Fat First contains FBCx® (alpha-cyclodextrin), a naturally occurring, patented dietary fiber. While typical dietary fibers adhere to dietary fat in an approximate 1:1 ratio, the ingredient in Fat First has demonstrated an impressive fat absorbing capability of up to 1:9. Each serving (2 tablets) of Fat First capture up to 18 grams of dietary fat (equal to about 162 calories). The dietary fat captured by Fat First passes through the digestive tract without being absorbed and is eliminated without unpleasant side effects. When taken with meals or snacks three times per day, Fat First can help manage weight by preventing the absorption of up to 486 calories a day (about 54 grams of dietary fat).