Compound Library
13 compounds. Research-backed information. Honest assessments.
Tirzepatide
Mounjaro / Zepbound — weekly injection
Dual GIP+GLP-1 receptor agonist. The most effective weight loss medication currently available, showing 15–22% average body weight reduction in clinical trials. FDA approved for type 2 diabetes (Mounjaro) and obesity (Zepbound).
Semaglutide
Ozempic / Wegovy — weekly injection
GLP-1 receptor agonist. FDA approved for type 2 diabetes (Ozempic) and chronic weight management (Wegovy). Suppresses appetite, slows gastric emptying, and promotes sustained fat loss with a strong cardiovascular safety profile.
Retatrutide
Next-generation triple agonist
Triple GLP-1/GIP/glucagon receptor agonist. Phase 3 clinical trials show 24%+ body weight reduction — exceeding both semaglutide and tirzepatide in head-to-head comparisons. Currently available through select compounding pharmacies pending full FDA approval.
CJC-1295 + Ipamorelin
Gold standard GH peptide stack
The most popular peptide combination for body composition, sleep quality, and anti-aging. CJC-1295 is a GHRH analog that extends GH pulse duration. Ipamorelin is a selective GH secretagogue. Together they stimulate natural GH release through complementary mechanisms. Note: Human clinical evidence for direct muscle growth is limited — primary documented benefits are fat loss support, sleep improvement, and recovery.
Sermorelin
Gentle, physiologic GH stimulator
GHRH analog with a shorter half-life than CJC-1295, producing a more physiologic pulsatile GH pattern. Preferred by those seeking the most natural GH stimulation. Well established in clinical use for GH deficiency diagnosis.
Tesamorelin
FDA-approved — proven visceral fat reduction
The only FDA-approved GHRH analog, originally developed for HIV-associated lipodystrophy. The strongest evidentiary base of any GH peptide — backed by double-blind, placebo-controlled clinical trials. Most potent peptide specifically for reducing visceral abdominal fat with proven, measurable results.
BPC-157
Nature's healing peptide
Body Protective Compound — a 15 amino acid peptide. One of the most researched healing peptides, with extensive animal study data and growing human case series. Accelerates tendon, ligament, muscle, and gut repair through angiogenesis stimulation and collagen synthesis.
TB-500
Systemic healing and recovery
Thymosin Beta-4 synthetic fragment. Works systemically throughout the body to promote cellular repair, reduce inflammation, and improve vascular supply to injured tissues. Best stacked with BPC-157 for comprehensive injury recovery.
GHK-Cu
Copper peptide for collagen and skin
Naturally occurring copper peptide that supports collagen synthesis, antioxidant activity, and tissue repair. Often found pre-blended with BPC-157 and TB-500 in healing formulations. Excellent anti-aging add-on to any healing protocol.
PT-141
The libido peptide
Bremelanotide. Acts on melanocortin receptors in the brain to increase sexual desire and arousal in both men and women. Works centrally on the brain rather than through blood flow mechanisms — a fundamentally different approach from other treatments.
Epithalon
Telomere extending peptide
Tetrapeptide that stimulates telomerase production, potentially slowing cellular aging at the chromosomal level. Also normalizes melatonin production and improves sleep quality in older adults. Used in longevity protocols as an intensive short course.
DSIP
Delta sleep-inducing peptide
Naturally occurring nonapeptide that promotes slow-wave (deep) sleep, stress reduction, and recovery optimization. Stack with CJC-1295+Ipamorelin at bedtime for a powerful sleep and recovery protocol.
AOD-9604
HGH fragment for targeted fat burning
A fragment of human growth hormone (amino acids 176–191) that retains the fat-burning properties of HGH without blood sugar or IGF-1 effects. Specifically stimulates lipolysis in adipose tissue — best taken fasted for maximum effect.
All content is for informational purposes only. Peptides are research compounds. Consult a licensed healthcare provider before starting any protocol.
STACK may earn a commission when you purchase through our links at no extra cost to you. This never influences our recommendations — we only feature vendors with verified third-party testing and established quality standards.