I am allergic to caffeine but would like to take weight loss pills, are there any in the market?

yes Alli but don't think you wont have to stick to it's diet plan if you start it. The side affects of consuming more than 15 grams of fat in a meal is very, very, loose and messy stools.
15 grams of fat is the same as eating a little more than 1 oz. of almonds.
If you want to lose weight there isn't a magic pill.