Heparin and heparin sodium are terms often used interchangeably, but it's essential to understand the subtle distinction between the two.

　　Heparin: Heparin refers to the general class of anticoagulant drugs derived from animal sources, primarily porcine (pig) intestines. It consists of a mixture of sulfated glycosaminoglycans with anticoagulant properties.

　　Heparin Sodium: Heparin sodium, on the other hand, specifically refers to the sodium salt form of heparin. It is the most commonly used form due to its solubility and stability. Heparin sodium is the active pharmaceutical ingredient (API) used in various heparin products like injections or infusions.

　　While the terms heparin and heparin sodium are often used interchangeably, it's important to note the technical difference. Heparin sodium is the specific form of heparin used in pharmaceutical preparations, whereas heparin can refer to the general class of anticoagulant drugs.

　　It's advisable to consult with healthcare professionals or pharmacists for accurate information on specific heparin or heparin sodium products, their uses, and proper administration.