, squeeze the bottle, and fill the reservoir to the marked dosage level. Then the glucosamine can be poured over food or into a juice. Many of the brands have some flavor added to them. But the dosage is very small and the amount of the product with the flavor is barely, if at all, noticed in the drink or food. This easy to use measuring device built right into the bottle makes the liquid form of glucosamine the product of choice for most people needing an arthritis supplement.