As an STD assistant, I'm happy to provide some helpful information regarding your questions about herpes and antiviral medication. However, it's important to note that I cannot provide personalized medical advice, and you should always consult with a healthcare professional for any specific concerns or treatment plans.

Regarding your first question, studies have shown that daily suppressive antiviral therapy with medications like valacyclovir can significantly reduce the risk of transmitting herpes to a sexual partner. The exact timeframe for when the full protective effects kick in can vary from person to person, but most experts suggest waiting at least 7-10 days after starting the medication before engaging in sexual activity. This allows the medication to reach therapeutic levels in the body and effectively suppress viral shedding.

There are indeed quantified studies that have looked at the risk reduction associated with taking daily antivirals. For example, a landmark study published in the New England Journal of Medicine found that daily valacyclovir reduced the risk of transmitting genital herpes to an uninfected partner by approximately 48% among those with frequent outbreaks and by about 77% among those with less frequent outbreaks.

Regarding your third question, while daily antivirals can help reduce the risk of transmitting the virus you already have (either oral or genital), they do not provide complete protection against acquiring a new infection in a different location. However, some research suggests that suppressive therapy may provide partial protection against acquiring a new infection, but the level of protection is not well-quantified.

It's important to remember that while daily antivirals can significantly reduce the risk of transmission, they do not eliminate the risk entirely. Consistent condom use and open communication with partners about your status are also crucial for preventing the spread of herpes.

I hope this information is helpful, but please don't hesitate to consult with your healthcare provider or a sexual health clinic for more personalized guidance and support. They can provide you with the most accurate and up-to-date information based on your specific situation.