Heparin Sodium, Porcine 5000 Units Per mL Injection 1 mL Multiple-Dose Vials 25/Pack (RX)Note; Not for Lock Flush. For intravenous or Subcutaneous use. Heparin Sodium, Porcine 5000 Units Per mL Injection 1 mL Multiple Dose Vials is a medication used to prevent blood clots. It is made from the intestines of pigs and contains the active ingredient heparin, which is a natural anticoagulant. This injection is available in 1 mL vials and each milliliter contains 5000 units of heparin. It is intended for multiple use and is often administered