Patients with myasthenia gravis should be careful when taking some medications. Because some drugs can directly aggravate the disease, myasthenia gravis medications are contraindicated and there are several types of drugs that need to be used with care or by will as follows Cardiovascular medications Anti-arrhythmic drugs, often used to prevent and treat arrhythmias, include procaine, quinidine, lidocaine, etc.; beta-adrenergic receptor blockers, including insulin, atenolol, vinblastine, betaxolol, indololol (insulin quiet), insulin yi, timolol, etc. Some elderly patients with myasthenia gravis often have a combination of cardiovascular disease, so these drugs are often used, which should be used under the guidance of a neurologist. Antibiotics Aminoglycoside antibiotics, including gentamicin, butamycarbamycin, etanercept, tobramycin, streptomycin, kanamycin, amikacin, etc.; tetracyclines, including tetracycline, oxytetracycline, deoxytetracycline, dimethylaminotetracycline, etc. These are usually oral tablets, commonly used for respiratory and gastrointestinal tract infections, which are relatively less likely to induce exacerbation of myasthenia gravis. Quinolones, such as ciprofloxacin, haloperidol, and fluazinic acid, which are commonly used in the treatment of gastrointestinal and urinary tract infections, also have the potential to induce myasthenia gravis. The antibiotics that have not been found to aggravate myasthenia gravis are: penicillin, erythromycin, chloramphenicol, spiramycin, dactinomycin, vanguardomycin, and other cephalosporin antibiotics. Therefore, we recommend that penicillin antibiotics, cephalosporin antibiotics and chloramphenicol be preferred when choosing antibiotics for patients with myasthenia gravis. Narcotic drugs Many narcotic drugs can directly aggravate myasthenia gravis. Myorelaxants (arrow toxin, D-cartridge arrow toxin base) can cause respiratory muscle weakness causing death by asphyxia and are prohibited drugs for myasthenia gravis; membrane stabilizers (quinine, quinidine, acetonide endoureas, procainamide), depolarizing drugs (decamethoprim, butanediol choline) and other conduction blockers at the neuromuscular junction should be used with caution; respiratory depressants such as valium, morphine, and tranquilizers should also be used with caution. Hormonal drugs Prednisone, methylprednisolone and dexamethasone are the most commonly used drugs in the treatment of myasthenia gravis. However, changes in the condition should be closely observed in the early stage of hormone application, because there is often a transient aggravation of symptoms at this time, and individual patients may even develop myasthenia gravis (i.e., causing respiratory muscle weakness, which can lead to death by asphyxia in severe cases). It is recommended that during the first three weeks of hormone treatment for myasthenia gravis, it is best to be hospitalized in a large hospital with ventilator facilities to avoid danger. Antipsychotic drugs This group of drugs includes chlorpromazine, clozapine, haloperidol (trifloxystrobin), isocarbohydrazide, phencyclidine, etc.