Ipamorelin is a selective pentapeptide Growth Hormone Secretagogue (GHS) — a ghrelin mimetic that binds to the ghrelin receptor (GHSR) in the pituitary gland, triggering selective GH release. It is considered one of the cleanest GH peptides available due to its highly selective action — it raises GH without significantly spiking cortisol, prolactin, or ACTH, unlike older GHRPs (GHRP-2, GHRP-6).
Dosing
Standard research protocol: 200–300 mcg, 1–3x daily, subcutaneous injection. The plasma half-life is approximately 2 hours, which is why multiple daily doses are often used to maximize GH pulses. CalculatePeptide
Most Common Stack: CJC-1295 + Ipamorelin
Ipamorelin is almost always paired with CJC-1295 (no DAC) — a GHRH analog. The combination works synergistically:
- CJC-1295 — amplifies the GH pulse signal
- Ipamorelin — triggers the release
Together they produce a stronger, more sustained GH release than either alone, while maintaining ipamorelin’s clean, selective profile.
How It Compares to Tesamorelin
| Ipamorelin | Tesamorelin | |
|---|---|---|
| Mechanism | Ghrelin receptor agonist (GHSR) | GHRH analog |
| FDA Approved | No | Yes (HIV lipodystrophy only) |
| Selectivity | Very selective (no cortisol spike) | Selective |
| Common dose | 200–300 mcg 1–3x/day | 2 mg once daily |
| Stability (reconstituted) | ~28 days | ~14–21 days |
| Monthly cost (research) | ~$30–$90 | ~$120–$300 |
| Best use | GH pulse optimization, recovery, sleep | Visceral fat reduction |
USES
Claude responded: Here’s a comprehensive breakdown of the uses for all the peptides discussed:
Peptide Uses — Full Comparison
💉 Bacteriostatic Water
| Use | Details |
|---|---|
| Reconstitution | Dissolves lyophilized peptide powders for injection |
| Multi-dose diluent | Preservative allows vial reuse up to 28 days |
| Drug dilution | Dilutes concentrated injectable medications |
🔵 Retatrutide (Triple Agonist — GLP-1 + GIP + Glucagon)
| Use | Details |
|---|---|
| Weight loss | Most potent investigational weight-loss peptide — up to 28–30% body weight reduction |
| Type 2 diabetes | Improves blood sugar control via GLP-1 and GIP pathways |
| Visceral fat reduction | Glucagon receptor activation directly targets fat burning |
| Metabolic syndrome | Addresses multiple metabolic pathways simultaneously |
| Knee osteoarthritis | TRIUMPH-4 studied it alongside obesity treatment |
| Cardiovascular | Ongoing trials exploring CV risk reduction |
🟢 Tirzepatide (Dual Agonist — GLP-1 + GIP)
| Use | Details |
|---|---|
| Type 2 diabetes | FDA-approved as Mounjaro — improves insulin sensitivity and blood sugar |
| Weight loss / obesity | FDA-approved as Zepbound — up to 22.5% body weight reduction |
| Cardiovascular risk | Studies show reduced CV events in obese patients |
| NASH / fatty liver | Reduces liver fat in metabolic-associated steatohepatitis |
| Sleep apnea | Studied for improvement in obesity-related sleep apnea |
| Polycystic ovary syndrome (PCOS) | Off-label use for insulin resistance and weight in PCOS |
🟡 Tesamorelin (GHRH Analog)
| Use | Details |
|---|---|
| HIV lipodystrophy | FDA-approved — reduces excess abdominal fat in HIV+ adults |
| Visceral fat reduction | Off-label — targets deep belly fat specifically |
| Growth hormone deficiency | Stimulates natural GH release from pituitary |
| Cognitive function | Research suggests improved memory and cognition in older adults |
| Liver health | Studies show reduced liver inflammation and scarring (NASH) |
| Body composition | Increases lean mass, reduces fat mass |
| Anti-aging | Restores more youthful GH secretion patterns |
🟣 Ipamorelin (Selective GHRP / Ghrelin Mimetic)
| Use | Details |
|---|---|
| GH optimization | Stimulates natural, pulsatile GH release without cortisol spike |
| Muscle growth | Increases lean muscle mass via GH-IGF-1 axis |
| Fat loss | GH elevation promotes lipolysis (fat breakdown) |
| Recovery & healing | Accelerates tissue repair, reduces recovery time |
| Sleep quality | GH pulses are largest during deep sleep — ipamorelin enhances this |
| Anti-aging | Combats age-related GH decline |
| Bone density | GH supports bone mineral density over time |
| Gut motility | Ghrelin receptor activity improves GI motility (studied in gastroparesis) |
Side-by-Side: Primary Use Cases
| Peptide | #1 Use | #2 Use | #3 Use |
|---|---|---|---|
| Retatrutide | Weight loss | Diabetes | Metabolic health |
| Tirzepatide | Diabetes / Weight loss | Cardiovascular | Fatty liver |
| Tesamorelin | Visceral fat | GH deficiency | Cognition |
| Ipamorelin | GH optimization | Muscle / Recovery | Sleep / Anti-aging |
How They Work Together (Common Stacks)
| Stack | Purpose |
|---|---|
| Ipamorelin + CJC-1295 | Maximum GH pulse — most popular GH stack |
| Tesamorelin + Ipamorelin | Visceral fat + GH optimization |
| Tirzepatide + Ipamorelin | Metabolic weight loss + muscle preservation |
| Retatrutide + Ipamorelin | Aggressive fat loss + lean mass preservation |
| Dosage | 2 ML, 5 ML, 10 ML |
|---|
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