 <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] . If either is present, do not use the liquid. Learn how to store and discard medical supplies safely. Give aminoglycosides (such as gentamicin) separately from this medication. Do not mix together in the same IV fluid. For the best effect, use this antibiotic at evenly spaced times. To help you remember, use this medication at the same time(s) every day. Continue to use this medication until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow, which may result in a return of the infection. Tell your doctor if your condition lasts or gets worse.The side effects of Nafcillin Intravenous: If this medication is injected into a muscle, pain at the injection site may occur. If this effect lasts or gets worse, notify 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: pain/swelling/skin peeling at injection site (if this drug is injected into </s>