Once dispensed, most medicines expire after a year. Dabigatran, however, is far from the usual pill. It’s packaged in pellet form within a capsule. These pellets are highly susceptible to water and humidity. So when dispensed in a typical vial–not a single-sealed blister pack–the drug expires in only 30 days.I learned today from our pharmacy personnel that you can specify blister packs on a prescription which will assure a longer shelf-life of the medication (just be sure your patients can open them).