He's not going to
become resistant to <span style = 'background-color: #dae8f4'>valtrex</span>
. The drug does
that way. If he <span style = 'background-color: #dae8f4'>take</span>s
it as prescribed (??500 mg q.d.), he will significantly reduce his shedding, which is how
he can prevent transmitting it to
you. If you guys are also using condoms, you are essentially coming close to
0 risk of transmission, or pretty darn close.
So basically, if he take
s the medication, it works. If he sto
ps taking it or skips doses, shedding will start increasing again.