Adverse reactions of ganciclovir mainly include: a, myelosuppression, leukopenia, thrombocytopenia, and anemia; b, central nervous system symptoms, nervousness, tremor, coma, drowsiness, vertigo, and even convulsions; c, allergic reactions, skin rashes, itching, and drug fever; d, gastrointestinal symptoms, diarrhea, abdominal pain, nausea, vomiting, liver function abnormalities, or gastrointestinal bleeding; e, cardiovascular adverse reactions, resulting in elevated or lowered blood pressure, and cardiac arrhythmia; f, renal function effects, hematuria, urea nitrogen, and creatinine elevation; vii, skin irritation of the injection site, as well as phlebitis.