ive tried twice now to trip off cactus... and its failed me both times. at first about 15 grams of peruvian torch, then about 35 grams. what a load of dissapointment that all was.
T. peruvianus can be very variable....and there seems to be many "peruvianoid" types floating around...some are great others are duds. try some peyote or T. bridgesii if you want a sure thing!