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Description
11 DESCRIPTION
Heparin is a heterogenous group of straight-chain anionic mucopolysaccharides, called glycosaminoglycans, possessing anticoagulant properties. It is composed of polymers of alternating derivations of α-D-glucosamido (N-sulfated O-sulfated or N-acetylated) and O-sulfated uronic acid (α-L-iduronic acid or β-D-glucuronic acid).
Structure of heparin sodium (representative subunits):
HEPARIN SODIUM INJECTION is a sterile preparation of heparin sodium derived from porcine intestinal tissue, standardized for anticoagulant activity, in water for injection. It is intended for intravenous or deep subcutaneous administration. The potency is determined by a biological assay using a USP reference standard based on units of heparin activity per milligram.
For formulations preserved with benzyl alcohol, each mL of the 1,000 UPS units and 5,000 USP units per mL preparations contains: heparin sodium 1,000 UPS units or 5,000 USP units; 9 mg sodium chloride; 9.45 mg benzyl alcohol added as preservative. Each mL of the 10,000 USP units per mL preparations contains: heparin sodium 10,000 USP units; 9.45 mg benzyl alcohol added as preservative.
The preservative-free product contains (per mL): 1,000 USP units of heparin sodium and 9 mg sodium chloride.
When necessary, the pH of HEPARIN SODIUM INJECTION is adjusted with hydrochloric acid and/or sodium hydroxide. The pH range is 5.0 to 7.5.
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