I was given a script for Valcyte for the viruses I'm fighting off - EBV, parvo (or rather, not fighting off) and went to download a coupon to save money. I read the following: WARNING: HEMATOLOGIC TOXICITY, CARCINOGENICITY, TERATOGENICITY, AND IMPAIRMENT OF FERTILITY Clinical toxicity of Valcyte, which is metabolized to ganciclovir, includes granulocytopenia, anemia, and thrombocytopenia In animal studies, ganciclovir was carcinogenic, teratogenic, and caused aspermatogenesis Scared me out of my wits. Already dealing with too much - don't need cancer on top of it. Has anyone used this or Famvir successfully? I wonder if it's safe in short-term, as it didn't specify.