Tall man lettering (TML) is a technique that uses uppercase lettering to help differentiate look-alike drug names.  Starting on the left side of a drug name, TML highlights the differences between similar drug names by capitalizing dissimilar letters (e.g., vinBLAStine versus vinCRIStine and CISplatin versus CARBOplatin).  TML can be used along with color or bolding to draw attention to the dissimilarities between look-alike drug names, and alert healthcare providers that the drug name can be confused with another drug name. 

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Also see: ISMP List of Additional Drug Names with Tall Man Letters

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. An asterisk follows all brand names on the ISMP list.