I utilise Cayenne pepper in a very hot alcoholic tincture form. I tried making a tincture utilising Apple Cyder Vinegar and African Bird Peppers but it was weak. I put this down to possibly the Cyder Vinegar having a somewhat buffer effect on the Pepper. Theres not many things as powerful as a properly prepared Cayenne tincture in 5-10ml. The only thing I've found more powerful than Cayenne tinctures is a African Bird Pepper whole along with it's seeds. This will really hit your lungs hard but it's well worth it. The feeling will be potent for up to four hours sometimes. Cayenne is a wonderful herb. The real dodgy stuff is Garlic or Cooking Onion juiced. You will be on the floor very quickly indeed.