I was sick last week, chills, aches, unbelievable fatigue. Had been on Augmentin for a sinus infection, just finishing up the script, and take Crestor, Nexium, and Zyrtec on a regular basis. Symptoms started a few days after starting generic Zyrtec, which also caused unbelievable dryness that felt like I was dehydrated (no vomiting, though). A day after the chills, I noticed my urine was dark and my stools were very light, almost gray, and I started getting very itchy but no rash.