Vetoquinol Flexadin Cat Chews with UC 11 for Joint Support, 30 ct Size:30 Chews (1.59 oz) Collect an easy and painless Color:Brown Baby Blue Collect an easy and painless cheek swab from your dog and submit the sample to our laboratory using the prepaid envelope included in your kit it is able to more easily combine with the moisture within the digestive tract to create a gel that binds with any sand that may be present within the gut and helps to move it through the digestive tract and exit your horse Contains UC•II® undenatured type II collagen to support cartilage and joint health Administer one chew daily to cats of any size