Natural hGH has 191 amino acid residues. hGH made by genetic engineering has two types: those with 191 amino acids and those with 192 amino acids. Below is a list of hGH brands that known to have either 191 or 192 amino acids. |
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Brand name |
Manufacturer |
191AA hGH |
Jintropin™ |
GenSci |
Saizen™ |
Serono |
Norditropin™ |
Novo Nordisk |
Genotropin™ |
Pharmacia AB |
Nutropin™ |
Genentech |
192AA hGH |
Protropin™ |
Genentech |
Fitropin™ |
Kexing Biotech |
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Jintropin™ is the only 191AA hGH brand in China |
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Jintropin™ is the only officially approved hGH in China that are produced by its patented secretion technology to make it purely 191 amino acid hGH. |
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Most of other Chinese brands, although claim to be 191 amino acid hGH, in fact are still containing small amount of 192 amino acid hGH in there because of the technology they use. (See published paper, The many faces of growth hormone, Summer 2005, Body of Science) |
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Ansomone and hygetropin: they all claim to be 191 hGH. But in their government approved chinese product instuctions, there is no such information available. Only in Jintropin™¨s government approved product instruction, there is clear indication that jintropin™ is 191 hGH. |
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What¨s the advantage of 191 amino acid hGH? |
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1.
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More stable |
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Jintropin™, because of being purely 191 amino acid hGH, is the only hGH in China that can be stored at room temperature for a long time and are stable at 37°C for about 2 months. |
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Raising much less antibodies |
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191 amino acid hGH proteins are identical to the natural hGH, therefore pure 191 hGH causing very little antibody formation in the body. However the 192 amino acid hGH is different from the natural hGH, thus causing stronger antibodies formations in a majority of people. These antibodies will make the hGH stop functioning. This is why the US FDA is currently banning 192 amino acid hGH products now. (Click here to learn more about antibodies. ) |
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