Foods
	Bananas, beets, buckwheat, Chamomile tea, citrus fruits, cow's milk,* egg whites,* fish,* kiwis, mustard, pinto beans, potatoes, rice, seeds and nuts (peanuts, Brazil nuts, almonds, hazelnuts, pistachios, pine nuts, cashews, sesame seeds, cottonseeds, sunflower seeds, millet seeds),* shellfish*
Venoms and saliva
	Deer flies, fire ants, Hymenoptera (bees, wasps, yellow jackets, sawflies),* jellyfish, kissing bug (Triatoma), rattlesnakes
Antibiotics
	Amphotericin B (Fungizone), cephalosporins, chloramphenicol (Chloroptic), ciprofloxacin (Cipro), nitrofurantoin (Furadantin), penicillins,* streptomycin, tetracycline, vancomycin (Vancocin)
Aspirin and nonsteroidal anti-inflammatory drugs*
Miscellaneous other medications
	Allergy extracts, antilymphocyte and antithymocyte globulins, antitoxins, carboplatin (Paraplatin), corticotropin (H.P. Acthar), dextran, folic acid, insulin, iron dextran, mannitol (Osmitrol), methotrexate, methylprednisolone (Depo-Medrol), opiates, parathormone, progesterone (Progestasert), protamine sulfate, streptokinase (Streptase), succinylcholine (Anectine), thiopental (Pentothal), trypsin, chymotrypsin, vaccines
Latex rubber*
Radiographic contrast media*
Blood products
	Cryoprecipitate, immune globulin, plasma, whole blood
Seminal fluid
Physical factors
	Cold temperatures, exercise
Idiopathic*