Material used for coating depends on for what purpose we are coating the tablet... Nd which tablet is being coated... for ex.. Table No: 3 Film Coating for Azithromycin dihydrate FC Tablets Ingredients Quantity(mg) Ingredients For One tablet Sunset Yellow Lake 0.05 Protectab - HP 1.8 Polysorbate - 80 0.8 Purified Water Qs