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PEPTIDE
STACKING GUIDE

Popular research stack combinations with compound roles, mechanism rationale, and timing notes. Each stack is referenced against published pharmacology literature.

Research use only. All stacks documented here reference compound interactions in the context of in-vitro research and preclinical literature. Not for human or animal consumption. Purity Peptides does not provide dosing or medical advice.
GH Secretagogues
GH OPTIMIZATION STACK
GHRH + GHRP synergy for sustained GH pulse amplitude and frequency research
CJC-1295 (No DAC) Ipamorelin NAD+
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Compound Roles
CJC-1295 (No DAC)
GHRH analog. Binds GHRH receptors in the pituitary to stimulate GH synthesis and release. Without the DAC (Drug Affinity Complex), it has a shorter action window, allowing more physiological GH pulsatility in research protocols.
Ipamorelin
Selective GHRP. Stimulates GH release via ghrelin receptor (GHS-R1a) without significantly elevating cortisol, prolactin, or ACTH. The selectivity profile (Raun et al., 1998) makes it the standard GHRP reference compound for mechanistic GH research.
NAD+
Co-factor support. NAD+ declines with age and is required for sirtuin-mediated DNA repair and mitochondrial function. Included in longevity-focused GH research contexts to assess metabolic interaction effects.
Research Rationale
Synergistic mechanism: CJC-1295 and ipamorelin act on two separate receptor pathways (GHRH-R and GHS-R1a respectively) that converge on somatotrophs in the anterior pituitary. The combination produces greater GH release than either compound alone in preclinical models, reflecting the same principle as endogenous GHRH + ghrelin co-stimulation. This stack is the most studied GHRH/GHRP research combination in the literature.
Timing reference: GHRH + GHRP combinations are typically studied at fasting timepoints (>2hr post-feeding) to minimize somatostatin blunting of GH release. Most research protocols use 2-3x daily administration windows.
Shop CJC-1295 (No DAC) → Shop Ipamorelin → Shop NAD+ →
Body Composition
METABOLIC RESEARCH STACK
GLP receptor agonism combined with lipolytic and metabolic co-factors
Retatrutide MOTS-C AOD-9604
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Compound Roles
Retatrutide
GLP-1/GIP/glucagon triple agonist (LY3437943). Simultaneously targets three receptor pathways involved in energy intake, gastric emptying, and glucagon-driven lipolysis. Phase 2 trial data (Jastreboff et al., 2023) showed up to 24.2% body weight reduction at 48 weeks.
MOTS-C
Mitochondrial-derived peptide. Improves insulin sensitivity and activates AMPK pathway, enhancing metabolic substrate utilization. In animal models, MOTS-C prevented diet-induced obesity via mitochondrial biogenesis effects (Lee et al., 2015).
AOD-9604
hGH fragment 176-191. Stimulates lipolysis in adipocytes without insulin or IGF-1 pathway involvement. Studied as a specific fat-metabolism modulator that does not carry the growth-promoting effects of full-length GH.
Research Rationale
Multi-pathway approach: These three compounds address metabolic research from different angles: receptor-level appetite and glucose signaling (retatrutide), mitochondrial metabolic efficiency (MOTS-C), and direct adipocyte lipolysis (AOD-9604). The combination is used in research contexts investigating whether targeting multiple metabolic nodes simultaneously produces additive or synergistic effects on substrate oxidation and fat mass.
Note: Retatrutide has a long half-life (~6 days based on phase 2 pharmacokinetics), making it suitable for once-weekly research protocols. AOD-9604 and MOTS-C have shorter half-lives and are typically studied in daily or twice-daily protocols.
Shop Retatrutide → Shop MOTS-C → Shop AOD-9604 →
Tissue Research
TISSUE REPAIR STACK
Angiogenesis, connective tissue repair, and inflammation modulation research
BPC-157 TB-500 GHK-Cu
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Compound Roles
BPC-157
Stable gastric pentadecapeptide. Promotes angiogenesis via VEGF upregulation, accelerates tendon-to-bone healing in animal models, and modulates gut-brain axis signaling. Most extensively studied in gut barrier research and musculoskeletal repair models (Sikiric et al., 2018).
TB-500 (Thymosin Beta-4)
Actin-sequestering peptide that promotes cell migration, differentiation, and new blood vessel formation. Studied in cardiac repair, wound healing, and neurological injury models. Complements BPC-157 by acting on different repair pathways (cytoskeletal vs. growth factor).
