 <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]  regular time. Do not double the dose to catch up.  Storage For colistimethate injection, consult the product instructions and your pharmacist for storage details. If you are using colistimethate as an inhalation, store the unmixed vials at room temperature. Do not use premixed solution or prepare the solution ahead of time because this increases the risk of very serious breathing problems. Prepare the inhalation solution right before use. Discard any unused solution after 24 hours. Do not store for longer periods. Ask your health care professional for details. Do not store in the bathroom. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Efudex Topical: This medication is used on the skin to treat pre-cancerous and cancerous skin growths. Fluorouracil belongs to a class of medications known as anti-metabolites. It works by blocking the growth of abnormal cells that cause the skin condition. How to use Efudex Cream Read the Patient Information Leaflet provided by your </s>