Maybe an alternative to Nattokinase et al, though not yet

[cigafred]

Free link to WSJ article

wsj.com/health/pharma/blood...

I will study later, but the chemistry is probably beyond me and, anyway, it is not yet available.

Factor XI, it turns out, is crucial for the formation of the bad clots inside blood vessels, what doctors call thrombosis. But researchers now believe that factor XI, unlike other blood factors, plays a minimal role in forming the good clots that stop bleeding.