 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  your doctor. Do not skip any doses or stop using this medication even for a short time unless directed to do so by your doctor. Skipping or stopping treatment without approval from your doctor may make the infection worse. Keep all medical and laboratory appointments. Tell your doctor if your condition worsens (such as worsening vision).The side effects of Ganciclovir Intravenous: See also Warning section. Diarrhea, upset stomach, dizziness, drowsiness, unsteadiness, shaking (tremors), or pain/redness/irritation at the injection site may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as confusion, hallucinations), signs of kidney problems (such as change in the amount of urine), seizures. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, </s>