SOMA BPC-157 Capsules (500mcg)
BPC-157 (Body Protection Compound) in oral capsule format, 500mcg per capsule. Studied for GI integrity, tissue signaling, and systemic repair pathways. COA included.
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Research-grade peptides, SARMs, and oral capsules — all HPLC-verified at >98% purity. Certificate of Analysis on every order. BPC-157, GHK-Cu, RAD-140, Retatrutide, Semax and more. Ships to USA, Australia, Canada, UK and globally.
✓ HPLC Verified >98% ✓ COA Every Order ✓ Ships Globally ✓ Cold-Packed
COA on Every Order Third-party certified — HPLC + MS verified
HPLC Verified Purity All compounds >98% — independently tested
Fast Discreet Shipping Ships 2–3 business days, cold-packed
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Peptides · SARMs · Oral Capsules · HPLC Verified
Targeted by System.
Verified by Science.
Every compound is mapped to a specific biological pathway — so your research has a clear target, a verified source, and a documented chain of custody from synthesis to your lab.
SOMA Recovery & Repair
Recovery & Tissue Repair
The most widely researched peptide line. Musculoskeletal repair, gastrointestinal tissue models, and wound healing biology.
BPC-157 TB-500 BPC+TB Blend AOD-9604
AXON Cognitive & Neuro
Cognitive & Nootropic
Russian neuropeptides and nootropic compounds for neuroplasticity, anxiety-reduction, and cognitive function research models.
Selank Semax Dihexa DSIP
AURA Anti-Aging & Longevity
Anti-Aging & Longevity
Collagen synthesis, telomere biology, and cellular ageing research. GHK-Cu, Epithalon, and the fastest-growing compounds in the peptide space.
GHK-Cu Epithalon MOTS-C NAD+
REGENERIS Immune & Inflammation
Immune & Anti-Inflammatory
Immunomodulatory peptides for cytokine research, inflammation pathway modelling, and adaptive immune response studies.
KPV Thymosin Alpha-1 ARA-290 AICAR
APEX Performance & Metabolic
Performance & Metabolic
GH secretagogue axis, metabolic regulation, and body composition research. Includes emerging agents like Retatrutide and Fragment 176-191.
CJC-1295 Ipamorelin Retatrutide Fragment 176-191
SARMs Androgen Receptor Research
Selective Androgen Receptor Modulators
Non-steroidal AR agonists for muscle, bone, and metabolic research. Tissue-selective binding profiles for targeted androgenic pathway studies.
RAD-140 LGD-4033 Ostarine MK-677
⭐ Most Popular
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Injectable peptide vials and oral peptide capsules — all third-party HPLC-verified. For Research Use Only.
- SOMA
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SOMA BPC-157 + TB-500 Blend
A pre-formulated research blend combining BPC-157 and TB-500 (Thymosin Beta-4 fragment) in equal concentrations. Frequently co-investigated in preclinical repair and regeneration models for potential synergistic tissue-healing properties.
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SOMA GHK-Cu Capsules (50mg)
GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper) in oral capsule format, 50mg per capsule. Studied for collagen synthesis, wound healing, and systemic tissue remodelling. COA included.
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SOMA Tirzepatide (10mg)
Tirzepatide GIP/GLP-1 dual agonist research peptide, 10mg lyophilised vial. FDA-approved Mounjaro/Zepbound mechanism. 22.5% weight loss in SURMOUNT-1 Phase III. COA included.
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SOMA Retatrutide Capsules (10mg)
Retatrutide GIP/GLP-1/glucagon triple agonist in oral capsule format, 10mg per capsule. Next-generation metabolic research peptide with 24.2% Phase II weight loss data. COA included.
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SOMA CJC-1295 + Ipamorelin Blend (10mg + 5mg)
CJC-1295 (No DAC) + Ipamorelin dual GH-axis research blend. 10mg CJC-1295 + 5mg Ipamorelin per vial. Synergistic GHRH/GHS-R1a combination for growth hormone secretagogue research. COA included.
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SOMA Semax Capsules (10mg)
Semax ACTH-derived nootropic neuropeptide in oral capsule format, 10mg per capsule. Studied for BDNF upregulation, cognitive enhancement, and stroke recovery models. COA included.
