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What is Hexarelin?
Hexarelin is a synthetic hexapeptide and one of the most potent growth-hormone-releasing peptides studied in research, with reported activity beyond GH release including cardiovascular-tissue signaling.
How Hexarelin works (research mechanism)
Hexarelin strongly activates the GH-secretagogue receptor. Research notes desensitization with continuous exposure and increases in prolactin and cortisol, so cycled study designs are common.
Primary research applications
Potent GH-release research
Studied where maximal GH-pulse stimulation is the variable.
Cardiac-tissue research
Examined for reported GH-independent cardiovascular signaling.
Cycled GHRP designs
Used in research that models receptor desensitization.
Research dosing reference
Research references commonly cite 100-200 mcg two to three times daily across 4-8 week cycles. Reference values only.
Reconstitution & handling
Hexarelin ships as a lyophilized (freeze-dried) powder and must be reconstituted before use in any liquid research model. Allow the vial to reach room temperature, swab the stopper, then add bacteriostatic water slowly down the inside wall of the vial - never spray it directly onto the powder. Swirl gently until dissolved; do not shake, as shaking foams the solution and stresses the peptide. The volume of water you add sets the concentration: a 5 mg vial reconstituted with 2 mL yields 2,500 mcg/mL, so 0.1 mL measures 250 mcg. A correctly reconstituted Hexarelin solution is clear; discard if it is cloudy or shows particulate.
Storage & stability
Store un-reconstituted Hexarelin vials refrigerated and protected from light for long-term stability; the lyophilized form is robust and tolerates shipping. After reconstitution, refrigerate at 2-8C, keep away from light, and use within the typical research window of roughly two to four weeks. The benzyl alcohol in bacteriostatic water helps inhibit microbial growth across that period. Always label reconstituted vials with the concentration and date.
Common research pairings
Hexarelin is studied in cycled designs and monitored for prolactin/cortisol; it is rarely combined continuously with other GHRPs.
How Hexarelin compares
Hexarelin is the most potent GHRP studied here but with the most off-target signaling and desensitization, contrasting with the gentler Ipamorelin.
Safety & research considerations
Hexarelin is a research chemical not approved for human use. For laboratory research only.
Sourcing, purity & Certificate of Analysis
Every lot of Hexarelin sold by Peptides Factory Direct is third-party tested to a 99%+ purity target, with identity confirmed by mass spectrometry and purity quantified by HPLC. A Certificate of Analysis (COA) documenting these results is available on request and ties each vial to a tracked lot. Material ships nationwide to all 50 US states with cold-chain handling where appropriate and fast domestic dispatch. This documentation is what separates research-grade Hexarelin from unverified material - quality is established before the vial ever reaches your lab.
How to order Hexarelin for research
Hexarelin can be ordered through the Peptides Factory Direct research portal as a one-time purchase or on a recurring research schedule (every 2 weeks, monthly, every 2 months, or every 3 months). Checkout requires confirming you are 21 or older, purchasing for laboratory research only, and that the product is not for human or animal consumption. Bulk and standing-order pricing is available - note it in your order. Open the order portal to view current research sizes and pricing.
Frequently asked questions
Why cycle Hexarelin in research?
Because the literature reports receptor desensitization and prolactin/cortisol increases with continuous exposure. Research use only. Every lot of Hexarelin is third-party tested to a 99%+ purity target, with identity confirmed by mass spectrometry and purity quantified by HPLC. A Certificate of Analysis tied to the tracked lot is available on request.
What sizes are available?
2 mg and 5 mg vials, third-party tested, COA on request. Hexarelin is supplied as a lyophilized (freeze-dried) powder in 2 mg and 5 mg research sizes. Un-reconstituted Hexarelin vials are stored refrigerated and protected from light; the lyophilized form is robust and tolerates shipping.
Is Hexarelin FDA approved?
No, it is a research chemical, not for human consumption. Hexarelin is sold strictly for laboratory and in-vitro research use only; the research-grade material is not an FDA-approved drug product, not a supplement or food, and not for human or animal consumption.
How should Hexarelin be stored?
Store un-reconstituted Hexarelin vials refrigerated and protected from light; the lyophilized powder is stable enough to tolerate shipping. Once reconstituted, keep the solution at 2-8C away from light, label it with concentration and date, and use it within roughly two to four weeks of research handling.
How is Hexarelin purity verified?
Hexarelin purity is verified by an independent third-party laboratory, not an in-house claim. Purity is quantified by HPLC against a 99%+ target and identity is confirmed by mass spectrometry, and the resulting Certificate of Analysis is tied to the tracked lot you receive and is available on request.
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External references: Peptides (Wikipedia) · U.S. Food and Drug Administration