Hey Slimfasters!! My friend has been taking them alli tablets. I do not intend to take them as I think there expensive. But I took one of hers to see how it worked. Took one with my evening meal. Then when I went to the toilet, what I can only describe as the oil you have on top of a pizza sat on the top of the toilet water. Flushed the chain and there was still shimmery oil glaze to the water. Amazing that it worked. I think she said it removes 25% of oil you eat. Anyway not my type of thing, gross!! But works!! Just wandered people opinions.