Overview
Ipamorelin is a synthetic pentapeptide functioning as a selective growth hormone secretagogue that mimics ghrelin action at the GH receptor. Its primary advantage involves stimulating growth hormone release while “minimizing off-target hormones” and avoiding ACTH or cortisol elevation.
Key Characteristics
– Type: Selective GH secretagogue
– Structure: Five amino acid peptide
– Mechanism: Binds to GHSR-1a receptor; stimulates pituitary GH release
– Half-life: Approximately 1.5–2.5 hours
– GH Peak Time: ~40 minutes post-injection
– Return to Baseline: 2–3 hours
Reconstitution
Standard Preparation (3.0 mL bacteriostatic water per 5mg vial)
| Step | Instruction |
|---|---|
| 1 | Draw 3.0 mL bacteriostatic water with sterile syringe |
| 2 | Inject slowly down vial wall; avoid foaming |
| 3 | Gently swirl/roll until dissolved (no vigorous shaking) |
| 4 | Label and refrigerate at 2–8°C, protected from light |
Resulting Concentration: ~1.67 mg/mL
Dosing Protocol
Gradual Titration Approach
| Week | Daily Dose | Units (U-100 Syringe) | Volume (mL) |
|---|---|---|---|
| 1–2 | 100 mcg | 6 units | 0.06 mL |
| 3–4 | 150 mcg | 9 units | 0.09 mL |
| 5–8 | 200 mcg | 12 units | 0.12 mL |
| 9–12 | 250 mcg | 15 units | 0.15 mL |
Administration: Once daily via subcutaneous injection, ideally 30–60 minutes before bedtime on an empty stomach
Cycle Duration: 8–12 weeks (optional extension to 16 weeks); follow with 2–4 week pause for receptor resensitization
Storage Instructions
Lyophilized (Powder)
– Short-term: 2–8°C (35.6–46.4°F)
– Long-term: −20°C (−4°F) in dry, dark conditions
Reconstituted Solution
– Refrigerate at 2–8°C (35.6–46.4°F)
– Use within approximately 4 weeks with bacteriostatic water
– For extended storage: freeze aliquots at −20°C and avoid repeated thaw cycles
Temperature Note: Allow vials to reach room temperature before opening to reduce condensation uptake
Injection Technique
Site Selection
Rotate between: abdomen (2 inches from navel), outer thighs, upper outer arms, and flank/hip areas
Procedure
1. Clean hands and work surface
2. Swab vial stopper and injection site with alcohol; allow to dry
3. Draw calculated dose into insulin syringe; eliminate air bubbles
4. Pinch skin fold between thumb and forefinger
5. Insert needle at 45–90° angle into subcutaneous tissue
6. Inject slowly and steadily (do not aspirate for SC injections)
7. Withdraw needle at same angle
8. Apply gentle pressure with clean cotton pad; do not rub vigorously
9. Dispose of syringe immediately in sharps container
Mechanism of Action
Ipamorelin binds the growth hormone secretagogue receptor and “stimulates the pituitary gland to release endogenous growth hormone in a pulsatile manner.” Unlike earlier GH-releasing peptides, it demonstrates high selectivity without significantly affecting ACTH, cortisol, or prolactin at therapeutic doses.
Research indicates that chronic daily exposure does not produce significant desensitization of GH release mechanisms, though cycling remains recommended as a precaution.
The peptide also demonstrates pro-motility effects in the gastrointestinal tract through GHSR-1a receptors, potentially accelerating gastric emptying.
Reported Benefits
– Supports increases in lean body mass and recovery processes
– Enhances fat metabolism and favorable body composition changes
– Maintains high selectivity for GH with minimal hormonal off-target effects
– May support improved gastric motility and digestive function
– Generally well-tolerated with low side-effect incidence at typical doses
Potential Side Effects
– Occasional mild injection-site reactions (redness, swelling)
– Rare reports of water retention
– Infrequent appetite stimulation
Complementary Lifestyle Factors
– Balanced, protein-adequate diet supporting muscle synthesis
– Resistance training and cardiovascular exercise
– 7–9 hours of quality nightly sleep (GH naturally peaks during deep sleep phases)
– Stress management to prevent cortisol elevation that blunts GH response
– Empty stomach protocol: avoid food 2–3 hours before and 30–60 minutes after injection
Supply Planning
For an 8–16 week protocol:
| Duration | Vials | Insulin Syringes | Bacteriostatic Water | Alcohol Swabs |
|---|---|---|---|---|
| 8 weeks | 2 | 56 | 1x10mL bottle | 2×100-count boxes |
| 12 weeks | 4 | 84 | 2x10mL bottles | 2×100-count boxes |
| 16 weeks | 5 | 112 | 2x10mL bottles | 3×100-count boxes |
Important Notes
– Use new sterile insulin syringes for each injection
– Systematically rotate injection sites to prevent local irritation or tissue damage
– Document daily dosing and site rotation for consistency
– Consistent daily timing maximizes effects given the peptide’s short half-life
Disclaimer
This information is intended for therapeutic educational purposes only and does not constitute medical advice, diagnosis, or treatment. For research use only.