Sometimes a Trial Patient has to have a stand down period to be...

Sometimes a Trial Patient has to have a stand down period to be sure they have no other product residue or treatment for XX days prior to Trial application of eg BOT product.
It would seem reasonable to assume that as the trial patients suffer from the disorder they would be on an alternate remedy until eg BOT clinical Trial began...
so after recruitment is fulfilled doesnt mean they are all under treatment ... One great thing is that the regulators must be satisfied with treatment to date?no adverse side effects ,,well that beats the competition already... now just how well does it work??