I used alli last year and lost weight. then Alli went off the shelves for awhile and finally came. Back on the shelves so i started them again. Im starting to doubt the product because i have gained back 25 lbs & i dont see the evidence of oil slippage in the toilet when eating a fatty meal like tacos. Did your product remove or change the ingrediants in Alli when it was removed from the store shelves? I heard the key ingrediant was not available at that time.