H191 (HGH 191AA) UK Guide: Research, Strengths & Price

Q: How much is H191 in the UK?

Short answer: The MyPep H191 12IU research vial is £24.99.

Q: What does 191AA mean?

Short answer: It means the growth hormone has 191 amino acids, the same sequence as natural pituitary growth hormone.

Q: Is MyPep H191 a medicine?

Short answer: No. It is supplied strictly for laboratory research use only.

H191 (HGH 191AA) in the UK (2026): what it is, strengths and prices, how it is studied, storage and UK status.

H191 (HGH 191AA) UK Guide (2026)

This H191 (HGH 191AA) UK guide explains what H191 (HGH 191AA) is, the strengths and prices available at MyPep Biotech, how it is studied, how to store it in the lab, and its UK status. For laboratory research use only. Not for human or veterinary use.

What is H191 (HGH 191AA)?

H191 refers to 191-amino-acid human growth hormone, the same sequence as the main form of growth hormone made by the pituitary gland. Recombinant 191AA growth hormone is the reference compound in growth hormone and IGF-1 research.

Free Peptide Calculator UK

Working out reconstitution? Use our peptide calculator to find the bacteriostatic water volume, concentration per ml and pen clicks for any vial or pen strength.

H191 (HGH 191AA) UK: key facts

Type: 191-amino-acid protein hormone
Measured in: international units (IU)
Acts on: growth hormone receptor, driving IGF-1 production
Compared with: GHRH analogues such as tesamorelin and CJC-1295, which stimulate natural release
Sport: prohibited under WADA rules
MyPep format: 12IU research vial, £24.99

H191 (HGH 191AA) strengths and prices UK

Product	Price	Cost per mg
H191 (HGH 191AA) 12IU vial	£24.99	—

See the full H191 (HGH 191AA) Price UK guide.

How H191 (HGH 191AA) is studied

Researchers use 191AA growth hormone to study growth hormone receptor signalling, IGF-1, body composition, metabolism and ageing, and as a reference when studying growth hormone secretagogues. See also Tesamorelin and CJC-1295 & Ipamorelin.

Read the H191 (HGH 191AA) Research Studies guide.

Reconstitution and storage

Store unopened vials at 2–8°C, away from light.
Reconstitute with bacteriostatic water, adding it slowly down the side of the vial. Swirl gently – do not shake.
Record the date and batch number in your lab notes.
Use our free peptide calculator to work out concentrations.

UK status

Growth hormone is a prescription-only medicine in the UK. MyPep Biotech H191 is a research material only, not a licensed medicine, and not for human or veterinary use.