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SOMA RAD-140 Powder 1g
RAD-140 (Testolone) powder 1g — ≥98% HPLC purity, COA verified. Potent selective androgen receptor modulator used in muscle wasting and neuroprotection preclinical research. For research use only.
Research with Confidence
Every Rainbow Peptide compound is independently tested by a certified third-party laboratory using HPLC analysis before it reaches your lab. We publish a Certificate of Analysis (COA) for each batch — because your research data is only as good as your source material.
- ✓ HPLC purity testing — minimum >98% purity on all compounds
- ✓ Mass spectrometry identity confirmation — every batch is verified by molecular weight
- ✓ Lyophilization under controlled conditions — maintains bioactivity and shelf life
- ✓ Sterile bacteriostatic water available for reconstitution
What Researchers Are Saying
Verified orders. Independent lab results. Honest feedback.
4.8 (247 reviews)
Exactly what a COA should look like
Third supplier I've tried for BPC-157 research. First one to actually include a legible, dated COA with lot number traceable on the site. Purity at 99.1% confirmed. Will be ordering the TB-500 next.
Consistent batch quality across 3 orders
Running a 6-month collagen synthesis study. Ordered three separate batches — all came in above 98.5% on my in-house HPLC verification. Packaging is solid, cold packs still active on arrival.
Fastest shipping I've encountered
Ordered Thursday afternoon, arrived Saturday. Discreet packaging, no external branding. COA included. Syringe kit arrived intact. The pricing is fair for the quality level.
High quality — minor shipping delay
Product quality is excellent, verified with third-party HPLC. Lost one star because my order sat in processing for 3 days — support was responsive and explained a supply chain issue. Will continue ordering.
Best sourcing option for AXON-line compounds
Very few suppliers carry Semax and fewer still verify it properly. Rainbow Peptide's COA showed identity confirmed by MS and HPLC at 98.4%. Exactly what research-grade should mean.
Bulk order handled professionally
Placed a Lab Pack inquiry for 20 vials across 3 compounds. Got a response within 24 hours with a quote and consolidated COA report. Clean process, competitive pricing at volume.
Every metric confirmed independently
I test everything I receive. CJC-1295 came in at 98.8% purity, correct MW confirmed by MS. Lyophilised cake looks clean, reconstitutes easily. This is now my primary supplier.
Good quality, website could be more detailed
Product quality is solid — verified COA, well-packaged, fast shipping. Would appreciate more technical data on the product pages (half-life, storage conditions). Support answered my questions quickly though.
Research Peptides & SARMs — Global Supply
Research peptides are short chains of amino acids synthesized in controlled laboratory conditions for in vitro and preclinical research use. SARMs (Selective Androgen Receptor Modulators) are a distinct class of research compounds — non-steroidal molecules that bind the androgen receptor with tissue selectivity, relevant to muscle wasting, bone density, and metabolic research.
At Rainbow Peptide, every compound meets a minimum of >98% purity as verified by HPLC analysis and independent third-party CoA. Our catalog spans five peptide research lines — SOMA (tissue repair), AXON (neuropeptides), AURA (longevity), REGENERIS (immunomodulation), and APEX (metabolic/GH axis) — plus a dedicated SARMs line with 9 compounds.
Popular research compounds include BPC-157 (gastrointestinal and musculoskeletal tissue models), GHK-Cu (collagen synthesis, skin biology, 74K monthly searches), RAD-140 (muscle wasting and neuroprotection, 49.5K/mo), MK-677 (GH/IGF-1 axis, 40.5K/mo), and Enclomiphene (HPTA axis research, 27.1K/mo).
We ship research chemicals globally — USA, Australia, Canada, United Kingdom, Germany, France, Spain, Italy, Brazil, Mexico, Argentina, and more. All international orders include third-party CoA and accurate customs documentation.
Frequently Asked Questions: Buying Peptides & SARMs Online
Where can I buy peptides online?
Rainbow Peptide is a research peptide supplier offering 46 compounds including BPC-157, GHK-Cu, TB-500, CJC-1295, Ipamorelin, RAD-140, and more. All products are HPLC-verified to >98% purity with a Certificate of Analysis on every order. We ship to the USA, Australia, Canada, UK, Germany, France, Spain, Brazil, Mexico, and globally.
