While this advice is good, the article is discussing HSV (herpes simplex virus), not HPV (human papilloma virus), which have quite different symptoms and epidemiology. There are, as yet, no approved HSV vaccines.
To say this drug is prescription-only is plainly not true.
From the page you link:
> If you have genital herpes, you will probably be somewhat less likely to infect your partner if you use antiviral medication for prevention. The medications used for this purpose include acyclovir, famciclovir and valaciclovir. They must be taken every day over a long period of time, though. Using them as a creme or ointment is not suitable.