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.
Valtrex is a popular and effective medication for herpes. It prevents future recurrences, limits the severity of herpes symptoms, and reduces transmission of herpes by blocking herpes shedding. But Valtrex is a pharmaceutical medication, and like most pharmaceutical medications, Valtrex is prone to side effects.altrex is not known to have any specific drug interactions. However, due to the risk of renal failure, those taking any drugs that affect kidney function should take extra precaution before starting Valtrex.