| Category | Drug | Comment |
| Antiasthmatics | aminophylline
theophylline | Especially but not exclusively above therapeutic levels
Especially but not exclusively above therapeutic levels |
| Antibiotics | isoniazid
lindane
metronidazole
nalidixic acid
penicillins | Vitamin B6 supplement may protect
Especially with renal failure |
| Antidepressants | tricyclics
serotonin-specific agents
bupropion | Rarely a practical problem;
desipramine may be preferable |
| General anesthetics | enfluraneketamine | |
| Hormones | insulin
prednisone
estrogen | By means of hypoglycemia
By means of hypocalcemia
Especially without progesterone |
| Immunosuppressants | chlorambucil
cyclosporine a | |
| Local anesthetics | lidocaine
bupivicaine
procaine | |
| Narcotics | fentanyl
meperidine
pentazocine
propoxyphene | |
| Psychostimulants | amphetamines
cocaine
methylphenidate
phenylpropanolamine | |
| Neuroleptics | clozapine
phenothiazines
butyrophenones | 1%-4% of all patients, depending on dose
Molindone, thioridazine, fluphenazine least likely |
| Other | anticholinergics
anticholinesterases
antihistamines
baclofen
heavy metals
hyperbaric oxygen
lithium
mefenamic acid
oral hypoglycemics
oxytocin | By means of water intoxication |