pyridostigmine
Pronunciation: pie-rid-oh-STIG-meen
Anticholinesterase medication used as first-line symptomatic treatment for myasthenia gravis by improving neuromuscular transmission.
Full Definition
Pyridostigmine is an anticholinesterase inhibitor that serves as the primary symptomatic treatment for myasthenia gravis. The drug works by preventing breakdown of acetylcholine at the neuromuscular junction, thereby enhancing neuromuscular transmission and improving muscle strength. Available in immediate-release and extended-release formulations, pyridostigmine provides temporary symptom relief but does not alter the underlying autoimmune process. Common side effects include gastrointestinal symptoms, increased salivation, and muscle fasciculations due to cholinergic excess. Dosage must be carefully titrated to balance symptom improvement against cholinergic side effects. The medication is also used in other neuromuscular junction disorders and as an antidote for certain nerve agents.
Usage
Usage note: Brand name Mestinon is commonly used; always specify dosage and frequency in prescriptions.
In Context
- "The patient's myasthenia gravis symptoms improved significantly after initiating pyridostigmine 60mg three times daily." — Treatment response note
- "Pyridostigmine dosage was adjusted to minimize gastrointestinal side effects while maintaining symptom control." — Medication review