Vitamin A deficiency can be prevented by including foods rich in vitamin A or beta-carotene as a regular component of the diet; liver, meat, eggs, milk, and dairy products are examples. Foods rich in beta-carotene include red peppers, carrots, pumpkins, as well as those just mentioned.eta-carotene is a form of pre-vitamin A, which is readily converted to vitamin A in the body. Night blindness is the first symptom of vitamin A deficiency. Prolonged and severe vitamin A deficiency can produce total and irreversible blindness.
If a person does develop sexual side effects, such as impotence or a decrease in libido, it is difficult to know whether these problems are caused by another condition or by Valtrex itself.f you are taking Valtrex and sexual side effects occur, your healthcare provider may adjust your dosage of Valtrex or prescribe another medication for your condition.
Our finding that impotence improved in men taking losartan supports the theory that angiotensin contributes to sexual dysfunction, said Ferrario. This helps debunk the myth that impotence is caused by hypertension drugs. In fact, it appears that sexual dysfunction is part of the hypertension disease process. Ferrario said losartan may improve sexual function and satisfaction in two ways: by acting on blood vessels in the penis that have been damaged by high blood pressure and by acting in the brain to improve well-being.