Nutritional information for Wendy's Premium Cod Fillet Sandwich is available on the Wendys website. As of 2015, each cod fillet sandwich contains 450 calories, with 3 grams of fiber and 18 grams of protein.
The cod fillet sandwich contains 21 grams of fat, 7 grams of sugar, 40 milligrams of cholesterol and 1,090 milligrams of sodium. However, the sandwich contains no trans fats. Each sandwich provides 20 percent of the recommended daily value of iron.
Wendy's does not offer its cod fillet sandwich as a year-round menu item. In 2015, its limited-time appearance began in February. The sandwich features a lightly breaded North Pacific cod fillet topped with dill tartar sauce, lettuce and dill pickles.