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[somatropin (rDNA origin) for injectable suspension]
Nutropin Depot® [somatropin (rDNA origin) for injectable suspension] is a long-acting dosage form of recombinant human growth hormone (rhGH). Somatropin has 191 amino acid residues and a molecular weight of 22,125 daltons. The amino acid sequence of the product is identical to that of pituitary-derived human growth hormone. The protein is synthesized by a specific laboratory strain of E. coli as a precursor consisting of the rhGH molecule preceded by the secretion signal from an E. coli protein. This precursor is directed to the plasma membrane of the cell. The signal sequence is removed and the native protein is secreted into the periplasm so that the protein is folded appropriately as it is synthesized.
Somatropin is a highly purified preparation. Biological potency is determined using a cell proliferation bioassay.
The Nutropin Depot (somatropin rdna origin for inj) formulation consists of micronized particles of rhGH embedded in biocompatible, biodegradable polylactide-coglycolide (PLG) microspheres. Nutropin Depot (somatropin rdna origin for inj) is packaged in vials as a sterile, white to off-white, preservative-free, free-flowing powder. Before administration, the powder is suspended in Diluent for Nutropin Depot (somatropin rdna origin for inj) (a sterile aqueous solution).
Each 18 mg 3 cc single-use vial of Nutropin Depot (somatropin rdna origin for inj) contains 18 mg somatropin, 1.6 mg zinc acetate, 1.1 mg zinc carbonate, and 91.8 mg PLG.
Each 22.5 mg 3 cc single-use vial of Nutropin Depot (somatropin rdna origin for inj) contains 22.5 mg somatropin, 2.0 mg zinc acetate, 1.4 mg zinc carbonate, and 114.8 mg PLG.
Each dosage size contains an overage of rhGH microspheres to ensure delivery of labeled contents.
Each 1.5 mL single-use vial of Diluent for Nutropin Depot (somatropin rdna origin for inj) contains 30 mg/mL carboxymethylcellulose sodium salt, 1 mg/mL polysorbate 20, 9 mg/mL sodium chloride, and sterile water for injection; pH 5.8-7.2.
What are the precautions when taking somatropin (rdna origin) for inj (Nutropin Depot)?
Last reviewed on RxList: 3/5/2009
This monograph has been modified to include the generic and brand name in many instances.
Additional Nutropin Depot Information
- Nutropin Depot Drug Interactions Center: somatropin subq
- Nutropin Depot Side Effects Center
- Nutropin Depot Overview including Precautions
- Nutropin Depot FDA Approved Prescribing Information including Dosage
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