McKesson specializes in over the counter drugs with our private label, McKesson Brands. Our generic private label OTC drugs offer the quality and features you expect. Browse our selection of McKesson Brands over the counter medicine and other national brands for OTC products such vitamins, minerals, laxatives, antacids, probiotics, aspirin, ibuprofen, antibiotic ointment, hydrogen peroxide, isopropyl alcohol, cough suppressants, cold medicine, eye drops, allergy medication and pill boxes.