in contact with your healthcare provider for guidance.

Frequently Asked Question


  1. KD Tripathi, Cholinergic Transmission and Cholinergic Drugs, Essentials of Medical Pharmacology, 8th Edition, 2019, 110-123.
  2. Kent R. Olson, Management of the Poisoned Patient, Lange’s Basic & Clinical Pharmacology, 14th Edition, 2018, 1035-1046.
  3. Meridian Medical Technologies™, Inc. , US Food & Drug Administration, [Revised on  5th 2020] [Accessed on 29 August 2023],


The drug information on this page is not a substitute for medical advice, it is meant for educational purposes only. For further details, consult your doctor about your medical condition to know if you can receive this treatment.