Taking antiviral medication can reduce the likelihood of transmitting different types of herpes simplex virus (HSV) between partners. Antivirals are effective in suppressing viral shedding, which decreases the risk of spreading HSV to a partner during sexual contact.

It's essential for both partners to consistently take their prescribed antiviral medications as directed by their healthcare provider. However, it is important to note that while taking antivirals reduces transmission rates significantly, there still remains a small possibility of transmission even when on treatment.

To further lower the risk and protect each other from potential infections or re-infections with different strains of HSV, practicing safer sex methods like using condoms and communicating openly about one's health status are also recommended along with regular check-ups with healthcare professionals. If you have concerns regarding specific scenarios or need more information tailored directly to your situation, consulting a medical professional would be beneficial for personalized guidance.