Hey guys, I just wanted to share are some symptoms I'm experiencing with Valtrex. I'm on my third week and I felt some great improvement regarding fatigue/brain fog and headaches. However, for the last couple days I've noticed the headaches are coming back, just not as strong as before I started taking Valtrex. I've also noticed the fatigue and brain fog creeping in the last couple days? Is this normal? Is the Valtrex starting to fail already? Could this possibly be die-off? It's discouraging to begin to see improvement then start to lose it.