Not medical advice. Talk to your provider before using any peptide.
Full disclaimerPeptide Schedule Research TeamReviewed Apr 20268 Citations
Ghrelin28 residuesGSSFLSPEHQRVQQRKESKKPPAKLQPREach bubble = one amino acid. Size = residue mass. Color = chemical class.Ghrelin is the body's only circulating appetite-stimulating hormone, backed by 10,000+ published studies. Clinical cachexia trials confirm appetite restoration and lean mass preservation. The native form degrades in minutes; synthetic GHS-R1a agonists like GHRP-2 and MK-677 deliver the same receptor activation with stable pharmacokinetics.
50mcg · Daily
Summary: Add 2mL BAC water to your 5mg vial. Draw to 2.0 units on a U-100 syringe for a 50mcg dose. This vial will last 100 doses.
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| Level | Dose / Injection | Frequency |
|---|---|---|
| Beginner | 50mcg | Daily |
| Moderate | 100mcg | 2x Daily |
| Aggressive | 200mcg | 2x Daily |
Native ghrelin is a lab chemical, not a consumer peptide. You won't find it at the usual research peptide vendors. The only real sources are laboratory suppliers like Tocris Bioscience or AnaSpec, and they charge $253+ per milligram. That price is telling you something about the practical reality of this compound. For the 5 mg vial at 2 mL bacteriostatic water: each 0.1 mL (10 units on an insulin syringe) delivers 250 mcg. A 50 mcg beginner dose is 2 units. A 100 mcg moderate dose is 4 units. The thing most people miss: acylated ghrelin is not the same as des-acyl ghrelin. The octanoyl group at Ser3 is what makes it active at GHS-R1a. Your certificate of analysis must specify which form you have. Temperature sensitivity is extreme; keep this frozen at -20C until reconstitution. After mixing, use within 2 weeks refrigerated. If you want GHS-R1a receptor effects with practical pharmacokinetics, GHRP-2 (100 mcg SC, 2 to 3 times daily), GHRP-6 (100 to 200 mcg SC before meals), or MK-677 (25 mg oral daily) are the community-tested alternatives. Dose on an empty stomach; food blunts the GH response.
Dosing based on Research doses extrapolated from IV infusion studies; no established SC dosing protocol — 11 published references.View all sources →
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Disclaimer: This curve is a simplified first-order exponential decay model. Actual pharmacokinetics vary based on injection site, individual metabolism, body composition, and other factors. Half-life values are approximate and based on available preclinical and clinical literature. Many research peptides lack formal human pharmacokinetic studies. This is for educational purposes only — not medical advice.
Ghrelin is the body's only circulating appetite-stimulating hormone, backed by 10,000+ published studies. Clinical cachexia trials confirm appetite restoration and lean mass preservation. The native form degrades in minutes; synthetic GHS-R1a agonists like GHRP-2 and MK-677 deliver the same receptor activation with stable pharmacokinetics.
