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 How much weight will I lose on average with the Slenderiiz Program? What are the common side effects of the Slenderiiz Program? How do I take Restoriix with Slenderiix & Xceler8 drops? What is Xceler8? Comments 0 comments Please sign in to leave a comment.