... .6 IU/g)Mackerel, cooked, 100 g (3.5 oz), 345 IU (3.45 IU/g)Sardines, canned in oil, drained, 50 g (1.75 ... oz), 250 IU (5 IU/g)Tuna, canned in oil ... , 100 g (3.5 oz), 235 IU ... ), provides 15 IU (0.15 IU/g)Fish liver oils, such as cod liver oil, 1 Tbs. (15 ml) provides 1360 IU ...