You really dont wanna mess with anything but the purple ringers,it depends on your natural tolerance and immune system,because essentialy youre putting poison into youre body.I havent done them in years but when i was doing them it only took me 4 or good caps that weremaybe 2 inches in diameter on top and i was up goin for a couple hours.As long as they have golden brown tops with a purple ring on the stem thats the good ones.The best thing i tryed with em were blending them with sunnydelight,orangejuice,or Koolaide wilberry mix, usualy a batch of 80 or so caps will be some potent stuff......ahh the good times.