Final answer:
The PRoFESS trial showed that it may prevent clots from becoming larger and causing more serious problems, and it is often prescribed to prevent first or recurrent strokes.
Step-by-step explanation:
The PRoFESS (Prevention Regimen for Effectively Avoiding Second Strokes) trial showed that it may prevent clots from becoming larger and causing more serious problems, and it is often prescribed to prevent first or recurrent strokes.