Cod Liver Oil
If fish is not your favorite food, then cod liver oil would be a good alternative to obtain sufficient vitamin D and many other important nutrients. A teaspoon of this ingredient contains up to 450 IU, which can meet around 55 percent of your daily recommended intake. That is why many doctors often suggest the oil for preventing and treating vitamin D deficiencies, especially in kids. In addition, cod liver oil is high in vitamin A and omega-3 fatty acids. Nevertheless, avoid taking too much as it can lead to some harmful side effects. [5]
