Can-C Eye Drops 2 x 5ml vialsNo discounts will apply to this product Can C Eye Drop General information: Each box contains two 5ml vials bottles and will last for approximately 3 weeks if used for both eyes two drops twice a day. Each 5ml vial contains approximately 80 drops. View chart below to determine approximately how many boxes of Can C eye drops to purchase 1 box 3 weeks supply both eyes 2 drops twice daily 2 boxes 6 weeks supply both eyes 2 drops twice daily 3 boxes 2