In a recent 8-month study of 1,400 monogamous couples,
researchers found that taking 500 milligrams of Valtrex daily reduced the risk of transmission by 77 percent.
In medicine, there is not enough data on the safety of the main active ingredient on the development of the fetus
in the womb, therefore, during pregnancy, Valtrex tablets can be prescribed to women
only when the expected benefit to the mother is higher than the possible complications for the embryo.