Antibiotics: beta-lactams, cephalosporins, linezolid (Zyvox), penicillins, rifampin, trimethoprim/sulfamethoxazole, vancomycin

Anticoagulants: heparins

Antiepileptic agents: carbamazepine (Tegretol), lamotrigine (Lamictal), levetiracetam (Keppra), phenytoin (Dilantin), valproic acid (Depakene)

Antihypertensive agents: captopril, chlorthalidone, hydrochlorothiazide, methyldopa, spironolactone

Antineoplastic agents: bleomycin, fludarabine, interferon alfa, oxaliplatin (Eloxatin), rituximab, trastuzumab (Herceptin)

Benzodiazepines: diazepam (Valium), lorazepam (Ativan)

Cardiac agents: amiodarone, digoxin, furosemide (Lasix)

Chemotherapeutic agents

Glycoprotein IIb/IIIa inhibitors: tirofiban (Aggrastat), eptifibatide

Histamine H2 antagonists: cimetidine (Tagamet)

Nonsteroidal anti-inflammatory drugs: acetaminophen, diclofenac, gold compounds (Ridaura), ibuprofen, indomethacin, naproxen, piroxicam (Feldene)

Over-the-counter* definite association: cranberry juice, Jui herbal tea, Lupinus termis bean, cow's milk, tahini (sesame seed paste)

Over-the-counter* possible association: chromium picolinate, Echinacea pallida, Hypericum perforatum (St. John Wort), nicotinamide, vitamin A palmitate, Cupressus funebris (mourning cypress)

Psychotropic agents: chlorpromazine, citalopram (Celexa), haloperidol, olanzapine (Zyprexa), risperidone (Risperdal)

Quinine: these chemicals are enantiomers (a mirror image of each other); quinine is a class 1 antiarrhythmic agent and has been used for treatment of malaria