<h3>To the Editor:—</h3> I recently compiled a listing of drugs whose names look alike or sound alike. When a pharmacist takes a prescription over the telephone or attempts to decipher a physician's handwriting, a drug product not intended by the prescribing physician might be dispensed. Such an error might be the result of sound-alike or look-alike drugs. Here is a list of ten. Aerolone—Aralen—Arlidin Demerol—Dicumarol—Temaril Desoxyn—digoxin—digitoxin Dilantin—Delalutin—Deladumone Edecrin—Ecotrin—Medaprin Esimil—Isomyl—Estomul Ethamide—ethionamide— ethinamate Felsol—Feosol—Festal Haldrone—Halodrin—Haldol Maalox—Marax—Maolate It could as easily be a hundred. Perhaps when names like Tetracyn, Tetrastatin, and Terrastatin have a common parent, avoidance of confusion is impossible. However, at the present time great caution must be exercised by physicians when writing prescriptions, and even more when transmitting them by telephone. The mode of flattery which, being at once safe and efficacious, is the best adapted to the purposes of