How long do Slenderiix and Xceler8 drops last after opening? Administrator August 14, 2017 18:20 Slenderiix drops do not expire if kept out of the sun. Xceler8 drops expire one year after opening. Related articles Slenderiiz FAQs Is honey approved for the Slenderiiz Program? Are product ingredients organic? Is Slenderiix recommended for a recovering alcoholic or someone who has went through an AA program? NuCerity Elite Comments 0 comments Please sign in to leave a comment.