Growth Hormone Peptides

CJC-1295 plus Ipamorelin is the most popular pre-mixed GH secretagogue stack, valued for clean growth hormone release without cortisol or appetite spikes. Sleep improvements appear within two weeks. Body composition shifts follow by month two. No RCT exists for the combo, but individual-component data and thousands of community reports align closely.

MK-677 (Ibutamoren) is an oral growth hormone secretagogue backed by a 2-year RCT in healthy elderly adults. It raises IGF-1 40 to 60 percent without suppressing your natural GH axis. Appetite stimulation and insulin resistance are the main limitations. Research compound, not FDA approved.

Ipamorelin is the most selective growth hormone releasing peptide available, producing a clean GH pulse without spiking cortisol, prolactin, or appetite. Community evidence across hundreds of threads is strong. No human efficacy trial has passed yet. Most users cycle 8 to 12 weeks.

CJC-1295 (No DAC) triggers natural GH pulses with a 30-minute half-life. Paired with Ipamorelin in most protocols, it's the community's preferred GHRH analog for sleep, recovery, and body composition. No clinical trials of any kind exist for this specific form.

HGH (Somatropin) is FDA-approved recombinant growth hormone with clinical trial data spanning 15,809 patients. Rudman's foundational study showed 8.8% lean mass gain and 14.4% fat loss in six months. Pharma-grade pricing remains steep, but anti-aging protocols at 1 to 2 IU daily are the community standard for sleep, skin, and body composition.

GHRP-6 produces one of the strongest growth hormone pulses in the secretagogue class and simultaneously drives intense appetite through ghrelin receptor agonism. Bulk-phase users pair it with GHRH peptides for complementary GH release, though the hunger can be difficult to manage outside of mass-gaining protocols.

Sermorelin is the original GHRH analog with the longest clinical track record of any GH peptide. FDA-approved then voluntarily discontinued for non-safety reasons. Decades of data, conservative dosing, and a predictable side-effect profile make it the default beginner choice for GH optimization.

Tesamorelin is the only FDA-approved GHRH analog for visceral fat reduction, backed by Phase 3 data in 816 patients. Originally indicated for HIV lipodystrophy, it's now widely used off-label for belly fat and GH optimization. Antibody formation after extended use is the main drawback.

GHRP-2 produces the strongest GH pulse of the commonly used secretagogues, but receptor desensitization kicks in within five days. Approved in Japan only as a diagnostic tool. The community figured out 5-on/2-off cycling before the clinical data confirmed why it works. Best paired with CJC-1295 (no DAC) on an empty stomach.

HGH 191AA is recombinant somatropin, the same 191-amino-acid growth hormone your pituitary makes. FDA-approved for growth hormone deficiency, it's used off-label for fat loss, recovery, and anti-aging at doses well above clinical guidelines. Quality varies wildly by source and manufacturer.

CJC-1295 DAC extends growth hormone signaling for days per injection, not hours. A Phase I trial (n=65) confirmed IGF-1 elevation lasting 9 to 11 days. Once-weekly dosing convenience comes with persistent water retention and a discontinued Phase II trial.

Hexarelin delivers the strongest GH pulse of any GHRP tested in humans, confirmed across dose-response trials (PMID 8126144). It also binds the CD36 cardiac receptor, a mechanism unique among secretagogues. Cortisol and prolactin elevation require strict 4-week cycling. Best suited for experienced users running short recomposition or recovery phases.

MGF (Mechano Growth Factor) is the muscle repair peptide your body produces after heavy training. Community users report faster recovery from localized post-workout injections, though the only rigorous human cell study found no proliferative effect. Its 5-7 minute half-life makes timing everything.

Follistatin-344 traps myostatin to remove the body's built-in cap on muscle growth. Animal data is dramatic (up to 327 percent gains), but the injectable form lasts only 90 minutes per dose. A documented vision risk and roughly 50 percent product mislabeling rate make this a higher-risk research peptide.

IGF-1 DES delivers roughly 10x the receptor potency of native IGF-1 by skipping binding protein attachment entirely. A 20-to-30-minute half-life makes post-workout intramuscular injection non-negotiable. Community results point to visible localized growth by week 3, but hypoglycemia management is the price of entry.

Gotratix is a Khavinson oral peptide bioregulator targeting muscle tissue, backed by one unindexed 37-person study. Taken as 200 mg capsules in 30-day courses, it's used for muscle recovery by the longevity community, though formal clinical evidence remains thin.

PEG-MGF extends the muscle repair signal MGF from a 5-minute half-life to an estimated 48 to 72 hours. Community users report faster recovery and reduced soreness within weeks. All published research tested native MGF, not the PEGylated form. Research peptide only.

ACE-031 traps myostatin to promote lean mass gains. Phase 1 showed 3.3% muscle increase from one injection, but vascular safety signals halted clinical development. Community protocols use doses far below trial levels. Quality verification is difficult for this recombinant fusion protein. (Word count: 42)