Tickbite - Yes, arginine and lysine use the same pathways in the body, so by taking supplements for one and what we may get in our diet has the potential/likelihood of blocking the absorption of the other.
But, if a person has active viruses, then arginine is NOT what you want to supplement, as it will allow those viruses that use it to really have a good time.....at our expense! I'm not sure if it would be enough to stop healing if someone was taking an antiviral or not - but personally, I won't use arginine at all and supplement with lysine daily to keep my viruses in check.
And, as I like to do - here are a couple of articles so you all know it's not just something I alone am saying!! LOL!
www.umm.edu/health/medical/altmed/supplement/lysinewww.livestrong.com/article/474717-arginine-lysine/