Benefit Fact Sheet. TRICARE for Life (TFL) is TRICARE's Medicare-wraparound coverage available worldwide to TRICARE beneficiaries who are also entitled to Medicare. Essentially, TFL acts as a supplement to Medicare Part A and B, there are no special enrollment procedures or TRICARE premium payments. You must pay Medicare Part B monthly premiums.
Vitamin A is also used for shigellosis, diseases of the nervous system, nose infections, loss of sense of smell, asthma, persistent headaches, kidney stones, overactive thyroid, iron-poor blood (anemia), deafness, ringing in the ears, and precancerous mouth sores (leukoplakia).
Vitamin A, a fat-soluble vitamin, plays an important role in bone growth, reproduction, immune function, hormone synthesis and regulation, and vision. Your eyes need vitamin A to help them convert light into brain signals that allow you to perceive images.hat are the best food sources? Preformed vitamin A (a.k.a. retinol) is found in foods of animal origin, such as liver, eggs, milk fortified with vitamin A, fortified cereals and fish.