Version July 2025
| Acarbose |
| Acetylsalicylic acid |
| Allopurinol |
| Allylisopropylacetylurea |
| Amoxapine |
| Apalutamide |
| Atezolizumab |
| Azathioprine |
| Bamifylline |
| Bleomycin |
| Boldoflorine |
| Buphenine |
| Bufexamac |
| Calcium channel blockers |
| Carbamazepine |
| Carbimazole |
| Carbutamide |
| Celecoxib |
| Cetirizine and levocetirizine (due to similarity with hydroxyzine) |
| Chemotherapy (high dose) |
| Chromium picolinate |
| Cimetidine |
| Clemastine |
| Clobazam |
| Clopidogrel |
| Clozapine |
| Contrast media |
| Corticosteroids |
| Cytarabine |
| Dalteparin |
| Dextropropoxyphene |
| Dihydrocodeine phosphate |
| Diltiazem |
| Disulfiram |
| Docetaxel |
| Enalapril |
| Enoxaparin |
| Eperisone hydrochloride |
| Epoetin alfa |
| Eprazinone |
| Erlotinib |
| Etodolac |
| Etoricoxib |
| Fenoterol |
| Fluindione |
| Furosemide |
| Gefitinib |
| Gemcitabine |
| Herbal medications |
| Hydrochlorothiazide |
| Hydroxyzine |
| Ibuprofen |
| Icodextrin |
| Illicit street drugs |
| Imatinib |
| Ipilimumab |
| Isotretinoin |
| Laquer chicken |
| Meladinine |
| Mercury |
| Metamizole |
| Methylphenidate |
| Milk thistle tea |
| Morphine |
| Nadoxolol |
| Nifedipine |
| Nimesulide |
| Nivolumab |
| Omeprazole |
| Paracetamol (acetaminophen) |
| Pemetrexed |
| Pembrolizumab |
| Phenytoin |
| Piperazine ethionamide |
| Propafenone |
| Prostaglandin E1 |
| Pseudoephedrine |
| PUVA |
| Quinidine |
| Ranibizumab (intravitreal) |
| Ranitidine* |
| Rhus (lacquer) |
| Sennoside |
| Sertraline |
| Simvastatin |
| Spider bites |
| Sulbutiamine |
| Sulfasalazine |
| Teicoplanin |
| Terazosin hydrochloride |
| Tetrazepam |
| Thalidomide |
| Thallium |
| Ticlopidine |
| Topical agents |
| Vaccines |
| Valdecoxib |
AGEP: acute generalized exanthematous pustulosis; PUVA: psoralen plus ultraviolet A.
* Ranitidine has been withdrawn from the United States market.