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Research Use Only · Dosing data compiled from published literature · Not for human or veterinary use
OptimalDosages

HGH 191aa Dosage & Reconstitution

Somatropin, recombinant human growth hormone. Work out exactly what to draw for your own mix, see the doses used in research, and follow a week-by-week plan. Evidence tier: clinical.

1Set Up Your Mix

10 IU/mL
All answers assume a standard 1 mL U-100 syringe, where 1 unit = 0.01 mL. That is the usual insulin syringe and the one every number here is based on.

Your Answer — HGH 191aaYour Answer

—
20Draw To This Line
0.2That's This Many mL
5Doses In The Vial
0102030405060708090100 U-100 syringe · 1 mL · 100 units draw to 20
10 IU ÷ 1 mL = 10 IU/mL  →  2 IU ÷ 10 IU/mL = 0.2 mL  →  × 100 = 20 units—
Looks good. Draw to 20 units on a 1 mL syringe. That is an easy amount to measure, and this vial gives you 5 doses.

2Week-By-Week Plan — HGH 191aa

Start low, work up
WhenDoseHow OftenHow Many mLDraw ToNumber Of DosesPeptide Used
Adult deficiency label0.2–0.5 mg daily1× daily Set by body weight — can't be turned into a single amount to draw
Low reported 1 IU 1× daily 0.1 mL 10 u 10 doses
Mid reported 2 IU 1× daily 0.2 mL 20 u 5 doses
Upper reported 4 IU 1× daily 0.4 mL 40 u 2 doses
Weeks until the top dose
4 weeks
Peptide used getting there
14 mg
Vials you'll need
5 × 10 IU
Once you're at the top dose
37.33 mg / 4 wk · 11.2 vials
Where this plan came from
Built from this peptide's dose range
Where this came from: Built from the doses listed for this peptide below — start at the lowest and step up, using the studies cited on this page. Nobody publishes a week-by-week plan for this peptide, so we built one: the doses are the researched ones shown below, and we simply put them in order from lowest to highest. Treat it as a starting point, not an official schedule.

3Common Doses — HGH 191aa

worked out for your mix
LevelDoseHow OftenHow Many mLDraw ToDoses In Vial
Weeks 1–2 1 IU daily 0.1 mL 10 u 14 4.67 mg
Weeks 3–4 2 IU daily 0.2 mL 20 u 14 9.33 mg
Week 5 onward
per 4 weeks from here on		 4 IU daily 0.4 mL 40 u 28 37.33 mg
Please read this. These numbers come from published research. They are here as reference, not as instructions. A lot of them come from lab studies rather than studies in people, and some of these peptides have never been given to a person at all.

About HGH 191aaAbout This Peptide

GH Secretagogue
Also known as
Somatropin, recombinant human growth hormone
Class
GH Secretagogue
Route
Subcutaneous
Half-life
~2–3 h
Evidence tier
Clinical

Recombinant somatropin. An approved prescription drug with well-defined indications and a substantial adverse-effect profile including insulin resistance, oedema, arthralgia and carpal tunnel syndrome. Vials are labelled in IU; roughly 3 IU per mg.

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Where These Numbers Come From

Clinical — Human trial or approved-label dosing published
Growth hormone replacement in adults — consensus guidelines Molitch ME, et al. Endocrine Society Clinical Practice Guideline, 2011
Authoritative dosing and monitoring standard.
Find on PubMed ↗
Effects of human growth hormone in men over 60 years old Rudman D, et al. New England Journal of Medicine, 1990
The historically influential and frequently over-cited anti-ageing study; worth reading alongside the follow-up critiques.
Find on PubMed ↗
Systematic review: growth hormone in the healthy elderly Liu H, et al. Annals of Internal Medicine, 2007
The rebuttal — small body-composition change, meaningful adverse event rate.
Find on PubMed ↗

Newest Studies — —

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Not reviewed by us. This list is pulled straight from Europe PMC as papers are published. Nobody has checked whether these are any good, or whether they change anything above. The dose numbers on this page only ever change after a person reviews the evidence.

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