 <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]  forms of birth control (such as birth control pills and condoms) during treatment and for at least 30 days after stopping the medication. Consult your doctor for more details. It is unknown if this medication passes into breast milk. Because of the possible risk to the infant, breast-feeding while using this drug is not recommended. Consult your doctor before breast-feeding. If you have HIV, do not breast-feed because breast milk can transmit HIV.The interactions of Valganciclovir Oral: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: didanosine, imipenem/cilastatin, maribavir. You may be taking other drugs that decrease bone marrow function and lower your number of blood cells (such as cancer chemotherapy, trimethoprim/sulfamethoxazole, zidovudine) or other drugs that may cause kidney </s>