HGH Fragment 191aa

What is it?

HGH-191aa is the full-length, 191-amino–acid recombinant human growth hormone – the same structure as the growth hormone your pituitary gland produces. It is FDA-approved and MHRA- licensed as a prescription medicine for GH deficiency. The compound on this page is a research reference only, not the approved pharmaceutical product.

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Key Benefits (from research)

– Improves bone density — A controlled study in adolescents with GH deficiency showed continued rhGH therapy produced significantly better bone mineral density than stopping treatment.

– Increases lean mass and reduces fat – Long–term therapy (up to 7 years) in GH-deficient adults maintained increased lean body mass and reduced adipose tissue throughout. 

– Improves cholesterol profile – Research confirms rhGH replacement reduces LDL and total cholesterol in GH-deficient populations through direct effects on liver fat metabolism. 

– Neuroprotective effects – Preclinical research shows GH receptor signalling supports motor neuron survival, relevant to ALS and other neurodegenerative research models. 

– Reduces cardiovascular risk markers – Long-term cohort studies link rhGH replacement to reduced endothelial dysfunction, reduced inflammation, and mortality rates approaching those of the general population. 

– Supports protein balance in critical illness – Research in post–surgical patients documents improved nitrogen balance and reduced protein breakdown during recovery.

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Quick Q&A

What is HGH-191aa used for in research?
It is used as the reference standard for growth hormone research, covering bone density, body composition, lipid metabolism, neuroprotection, and cardiovascular health. 

Is it approved for people?
Yes somatropin is FDA-approved and MHRA-licensed under several brand names for GH deficiency and related conditions. The recombinant reference compound sold here is for laboratory research only and is not the approved medicine. 

Important Notice
Sold for laboratory research only. Not for human use. Must be 18+.

More Information
HGH-191aa is recombinant human growth hormone comprising the full 191 amino acid sequence, identical to endogenously produced pituitary GH. Produced via recombinant DNA technology, supplied as a lyophilised powder for research applications in growth, metabolism, body composition, and GH deficiency models. For laboratory research use only.