Dosage guide · 12 IU and 32 IU vials

HGH 191AA Dosage Protocol

Somatropin · 191-amino-acid human growth hormone

The reference site's historical daily example starts at 0.6 IU in week 1 and steps up by 0.3 IU each week to 2.7 IU in week 8. With 2 mL in Peak's 12 IU vial, the concentration is 6 IU/mL, so the 0.6 IU starting amount is 10 units (0.10 mL) on a U-100 syringe. Peak publishes no validated mix or protocol for this research kit.

How oftenOnce daily

Starting dose0.6 IU

Start = units10 units

Mix2 mL BAC water

Reviewed 25 Oct 2026 · Education only, not medical advice

HGH 191AA 12 IU vial

Sold as a 120 IU kit (10 × 12 IU vials)

View on Peak Peptides

Exact Peak Peptides Australia product photo

Dosage chart How to mix Supplies About HGH 191AA References

01 · DOSAGE CHART

HGH 191AA dosage chart

Eight-week daily reference example · 12 IU vial + 2 mL BAC water

Vial

BAC water added

Concentration6 IU/mL

1 unit (U-100)0.06 IU= 0.01 mL

How oftenOnce dailySubcutaneous injection

Peak supplies bacteriostatic water but states no water volume or protocol; 2 mL is the calculator default, giving the 12 IU vial a round 6 IU/mL concentration.

HGH 191AA dosage chart for a 12 IU vial mixed with 2 mL of bacteriostatic water
Week	Daily dose	Syringe units
Week 1Start	0.6 IU	10 units0.1 mL
Week 2	0.9 IU	15 units0.15 mL
Week 3	1.2 IU	20 units0.2 mL
Week 4	1.5 IU	25 units0.25 mL
Week 5	1.8 IU	30 units0.3 mL
Week 6	2.1 IU	35 units0.35 mL
Week 7	2.4 IU	40 units0.4 mL
Week 8	2.7 IU	45 units0.45 mL

Once daily · historical reference example · subcutaneous injection

Amounts are direct conversions at 3 IU per mg from the reference site's weekly 0.2–0.9 mg example.

The historical example adds 0.3 IU after each week and stops after week 8.

Peak does not publish a product-specific dose, water volume or preparation method for either kit.

Reference-site amounts for a research kit, not a Peak product protocol or licensed somatropin regimen. Education only, not medical advice. Dose amounts adapted from HGH 191AA 10 IU vial dosage protocol (PeptideDosages.com); units are recalculated for the vial and mix selected above.

02 · HOW TO MIX

Mixing a 12 IU vial with 2 mL of BAC water

Using a 1 mL (100-unit) insulin syringe, 2 full draws of bacteriostatic water gives 6 IU/mL.

1
Add the water slowly
Wipe both rubber stoppers with an alcohol swab and let them dry. Draw 2 mL of bacteriostatic water and let it run slowly down the inside of the vial wall — not straight onto the powder.
2
Swirl gently
Swirl or roll the vial gently until the powder has dissolved. Give it a few minutes to settle if needed.
3
Don't shake it
Shaking can damage the peptide and cause foaming. Gentle swirling only.
4
Check it's fully clear
Only use it once it is fully clear with no particles. Label the vial with the date and 6 IU/mL, then store it in the fridge at 2–8 °C.

Full illustrated reconstitution guide

03 · SUPPLIES NEEDED

What you'll need

Counts follow the dosage chart above at the highest amount in each step, using a 12 IU vial mixed with 2 mL.

Length of protocol

3HGH 191AA 12 IU vials29.4 IU needed in total · 10 vials per kit

311 mL insulin syringesU-100, 27–31G · one per draw + one per vial mixed

1BAC water 10 mL bottle6 mL used for mixing

62Alcohol swabsSkin + stopper, every time

Plus an approved sharps container. Syringes and swabs are sold by Australian pharmacies — Peak Peptides and Pure Performance supply the bacteriostatic water.

HGH 191AA 120 IU kitPeak Peptides Australia

Peak Peptides Australia Bacteriostatic water 10 mL

Bacteriostatic water 10 mLPeak Peptides Australia

Pure Performance Australia Bacteriostatic water 10 mL

Bacteriostatic water 10 mLPure Performance Australia

04 · PROTOCOL DETAILS

About HGH 191AA

Protocol overview

Starting amount: 0.6 IU once daily in week 1 (0.2 mg equivalent)
How it increases: Add 0.3 IU each week, reaching 2.7 IU in week 8
Frequency: Once daily in the historical reference example
Reference length: 8 weeks
Common calculator mix: 12 IU + 2 mL = 6 IU/mL; 0.6 IU = 10 units (0.10 mL)
Peak kit formats: 10 × 12 IU = 120 IU, or 10 × 32 IU = 320 IU

Storage

Before mixing: Peak does not state a storage temperature for this research kit; follow the exact lot documentation.
After mixing: Peak gives no product-specific stability window or storage condition. Genotropin's 2–8 °C instruction applies to Genotropin, not this kit.
Never: Do not use a solution that is cloudy or contains particles.

How it works

HGH 191AA refers to the 191-amino-acid form of human growth hormone. Licensed somatropin is a recombinant form with the same amino-acid sequence as pituitary human growth hormone.

Growth hormone signalling promotes hepatic production of IGF-1, and the GH–IGF-1 axis helps regulate growth, development and metabolism. That biology does not establish a clinical outcome, quality standard or handling method for Peak's research kits.

HGH 191AA is the growth-hormone sequence itself. It is different from GH-releasing compounds such as CJC-1295 and ipamorelin, which are not kit components or interchangeable substitutes.

