How to Treat a Fever Blister. Fever blisters, also known as cold sores, are caused by the type 1 herpes simplex virus. You wake up one morning with a tingling or burning sensation on your lip and know immediately what's coming within the next day or two: a painful cold sore, also known as a fever blister. Cold sores are caused by the type 1 herpes simplex virus (HSV-1).
Lutein is called a carotenoid vitamin. It is related to beta-carotene and vitamin A. Foods rich in lutein include broccoli, spinach, kale, corn, orange pepper, kiwi fruit, grapes, orange juice, zucchini, and squash. Lutein is absorbed best when it is taken with a high-fat meal.
Vitamin A: Vitamin A is retinol. Carotene compounds (found, for example, in egg yolk, butter and cream) are gradually converted by the body to vitamin A (retinol).A form of vitamin A called retinal is responsible for transmitting light sensation in the retina of the eye.itamin A: Vitamin A is retinol. Carotene compounds (found, for example, in egg yolk, butter and cream) are gradually converted by the body to vitamin A (retinol).