| Substance group | Examples |
|---|---|
| Analgesics | Morphine derivatives |
| Antibiotics | Aminoglycosides, macrolides, quinolones, sulfonamides, tetracyclines, polymyxins, and penicillin in high doses |
| Antiarrhythmics | Procainamide, ajmaline, chinidine |
| Anticonvulsants | Benzodiazepines, gabapentin, carbamazepine, phenytoin |
| β-Blockers | Propranolol, pindolol, timolol |
| Calcium antagonists | Verapamil, nifedipine, diltiazem |
| Diuretics | Loop diuretics (furosemide), acetazolamide, hydrochlorothiazide |
| Statins | Different statins reported |
| Psychotropic agents | Chlorpromazine, promazine |
| Muscle-relaxing agents | Curare derivatives, suxamethonium |
Note: These are merely examples of drugs that can cause a worsening of MG symptoms, and this list cannot be considered complete.