HydraMed Forte Daily Dose vials contain sodium hyaluronate 0.4% and tamarind seed polysaccharide 0.2% to effectively soothe and lubricate the eyes for longer. Each reclosable HydraMed Forte UD vial is preservative-free and once opened, each vial can be used for up to 12 hours. Put one drop in the eye one or more times a day as required.