After one week I was switched from plavix to effient when I discovered my
genetic makeup made me a very low responder to
plavix. On hindsight I wonder why
genetic testing wasn't done up front, or at least a test to check response - it was just by happpenstance I looked at the genetic test I had done for different reasons two years ago and it had a drug response section. if not for this I would still be on plavix with a much higher chance of problems.