What does "tall man lettering" help to distinguish?

Tall man lettering is a specific labeling convention used to reduce the risk of medication errors caused by look-alike, sound-alike drug names. By capitalizing specific portions of drug names that may be easily confused with other similar names, tall man lettering helps healthcare professionals quickly distinguish between these potentially hazardous medications at a glance. This practice is particularly important in preventing mix-ups that could lead to serious adverse effects.

For instance, in the case of medications like "Hydroxyzine" and "Hydrochlorothiazide," using tall man lettering would emphasize the differing parts of the names, helping to ensure that the correct medication is dispensed and administered to patients. This method is widely endorsed by organizations such as the Institute for Safe Medication Practices (ISMP) to promote safer practices in medication handling.