Note: This document contains side effect information about pralidoxime. Some dosage forms listed on this page may not apply to the brand name Protopam Chloride.
Applies to pralidoxime: injection powder for solution.
Serious side effects of Protopam Chloride
Along with its needed effects, pralidoxime (the active ingredient contained in Protopam Chloride) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor or nurse immediately if any of the following side effects occur while taking pralidoxime:
More common
- Blurred or double vision
- change in near or distance vision
- difficult or rapid breathing
- difficulty in focusing the eyes
- difficulty with speaking
- dizziness
- fast, pounding, or irregular heartbeat or pulse
- muscle stiffness or weakness
- pain at the injection site (after injection into a muscle)
Incidence not known
- Deep or fast breathing with dizziness
- numbness of the feet, hands, and around the mouth
Other side effects of Protopam Chloride
Some side effects of pralidoxime may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.
Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
- Drowsiness
- headache
- nausea
For Healthcare Professionals
Applies to pralidoxime: intravenous powder for injection.
Cardiovascular
Frequency not reported: Tachycardia, increased systolic and diastolic blood pressure[Ref]
Musculoskeletal
Frequency not reported: Muscular weakness[Ref]
Nervous system
Frequency not reported: Drowsiness[Ref]
Respiratory
Frequency not reported: Hyperventilation[Ref]
Ocular
Frequency not reported: Blurred vision, diplopia, impaired accommodation[Ref]
Gastrointestinal
Frequency not reported: Nausea[Ref]
Metabolic
Frequency not reported: Transient elevations of creatine phosphokinase
Hepatic
SGOT and SGPT levels returned to normal after about 2 weeks.[Ref]
Frequency not reported: Elevations in SGOT and/or SGPT enzymes[Ref]
Local
Frequency not reported: Pain at the injection site[Ref]
Mild to moderate pain at the injection site occurs 40 to 60 minutes after intramuscular injection.[Ref]
