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(mecasermin [rDNA origin]) Injection


INCRELEX® (mecasermin [rDNA origin] injection) contains human insulin-like growth factor-1 (rhIGF-1) produced by recombinant DNA technology. IGF-1 consists of 70 amino acids in a single chain with three intramolecular disulfide bridges and a molecular weight of 7649 daltons. The amino acid sequence of the product is identical to that of endogenous human IGF-1. The rhIGF-1 protein is synthesized in bacteria (E. coli) that have been modified by the addition of the gene for human IGF-1.

INCRELEX® is a sterile, aqueous, clear and colorless solution intended for subcutaneous injection. Each multi-dose vial of INCRELEX® contains 10 mg per mL mecasermin, 9 mg per mL benzyl alcohol, 5.84 mg per mL sodium chloride, 2 mg per mL polysorbate 20, and 0.05M acetate at a pH of approximately 5.4.

What are the possible side effects of mecasermin (Increlex)?

Get emergency medical help if your child has any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your child's face, lips, tongue, or throat.

Call your doctor at once if your child has a serious side effect such as:

  • blurred vision, severe headache or pain behind the eyes, sometimes with vomiting;
  • pain in the hip or knee, walking with a limp;
  • seizure (convulsions); or
  • swollen tonsils -- snoring, breathing problems during sleep, pain or fullness in your ear, hearing problems.

Less serious side effects...

Read All Potential Side Effects and See Pictures of Increlex »

Last reviewed on RxList: 6/16/2014
This monograph has been modified to include the generic and brand name in many instances.

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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