HGH 191AA (Somatropin) (36 IU Vial) Dosage Protocol
HGH 191AA is recombinant human growth hormone — a 191-amino-acid polypeptide identical to endogenous pituitary GH. Used clinically for growth-hormone deficiency and studied for body composition, recovery, and aging. This page covers the 36 iu vial.
⚡ Quickstart Highlights
Dosing & Reconstitution Guide
Standard / Gradual Titration (3 mL = 12 IU/mL)
| Week | Daily Dose (IU) | U-100 Units (mL) |
|---|---|---|
| Week 1 | 0.6 IU | 5 units (0.05 mL) |
| Week 2 | 0.9 IU | 7.5 units (0.075 mL) |
| Week 3 | 1.2 IU | 10 units (0.1 mL) |
| Week 4 | 1.5 IU | 12.5 units (0.125 mL) |
| Week 5 | 1.8 IU | 15 units (0.15 mL) |
| Week 6 | 2.1 IU | 17.5 units (0.175 mL) |
| Week 7 | 2.4 IU | 20 units (0.2 mL) |
| Week 8 | 2.7 IU | 22.5 units (0.225 mL) |
Frequency: Once daily by subcutaneous injection, preferably at bedtime to follow the natural nighttime GH pulse. Rotate sites to reduce lipoatrophy. The 8-week schedule climbs by about 0.3 IU per week.
Extended 12-Week Protocol (Optional)
| Week | Daily Dose (IU) | U-100 Units (mL) |
|---|---|---|
| Week 9 | 3 IU | 25 units (0.25 mL) |
| Week 10 | 3.3 IU | 27.5 units (0.275 mL) |
| Week 11 | 3.6 IU | 30 units (0.3 mL) |
| Week 12 | 3.9 IU | 32.5 units (0.325 mL) |
Note: Weeks 9–12 reach 3.0–3.9 IU daily, a range explored in performance and metabolic research. Higher amounts raise the likelihood of side effects such as water retention, joint discomfort, and numbness or tingling. A 16-week extension reaching about 5.1 IU daily appears in advanced protocols and calls for appropriate monitoring.
Reconstitution Steps
- Draw 3.0 mL bacteriostatic water with a sterile syringe.
- Inject slowly down the vial wall; avoid foaming.
- Gently swirl or roll until dissolved. Do not shake; vigorous agitation can damage the protein.
- Label and refrigerate at 2–8 °C (35.6–46.4 °F), protected from light.
Doses are shown in IU only. Educational purposes only; not medical advice. For research use only. Not for human consumption.
Supplies Needed
Plan based on an 8–16 week daily protocol with gradual titration (one injection per day).
| Item | 8 weeks | 12 weeks | 16 weeks |
|---|---|---|---|
| HGH 191AA vials (36 IU each) | 3 vials (92.4 IU total) | 6 vials (189 IU total) | 9 vials (319.2 IU total) |
| Insulin syringes (U-100) | 56 syringes | 84 syringes | 112 syringes |
| Bacteriostatic water (10 mL bottles) | 9 mL → 1 bottle | 18 mL → 2 bottles | 27 mL → 3 bottles |
| Alcohol swabs | 112 swabs → 2 × 100-count boxes | 168 swabs → 2 × 100-count boxes | 224 swabs → 3 × 100-count boxes |
Storage Instructions
| State | Temperature | Duration |
|---|---|---|
| Lyophilized | −20°C (−4°F) | Up to 24 months, dry & dark |
| Reconstituted | 2–8°C (35–46°F) | Up to 14 days, protect from light |
Important Notes
How This Works
HGH 191AA is a 191-amino-acid recombinant peptide identical in sequence to native human pituitary GH (somatropin). After subcutaneous injection, GH binds the dimeric GH receptor on hepatocytes, adipocytes, myocytes, and chondrocytes. Receptor activation triggers JAK2/STAT5 signaling that drives IGF-1 production from the liver — IGF-1 mediates most of GH's anabolic effects.
Native GH release is pulsatile with the largest pulse during slow-wave sleep. Exogenous somatropin produces a single steady-state pulse per dose. Many protocols favor evening dosing to roughly approximate the natural overnight pulse.
Potential Benefits & Side Effects
Potential Benefits
- Reductions in adipose tissue, particularly visceral fat.
- Increases in lean body mass over 6–12 months.
- Improved exercise capacity and recovery in some studies.
- Improved skin thickness and dermal collagen content.
- Restoration of normal IGF-1 in deficiency states.
Side Effect Profile
- Fluid retention — peripheral edema, hands and feet.
- Joint pain and stiffness.
- Carpal tunnel syndrome.
- Insulin resistance and elevated fasting glucose at higher doses.
- Headache; rare intracranial pressure changes.
- Theoretical concerns with active malignancy.
Lifestyle Factors
- Evening dosing aligns with natural overnight GH pulse.
- Avoid eating for 1–2 hours after injection — insulin blunts GH efficacy.
- Resistance training amplifies anabolic effects.
- Aerobic exercise improves insulin sensitivity, offsetting glucose intolerance.
- Sleep 7–9 hours — most natural GH/IGF-1 work occurs in slow-wave sleep.
Injection Technique
- Subcutaneous into abdomen, thigh, or upper arm. Rotate sites daily.
- 90° angle with short (4–8 mm) insulin needle.
- Bring vial to room temperature 15 min before injecting.
- Reconstituted GH is fragile — swirl gently, do not shake.