Adverse reactions of ganciclovir mainly include: i. myelosuppression, leukopenia, thrombocytopenia and anaemia; ii. central nervous system symptoms, nervousness, tremor, coma, drowsiness, vertigo and even convulsions; iii. allergic reactions, skin rashes, itching, and drug fever; iv. digestive system symptoms, diarrhoea, abdominal pain, nausea, vomiting, liver function abnormalities, or gastrointestinal tract haemorrhage; v. cardiovascular adverse reactions, resulting in elevated or lowered blood pressure and arrhythmias; vi. renal function effects, haematuria, urea nitrogen, and creatinine elevation; and vii. skin irritation of the injection site, as well as phlebitis.