Costco FREE Samples: Metamucil Sugar-Free MultiHealth Fiber & Align Probiotic Supplement by Rhonda November 15, 2020 7/25/13. For a limited time, Costco members can get a FREE SAMPLE of Metamucil Sugar-Free MultiHealth Fiber & Align Probiotic Supplement. The sample includes 2 servings of Metamucil MultiHealth Fiber Orange Smooth … 0 FacebookTwitterPinterestEmail