Can I buy research peptides in Australia?
Yes. Rainbow Peptide ships research peptides to Australia. Most research peptides including BPC-157, GHK-Cu, TB-500, CJC-1295, and Ipamorelin are not scheduled substances under the TGA SUSMP. They are supplied as research chemicals with For Research Use Only labelling and third-party CoA. Delivery to Australia is overnight and 2–3 day delivery available. See our Australia peptide research page for full information.
Where can I buy research peptides in Canada?
Rainbow Peptide ships research-grade peptides to Canada. Research peptides are not scheduled controlled substances under the CDSA and are supplied as research chemicals with third-party CoA and For Research Use Only labelling. Delivery to Canada is overnight and 2–3 day delivery available. See our Canada peptide research page.
Where can I buy research peptides in the UK?
Rainbow Peptide ships research peptides to the United Kingdom. Most research peptides are not scheduled under the Misuse of Drugs Act 1971 or Psychoactive Substances Act 2016 and can be supplied as research chemicals. All orders include third-party CoA and For Research Use Only labelling. Delivery to the UK is overnight and 2–3 day delivery available. See our UK peptide research page.
Can I buy SARMs online for research?
Yes. Rainbow Peptide offers 9 research-grade SARMs: RAD-140 (Testolone), LGD-4033 (Ligandrol), Ostarine (MK-2866), MK-677 (Ibutamoren), Andarine (S4), Cardarine (GW501516), SR9009 (Stenabolic), YK-11, and Enclomiphene. All are ≥98% HPLC purity with independent third-party CoA. See our SARMs catalog. For Research Use Only.
Are research peptides legal to buy online in the USA?
Research peptides are legal to purchase in the United States when sold explicitly "For Research Use Only" (RUO) and not represented as suitable for human consumption. They occupy a distinct regulatory category from pharmaceutical drugs. Buyers are responsible for verifying the legal status in their own jurisdiction.
What are the best peptides to buy for research?
The most widely researched peptides include: BPC-157 (tissue repair, GI — 165K/mo searches), GHK-Cu (skin biology, anti-aging — +1,000% YoY search growth), TB-500 (musculoskeletal repair), CJC-1295 + Ipamorelin (GH axis), and Selank / Semax (neuropeptides). In SARMs: RAD-140 (49.5K/mo), MK-677 (40.5K/mo), Enclomiphene (27.1K/mo).
How do I know if a peptide supplier has real purity?
Demand a batch-specific Certificate of Analysis (COA) from an independent third-party laboratory. The COA should show: product name, lot number, analytical method (HPLC-UV), purity percentage, identity confirmation by mass spectrometry, and test date. At Rainbow Peptide, every order includes a COA traceable to the exact batch shipped.
Does Rainbow Peptide ship internationally?
Yes. We ship to: USA, Australia, Canada, United Kingdom, Germany, France, Spain, Italy, Netherlands, Brazil, Mexico, Argentina, and most other countries. International shipments include third-party CoA and For Research Use Only documentation. Delivery is typically overnight and 2–3 day delivery with full tracking.
What is the difference between BPC-157 and TB-500?
BPC-157 (Body Protection Compound-157) is a 15-amino acid synthetic peptide primarily studied for gastrointestinal, tendon, and connective tissue research. TB-500 is a synthetic Thymosin Beta-4 fragment studied in musculoskeletal and cardiac tissue models. Both are in the SOMA research line — Rainbow Peptide offers a pre-blended BPC-157 + TB-500 vial for combined study protocols.
How should research peptides be stored?
Lyophilized (freeze-dried) peptides should be stored at −20°C, protected from light and moisture. Under these conditions, most peptides remain stable for 2+ years. Once reconstituted with bacteriostatic water, store at 4°C and use within 28–30 days. Never refreeze reconstituted peptides.
What is GHK-Cu and why is it gaining popularity?
GHK-Cu (Glycyl-L-Histidyl-L-Lysine copper) is a naturally occurring copper peptide first isolated in 1973. Research interest has exploded (+1,016% year-over-year search growth) due to peer-reviewed studies showing it modulates over 4,000 human genes, promotes collagen synthesis in fibroblast cell models, and reduces inflammatory markers. Available as a 50mg lyophilized vial in the AURA anti-aging research line.