 <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] 000 Unit/Ml Injection Solution Read the Patient Information Leaflet if available from your pharmacist before you start using heparin and each time you get a refill. If you have any questions, ask your doctor or pharmacist. This medication is given by injection into a vein or under the skin as directed by your doctor. Do not inject this medication into a muscle. The dosage and how often you use it are based on your medical condition, weight, and response to treatment. Heparin comes in many strengths. Serious (sometimes fatal) injuries have occurred when the wrong strength was used. Check that you are using the correct strength and dose before injecting this medication. If you are injecting heparin into a vein, flush the catheter/line with normal saline before and after infusing drugs that interact with heparin such as doxorubicin, droperidol, ciprofloxacin, and mitoxantrone. If you are injecting heparin under the skin, clean the injection site with rubbing alcohol. Change the injection site each time to lessen injury under the skin. If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Before using, check this product </s>