Illustrated mechanism explainer

What the research shows

The Genotropin label describes somatropin as a recombinant E. coli protein of 191 amino acids with the same sequence as pituitary human growth hormone.
For licensed adult growth-hormone deficiency, the Genotropin label starts a non-weight-based regimen at about 0.2 mg daily (0.6 IU) and adjusts by about 0.1–0.2 mg every 1–2 months using clinical response, adverse effects and IGF-1. This is slower and individualised compared with the weekly reference-site example charted above.
A review of adult growth-hormone-deficiency treatment reports a meta-analysis of 22 trials with 591 GH-treated and 562 placebo-treated participants: lean body mass changed by +2.61 kg versus +0.04 kg, and fat mass by −2.19 kg versus −0.31 kg. These findings concern diagnosed deficiency treated with licensed GH, not Peak's kit.
The Australian ARTG separately lists Genotropin 5 mg somatropin as a medicine. Peak describes its 12 IU and 32 IU HGH kits as research material, not a named prescription-medicine formulation.
The Peak listing says the 120 IU kit is 10 vials labelled 12 IU each and the 320 IU kit is 10 vials labelled 32 IU each. It provides bacteriostatic water but no stated water volume, final concentration, stability period or protocol.

Reported side effects

In Genotropin clinical data from 1,145 adults with growth-hormone deficiency, most adverse effects were mild to moderate fluid-retention symptoms, including peripheral swelling, joint pain, limb pain or stiffness, oedema, muscle pain and altered sensation; they were often early and responsive to dose reduction.
Over the first 6 months in the Genotropin adult data, peripheral swelling was reported by 17.5% of treated participants versus 5.1% with placebo, arthralgia by 17.3% versus 4.2%, peripheral oedema by 10.8% versus 2.6%, and paraesthesia by 9.6% versus 1.9%.
Licensed somatropin is contraindicated with active malignancy and acute critical illness. The Genotropin label also warns that short-term overdose can initially cause low then high blood glucose, while longer exposure can cause features of growth-hormone excess.
These licensed-product safety data do not establish the safety, identity, sterility or activity of Peak's research material.

Important notes

Peak describes both HGH 191 kits as research material not for human or animal use. Their shared 191AA terminology does not make either kit an approved prescription somatropin product.
Genotropin is a separately registered Australian somatropin medicine, and Norditropin is a separate prescription somatropin pen. Do not transfer their device, mixing, storage, discard or dose instructions to Peak's kit.
Prohibited in sport at all times: WADA lists growth hormone, its analogues and fragments in category S2.
The Peak listing does not state a final water volume, product-specific storage condition or validated stability period. A report for a different product or lot does not establish those facts for the vial in hand.
Never use a mixed vial that is cloudy or has particles in it.

How many mg is 10 IU of HGH?

For somatropin documented at 3 IU per 1 mg, a labelled 10 IU corresponds to approximately 3.33 mg of nominal somatropin mass (10 ÷ 3). This convention comes from an Australian approved-medicine product information —not a lab assay or product instruction for Peak's research kits.

Activity labels converted to nominal mass only where the specific somatropin product documents 3 IU per mg
Label context	IU	Nominal mg at 3 IU/mg
Illustrative 10 IU vial (not a Peak kit vial)	10 IU	≈ 3.33 mg
Peak 120 IU kit · one 12 IU vial	12 IU	≈ 4 mg
Peak 320 IU kit · one 32 IU vial	32 IU	≈ 10.67 mg
Peak 120 IU kit · all 10 vials together	120 IU	≈ 40 mg
Peak 320 IU kit · all 10 vials together	320 IU	≈ 106.67 mg

Swipe horizontally to see all table columns.

Activity, mass and liquid volume are different units. A 120 IU or 320 IU kit is a ten-vial total, not one vial or an administered dose. These equivalents are conditional arithmetic—not a verified content assay, dilution volume, mg/mL concentration, U-100 syringe marking, human dose or endorsement of using a research-only vial. Check the actual label and qualified product documentation.

Read the full sourced IU-to-mg questions and answers

Injection basics

Use a new sterile 1 mL (100-unit) U-100 insulin syringe, 27–31G, every time — never reuse or share.
Wipe the vial stopper and the skin with an alcohol swab and let both dry first.
Inject under the skin (subcutaneously) of the abdomen, thigh or upper arm, and rotate sites.
Put used syringes straight into an approved sharps container — the NDSS lists Australian disposal options.

Guidance: World Health Organization · National Diabetes Services Scheme (NDSS)

05 · QUICK ANSWERS

HGH 191AA questions

How many units is 0.6 IU of HGH 191AA?

With the guide's default 2 mL in a 12 IU vial, the concentration is 6 IU/mL. A 0.6 IU amount is 10 units, or 0.10 mL, on a U-100 syringe.

How many units is 2.7 IU of HGH 191AA?

With the default 12 IU vial and 2 mL mix at 6 IU/mL, 2.7 IU is 45 units, or 0.45 mL, on a U-100 syringe.

How much bacteriostatic water is used for a 12 IU HGH 191AA vial?

This calculator uses 2 mL as its default, giving 6 IU/mL. Peak supplies bacteriostatic water but does not state a water volume or preparation method for this kit, so 2 mL is not a product instruction.

How long does a 12 IU HGH 191AA vial last?

At the chart's 0.6 IU starting amount, a 12 IU vial contains 20 daily amounts. At the 2.7 IU week-8 amount, it contains about 4.4 daily amounts.

06 · SOURCES