What are the chances to transmit hsv-2 to the oral area by having oral sex if the person who has it is on valacyclovir daily?

Herpes Transmission: Valacyclovir, considered to be the best treatment option in this scenario, turns down the contagiousness by 50%.

Lesions present?: If the lesions of the herpes virus are visually present, they can still transmit the virus in spite of the rx's presence. We no longer classify hsv as type i or ii for just this reason that either variety can appear in any location with oral sex.