phenylbutazone, azapropazon and oxyfenbutazone, insulin and oral antidiabetic products, metformin, salicylates and p-amino-salicylic acid, anabolic steroids and male sex hormones, chloramphenicol, coumarin anticoagulants, fenfluramine, fibrates, ACE inhibitors, fluoxetine, allopurinol, sympatholytics, cyclo-, tro-and iphosphamides,