Yes orlistat. Yes will cause the runs but great for cheat food days when you are taking in too much fat; overall decreases fat intake by 15-20% maybe? Nonetheless it works and thats what counts here.
Also I would like to add in to my ultimate fat loss combo quoted below. Why? B/C Sesathin should provide fat loss on an alternate pathway but I believe this must be taken spaced away from the Alli/orlistat.