What Are LASA Drugs
Look-alike sound-alike (LASA) medications are drug pairs whose names look similar when written or sound similar when spoken. These similarities create a risk of medication errors if one drug is accidentally dispensed or administered in place of another. Patient safety is one of the PTCE's key domains, and LASA drugs are a commonly tested topic.
Examples of LASA Pairs
There are many LASA pairs that pharmacy technicians should be aware of. Some commonly cited examples include drug names that differ by only a few letters or that sound nearly identical when spoken quickly. Being aware of these pairs helps you pay closer attention during prescription entry and filling.
Why LASA Errors Happen
LASA errors occur for several reasons:
- Illegible handwriting on prescriptions
- Similar-sounding verbal orders
- Look-alike packaging or labeling
- Medications stored next to each other on pharmacy shelves
- Fast-paced work environments where technicians may not read labels carefully
Prevention Strategies
Pharmacies use several strategies to prevent LASA errors:
- Tall man lettering - capitalizing different portions of similar drug names to highlight differences
- Separating LASA drugs on shelves so they are not stored adjacent to each other
- Using barcode scanning during filling to verify the correct product
- Requiring both generic and brand names during verbal orders
- Using clinical decision support alerts in pharmacy software
Tall Man Lettering
Tall man lettering is a technique where parts of a drug name are capitalized to draw attention to the differences between similar names. This visual cue helps pharmacy staff distinguish between look-alike names during order entry and filling. The PTCE may ask about the purpose of tall man lettering as a safety measure.
Your Role
As a pharmacy technician, you are often the first line of defense against LASA errors. Reading labels carefully, using barcode scanning when available, and speaking up when something does not look right are all part of maintaining patient safety in your daily work.