I tried Xenical about a year ago.
For 1800 calories, you should not eat anymore than 60 grams of fat each day.
And ideally, the fat should be divided into 20 grams for each meal.
You take a tablet with each meal as well.
The whole idea is to eat more sensibly, eat every 4 hours or so.
And learn to eat less fat each day.
They have a great website - look for the Xenical.ca (Canadain one)
Hope my info helps honey