Notice!

Confluence may be unavailable on Thursday, June 29th from 4 AM - 7 AM EST while a plugin is installed.

Child pages
  • Drugs to Avoid in Myasthenic Crisis
Skip to end of metadata
Go to start of metadata


Drugs that impair neuromuscular junction transmission and may increase weakness

  • Antibiotics
    • Aminoglycosides
      • Tobramycin
      • Gentamycin
      • Netilmicin
      • Neomycin
      • Streptomycin
      • Kanamycin
    • Fluoroquinolones
      • Ciprofloxacin
      • Norfloxacin
      • Ofloxacin
      • Gatifloxacin
    • Tetracyclines
      • Clindamycin
      • Sulfonamides
    • Penicillins - considered safe, though anecdotes of ampicillin causing resp depression
    • Macrolides
      • Azithromycin
      • Clarithromycin
    • Quinolones
    • Ritonavir
  • Quinidine
  • Quinine
  • Chloroquine
  • Magnesium containing preparations (and avoid hypermagnesemia)


Drugs implicated as potentially harmful in myasthenia gravis patients based on either anecdotal case reports or in-vitro microelectrode studies

  • Beta blockers
    • Propanolol
    • Oxprenolol
    • Timolol
    • Practolol
    • Atenolol
    • Labetalol
    • Metoprolol
    • Nadolol
  • Calcium channel blockers
    • Verapamil
  • Other cardiac drugs
    • Procainamide
    • Bretylium
    • Trimethaphan
  • Anticonvulsants
    • Phenytoin
    • Barbiturates
    • Ethosuximide
    • Gabapentin
  • Ophthalmologic meds
    • Timolol
  • Psychiatric meds
    • Lithium
    • Phenothiazines
    • Amitriptyline
    • Imipramine
    • Haldol
  • Amphetamines



  • No labels