GHK-Cu
Copper tripeptide that stimulates collagen, glycosaminoglycan, and decorin synthesis. Promotes wound healing and skin matrix remodeling. Research in the Pickart lab demonstrated regulation of over 4,000 human genes including those controlling collagen turnover and anti-inflammatory pathways.
Research Rationale
Complementary repair mechanisms: BPC-157 and TB-500 are commonly combined in musculoskeletal and soft tissue repair research (sometimes sold pre-blended as "Wolverine Blend"). They operate on distinct but complementary pathways: BPC-157 focuses on vascularization and growth factor signaling; TB-500 targets actin dynamics and cell migration. GHK-Cu adds an extracellular matrix remodeling dimension via its collagen-stimulating effects, making it relevant in connective tissue and skin repair research contexts.
Note: Purity Peptides carries a pre-blended Wolverine Blend (BPC-157 + TB-500) at 10mg and 20mg for research convenience, as well as individual compounds and the GLOW Blend (GHK-Cu + BPC-157 + TB-500) and KLOW Blend (+ KPV).
Shop BPC-157 → Shop TB-500 → Shop GHK-Cu → Shop Wolverine Blend →
Skin & Anti-Aging
SKIN RESEARCH STACK
Collagen synthesis, melanogenesis modulation, and cellular anti-aging research
GHK-Cu Epithalon Melanotan II Retatrutide
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Compound Roles
GHK-Cu
Primary collagen and matrix remodeling compound. Increases collagen synthesis and density, reduces fine lines via matrix metalloproteinase regulation, and acts as a potent antioxidant. Well-studied in both in-vitro and human topical research.
Epithalon
Tetrapeptide from the pineal gland region. Research focus: telomerase activation and telomere elongation in human cells (Khavinson et al., 2003). Studied in cellular aging models as a potential longevity signal.
Melanotan II
Non-selective melanocortin receptor agonist. Activates MC1R on melanocytes to stimulate melanogenesis (eumelanin production), increasing skin pigmentation without UV radiation. Also studied for MC3R/MC4R receptor pharmacology research.
Retatrutide
Added in research contexts investigating the relationship between adiposity reduction and skin quality. Visceral fat reduction, improved insulin sensitivity, and reduced inflammatory markers are studied as secondary skin health variables.
Research Rationale
Multi-layer skin biology: This combination addresses skin research at the collagen matrix level (GHK-Cu), the cellular aging and telomere biology level (Epithalon), the melanogenesis and UV response level (Melanotan II), and the systemic metabolic/inflammatory level (Retatrutide). Each compound operates independently on its target system, making interaction effects a key research question.
Note: Purity Peptides offers the GLOW Blend (GHK-Cu 50mg + BPC-157 10mg + TB-500 10mg per vial) and KLOW Blend (adds KPV) as pre-formulated research blends targeting skin and repair pathways simultaneously.
Shop GHK-Cu → Shop Epithalon → Shop Melanotan II → Shop GLOW Blend →
Brain & Focus
NEUROPEPTIDE RESEARCH STACK
BDNF upregulation, anxiolytic signaling, and NAD-dependent neuroprotection research
Semax Selank NAD+
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Compound Roles
Semax
ACTH(4-7)PGP heptapeptide. Upregulates BDNF and NGF expression in preclinical models (Dolotov et al., 2006). Studied for neuroprotective properties after ischemic events in Russian clinical research. Not FDA-approved; for research only.
Selank
Tuftsin-derived hexapeptide with anxiolytic properties. Modulates GABA-A and serotonin receptor activity. Studied for cognitive enhancement and anxiety reduction in animal models without the sedative profile of benzodiazepines (Zozulya et al., 2001).
NAD+
Neuronal NAD+ supports SIRT1/SIRT3 activity required for mitochondrial health, DNA repair, and axonal protection. NAD+ depletion has been linked to neurodegeneration in preclinical models; restoration studies are an active research area.
Research Rationale
Complementary CNS targets: Semax and Selank are often paired in Russian-origin nootropic research as they target different aspects of cognitive function: Semax for neurotrophin upregulation and neuroprotection; Selank for GABAergic and serotonergic anxiety modulation. NAD+ is added as a metabolic support compound given neuronal dependence on NAD+ for energy production and epigenetic regulation. The combination is studied to investigate whether neurotrophin, anxiolytic, and metabolic interventions produce additive cognitive effects in preclinical models.
Note: Semax and Selank are available in 5mg and 10mg vials. Both are intranasal peptides in clinical research contexts, though all Purity Peptides compounds are supplied as lyophilized powder for research reconstitution only.
Shop Semax → Shop Selank → Shop NAD+ →
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