Brand: Pfizer
Genotropin® is Pfizer’s brand of somatropin, the man-made form of human growth hormone. It’s identical to the growth hormone the pituitary gland makes, and it stimulates growth and cell reproduction. The 12 mg GoQuick pen is the multidose version. The medicine is mixed once, when a new pen is started, and then used over several injections. The pen is sold as one pen per pack. Doctors prescribe Genotropin to children who don’t grow because of low growth hormone, to children with Turner syndrome, Prader-Willi syndrome or idiopathic short stature, to children born small for their gestational age, and to adults with growth hormone deficiency. Growth hormone is also discussed in sports and anti-aging circles, but that use isn’t approved.
Genotropin® 12 mg is recombinant somatropin, a protein that matches natural human growth hormone. The pen holds the freeze-dried powder and its solvent in separate chambers, and they’re mixed once to make the solution. Once mixed, the solution contains 12 mg of somatropin per mL. It’s given by injection under the skin, and it must be kept refrigerated. Pfizer’s own labeling gives 12 mg as 36 IU, so the “32 IU” in the name comes from an older conversion.
It is a Pfizer growth hormone product in a prefilled GoQuick pen that contains 12 mg of somatropin.
It’s the same 12 mg of somatropin. The IU figure depends on the conversion used. Pfizer’s current labeling uses 1 mg = 3 IU, so 12 mg is 36 IU. Some older labels and listings use a conversion of about 2.7 IU per mg, which gives about 32 IU.
It’s used to treat growth failure in children caused by growth hormone deficiency, Turner syndrome, Prader-Willi syndrome, idiopathic short stature and being born small for gestational age. It’s also used for growth hormone deficiency in adults.
No. It’s a peptide hormone. Steroids work on androgen receptors, and growth hormone works through its own receptors and through IGF-1.
Not for growth. In children whose growth plates have closed, it isn’t used to promote growth. In adults, it’s used for growth hormone deficiency.
They are the same 12 mg Pfizer product. The difference is only how the IU figure is written.
Yes. Genotropin is approved by the FDA as a prescription medicine for the conditions listed above. Use outside those conditions, such as for performance or anti-aging, is not approved.
No. Genotropin is a prescription medicine, and non-prescribed use is regulated or prohibited in most countries.
Pfizer (Genotropin®)
Novo Nordisk A/S (Norditropin® FlexPro®)
Novo Nordisk A/S, Denmark (Norditropin® NordiLet®)
Pfizer
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