In Reply.— In Canada, pediatric Lanoxin is available, as stated in our article, in a concentration of 0.05 mg/mL (Compendium of Pharmaceuticals and Specialties, ed 21. Ottawa, Canadian Pharmaceutical Association, 1986). This is another source of errors; physicians today moving from country to country should always check the stock solutions of drugs available and not assume that they are the same as at home.