I have been prescribed Warfarin but wonder if a tablet called Playvix will be better

Warfarin is an anti-coagulant used to prevent blood clots/strokes/heart attacks.

Plavix (not playvix) keeps platelets from sticking together to prevent clots/strokes/heart attacks.

Why are you asking? Do you not trust your Physician? I'd ask him/her why you are on one and not the other.

I'm sure there's a medical reason based on your current condition.