Quality and Patient Safety Articles-Impact of Antibiotics in Patients With Myasthenia Gravis

Impact of Antibiotics in Patients With Myasthenia Gravis

Pdf Summary

In patients with myasthenia gravis (MG), certain antibiotics can worsen neuromuscular transmission and trigger severe symptom exacerbation or even MG crisis. The antibiotics most strongly associated with worsening MG are macrolides, fluoroquinolones, and aminoglycosides; these should generally be avoided if possible.

Among the options listed, <strong>A. Azithromycin</strong> carries the greatest risk of severe MG exacerbation because it is a <strong>macrolide</strong> antibiotic.

Key points:
- <strong>Azithromycin</strong>: higher risk; can worsen MG
- <strong>Penicillin</strong>: generally considered safe and often first-line in MG patients
- <strong>Ceftriaxone</strong>: cephalosporins are usually safe; serious side effects are rare
- <strong>Tetracycline</strong>: rare reports of worsening MG, but much less concerning than macrolides

Infections themselves are also a major trigger for MG exacerbations, so antibiotic treatment is still important—just chosen carefully.

Keywords

myasthenia gravis

azithromycin

macrolide antibiotic

neuromuscular transmission

MG crisis

antibiotic exacerbation

fluoroquinolones

aminoglycosides

penicillin

ceftriaxone