 <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]  store your brand, or ask your pharmacist. Do not freeze. Keep the bottle upright and tightly closed when not in use. 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 Leucovorin Calcium Oral: This medication is used to treat or prevent serious blood cell disorders (such as thrombocytopenia, neutropenia, anemia) caused by certain drugs (folic acid antagonists such as methotrexate, trimethoprim, pyrimethamine). How to use Leucovorin Calcium Take this medication by mouth with or without food as directed by your doctor, usually every 6 hours or once daily. The dosage is based on your medical condition and response to treatment. Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day. Tell your doctor if you are unable to take this medication because of nausea/vomiting. You may need to be switched to the injection form of this medication </s>