# Rainbow Peptide

> Premium research peptides and SARMs for scientific investigation. HPLC-verified ≥98% purity, Certificate of Analysis on every order, ISO/IEC 17025 accredited third-party testing. USA-based supplier. All products For Research Use Only (RUO).

## Products — By Research System

- [SOMA Line: Recovery & Tissue Repair](https://rainbowpeptide.com/categories/soma): BPC-157, TB-500, BPC-157+TB-500 Blend — the most-researched peptides for tendon, muscle, and gut tissue repair
- [AURA Line: Anti-Aging & Longevity](https://rainbowpeptide.com/categories/aura): GHK-Cu, Epithalon, Sermorelin — telomerase activation and cellular rejuvenation compounds
- [AXON Line: Cognitive & Nootropic](https://rainbowpeptide.com/categories/axon): Semax, Selank, Dihexa — BDNF upregulation and anxiolytic neuropeptides
- [APEX Line: Performance & Metabolic](https://rainbowpeptide.com/categories/apex): Ipamorelin, CJC-1295, Retatrutide, AOD-9604 — growth hormone secretagogues and GLP-1 analogues
- [REGENERIS Line: Immune & Anti-Inflammatory](https://rainbowpeptide.com/categories/regeneris): KPV, Thymosin Alpha-1 — mucosal and systemic immune modulation
- [SARMs](https://rainbowpeptide.com/sarms): RAD-140, LGD-4033, MK-677, Ostarine, GW-501516, YK-11, S-23, SR-9009

## Research Guides (Peer-Reviewed Citations)

- [BPC-157 Research Guide](https://rainbowpeptide.com/research/bpc-157): Tissue repair, gut healing, tendon and ligament regeneration — 4 PubMed citations
- [GHK-Cu Research Guide](https://rainbowpeptide.com/research/ghk-cu): Wound healing, collagen synthesis, anti-aging copper peptide — 4 PubMed citations
- [TB-500 / Thymosin Beta-4](https://rainbowpeptide.com/research/tb-500): Angiogenesis, muscle regeneration, cardiac protection — 4 PubMed citations
- [Epithalon Research Guide](https://rainbowpeptide.com/research/epithalon): Telomerase activation, circadian rhythm, longevity — 4 PubMed citations
- [Selank Research Guide](https://rainbowpeptide.com/research/selank): Anxiolytic, cognitive enhancement, GABA modulation — 3 PubMed citations
- [Semax Research Guide](https://rainbowpeptide.com/research/semax): BDNF upregulation, stroke recovery, neuroprotection — 3 PubMed citations
- [Ipamorelin / CJC-1295](https://rainbowpeptide.com/research/ipamorelin-cjc-1295): Growth hormone secretagogue synergy, pulsatile GH release — 3 PubMed citations
- [Retatrutide Research Guide](https://rainbowpeptide.com/research/retatrutide): Triple agonist (GLP-1/GIP/glucagon), metabolic research — 3 PubMed citations

## Quality & Testing

- [Lab Testing & Certificates of Analysis](https://rainbowpeptide.com/lab-testing): HPLC-UV purity analysis + ESI-MS identity confirmation. ≥98% purity required before sale. ISO/IEC 17025 accredited external lab.
- [Our Promise](https://rainbowpeptide.com/our-promise): Quality guarantee, sourcing standards, return and reshipment policy

## Research Tools

- [Peptide Reconstitution & Dosage Calculator](https://rainbowpeptide.com/peptide-calculator): Free research tool — enter vial size (mg), bacteriostatic water volume (mL), and desired dose (mcg) to calculate concentration, injection volume, and insulin syringe units

## Educational Blog

- [What Are Research Peptides?](https://rainbowpeptide.com/blog/what-are-research-peptides): Beginner overview of peptide biology, classification, and research applications
- [BPC-157 Research Guide (Deep-Dive)](https://rainbowpeptide.com/blog/bpc-157-research-guide): Mechanisms, preclinical studies, protocol notes
- [GHK-Cu Anti-Aging Research](https://rainbowpeptide.com/blog/ghk-cu-anti-aging-research): Copper peptide biology, skin and systemic effects
- [Epithalon Anti-Aging Research](https://rainbowpeptide.com/blog/epithalon-anti-aging-research): Khavinson tetrapeptide, telomerase, and circadian biology
- [Selank Nootropic Research](https://rainbowpeptide.com/blog/selank-nootropic-research): Synthetic tuftsin analogue, anxiety, cognition
- [Semax Nootropic Research](https://rainbowpeptide.com/blog/semax-nootropic-research): ACTH(4-7) Pro-Gly-Pro analogue, BDNF, neuroregeneration
- [CJC-1295 / Ipamorelin Research](https://rainbowpeptide.com/blog/cjc-1295-ipamorelin-research): Growth hormone secretagogue stack
- [AOD-9604 Research](https://rainbowpeptide.com/blog/aod-9604-research-guide): HGH fragment 176-191, fat metabolism, no IGF-1 elevation

## Company

Rainbow Peptide is a USA-based research peptide supplier. All products are sold For Research Use Only (RUO) and are not intended for human consumption. Products are not intended to diagnose, treat, cure, or prevent any disease.

Contact: support@rainbowpeptide.com