do you know what the blood thinner was that they used? Was it Warfarin....Asprin? Something else? Most blood thinners are Asprin based - my dad is on blood thinners because of he has a heart condition and now a DVT - and he used to get the runs on a frequent basis because the Asprin plays havok with his gut. I flat out can't take Asprin at all because it gives me heinous diarrhea