Tallman lettering as a strategy for differentiation in look-alike, sound-alike drug names: the role of familiarity in differentiating drug doppelgangers.

DeHenau C, Becker MW, Bello NM, Liu S, Bix L. Appl Ergon. 2016;52:77-84.

This study found that Tallman lettering—in which specific letters in drug names are printed in capital letters to avoid being mistaken for a look-alike or sound-alike medication—led to more effective detection of changes between drugs by health care professionals and consumers. A prior WebM&M commentary discussed Tallman lettering as one strategy for improving the safety of look-alike and sound-alike medications.