More Clenbuterol

I believe that the late Dan Duchaine once commented that there was a way to make “cattle grade” clenbuterol pellets safe enough for use in humans. This was done through home chemistry (solvent, filter, etc.), but I haven’t been able to find the how-to recipe. I thought that this might be an interesting topic to post since it is similar to your home brew fin. My questions are 1) Is converting the cattle clenbuterol safe enough for human consumption? 2) Is there a recipe? or how would YOU “theoretically” do it? 3) What would the dosage be? Time for all you steriod gurus out there to flex your mental muscles.