Alli is available for purchase through a variety of retailers, including Walgreens, CVS, Rite Aid, Wal-Mart, and Target; in addition to Amazon and Drugstore.com, according to Alli. All of the retailers sell the refill pack, which includes 120 of the 60 milligram capsules.
Prices vary for the Alli refill packs. The refill packs are only available for shipment by ordering the product online or calling the retailer's customer service phone number. Alli decreases the absorption of fat by inhibiting the work of lipase, according to WebMD. With a proper diet and exercise, Alli claims it produces weight loss of 50 percent more than by just diet and exercise alone.