Orlistat
"Started xenical 6 days ago. As I'm a nightshift worker without bathroom conveniently available all the time I decided to start on days off & with some fat in my diet to see how severe the consequences maybe. Ate cheese salami & crackers and took a pill..thinking the effects would follow soon.  Some 12 hours later the oil / fat passed..& for 6 days that has been my experience. I've lost 2.1 kg so far I'm really happy but have been really thirsty. Which is o.k. Not hungry though.."