Mestinon Side Effects
Generic name: pyridostigmine
Medically reviewed by Drugs.com. Last updated on May 8, 2023.
Note: This document contains side effect information about pyridostigmine. Some dosage forms listed on this page may not apply to the brand name Mestinon.
Applies to pyridostigmine: oral conventional 30-mg tablets for military use, oral conventional 60-mg tablets and extended-release tablets, oral oral solution, parenteral injection.
Warning
-
Military Use for Soman Poisoning Prophylaxis
- Use of pyridostigmine alone is not protective against soman effects.111 Efficacy depends on rapid use of nerve agent antidotes (i.e., atropine and pralidoxime) following nerve agent exposure.111
- Protective garments (e.g., masks, hoods, overgarments) specifically designed for protection from chemical nerve agents are the primary means of protection against nerve agent exposure; do not rely solely on pretreatment with pyridostigmine, atropine, and pralidoxime to provide complete protection.111
- Do not administer pyridostigmine after soman exposure.111 Discontinue at first sign of nerve agent poisoning; may exacerbate effects of a sublethal exposure.111
-
Experience of Health Care Personnel
- Pyridostigmine should be administered by IV injection only by adequately trained individuals familiar with the drug’s actions, characteristics, and risks.124
Side effects include:
Diarrhea, abdominal pain or cramps, dysmenorrhea, increased flatus, nausea, urinary urgency and frequency.
For Healthcare Professionals
Applies to pyridostigmine: injectable solution, oral syrup, oral tablet, oral tablet extended release.
Gastrointestinal
Frequency not reported: Nausea, vomiting, diarrhea, abdominal cramps, GI hypermotility, salivary hypersecretion[Ref]
Respiratory
Frequency not reported: Increased bronchial secretion combined with bronchoconstriction[Ref]
Musculoskeletal
Frequency not reported: Muscle weakness, fasciculation, tremors, muscle cramps, muscle hypotonia[Ref]
Ocular
Frequency not reported: Miosis, increased lacrimation, accommodation disorders[Ref]
Dermatologic
Frequency not reported: Rash, hyperhidrosis[Ref]
Cardiovascular
Frequency not reported: Arrhythmia (including bradycardia, tachycardia, AV block), syncope, hypotension[Ref]
Genitourinary
Frequency not reported: Urinary urgency[Ref]
Frequently asked questions
- Can Mestinon be used to treat Postural Tachycardia Syndrome (POTS)?
- Can I stop taking Mestinon (pyridostigmine)?
- How does Mestinon help with myasthenia gravis?
- What's the mechanism of action for Mestinon (pyridostigmine)?
- Is Mestinon an Immunosuppressant?
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References
1. Product Information. Mestinon (pyridostigmine). ICN Pharmaceuticals Inc. 2001;PROD.
2. Product Information. Regonol (pyridostigmine). Organon. 2002.
3. Cerner Multum, Inc. UK Summary of Product Characteristics.
4. Cerner Multum, Inc. Australian Product Information.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.
