Acetaminophen

Actinomycin D (Cosmegan)

Allopurinol (Zyloprim)

Aminoglycosides

Aminophylline

Amiodarone (Cordarone)

Arsenic

Aztreonam (Azactam)

Barbiturates

Calcium channel blockers

Captopril (Capoten)

Carbamazepine (Tegretol)

Cephalosporins

Chinese herbs

Chloroquine (Aralen)

Chlorothiazide (Diuril)

Chlorpromazine (Thorazine)

Chlorpropamide (Diabinese)

Cimetidine (Tagamet)

Cisplatin (Platinol)

Clofazimine (Lamprene)

Clotrimazole (Lotrimin)

Codeine

Cyclobenzaprine (Flexeril)

Dapsone

Dimercaprol (BAL in Oil)

Ethylenediamines

Gold

Hydantoins

Hydroxychloroquine (Plaquenil)

Interleukin-2 (Proleukin)

Interferon alfa (Roferon-A, Intron A, Alferon N)

Interferon beta (Avonex, Betaseron)

Iodine (Pima syrup)

Isoniazid (Laniazid, Nydrazid; also in Rifamate, Rimactane)

Isosorbide dinitrate (Isordil, Sorbitrate)

Isotretinoin (Accutane)

Lithium (Eskalith, Lithobid)

Mefloquine (Larium)

Mephyntoin (Mesantoin)

Mercurials

Mercury

Mexilitene (Mexitil)

Minocycline (Dynacin, Minocin, Vectrin)

Mitomycin-C (Mutamycin)

Neomycin (Neosporin)

Nitrofurantoin (Furadantin, Macrodantin)

Omeprazole (Prilosec)

Para-amino salicylic acid (Sodium P.A.S.)

Penicillins

Phenolphthalein (Agoral, Alophen, Modane)

Phenothiazines

Phenobarbital (Donnatal, Bellatal)

Phenytoin (Dilantin)

Quinacrine

Quinidine (Quinidex)

Ranitidine (Zantac)

Rifampin (Rifadin, Rimactane; also in Rifamate)

Streptomycin

Sulfadiazine

Sulfonamides

Sulfonylureas

Terbutaline (Brethine, Bricanyl)

Tetrachloroethylene

Tetracyclines

Thalidomide (Synovir)

Thiazide diuretics

Trimethoprim (Trimpex; also in Bactrim, Septra)

Tolbutamide (Orinase)

Vancomycin (Vancocin)