Key Takeaways
- #4 ranked vendor in our scoring system (price 40%, COA 30%, reputation 30%)
- 25+ peptides in stock including semaglutide, retatrutide, tirzepatide, and specialty compounds
- 10% off with code at checkout
- Third-party COA testing with HPLC and mass spectrometry verification
- 4/5 Trustpilot rating across 84+ reviews
- Finnrick B-C rating based on 24 independent lab tests across 3 products
- Not perfect — crypto-preferred payment, newer brand (founded 2023), lower Trustpilot score than top competitors
Royal Peptides has been a steady presence in our vendor rankings since we started tracking them. They don't have the flashiest discount or the longest track record, but they carry a broad catalog with COA documentation and ship reliably from US fulfillment centers. With the new 10% exclusive discount code, they're worth a closer look. Here's the full breakdown.
Who Is Royal Peptides?
Royal Peptides is a US-based research peptide supplier founded in 2023. They operate fulfillment centers in Texas, Florida, and Indiana, with additional global inventory hubs in Toronto, Dubai, and Africa. Their website runs on WooCommerce at royal-peptides.com.
Their positioning: cGMP-sourced API materials, third-party COA verification on every product, and a catalog that covers both mainstream compounds (semaglutide, retatrutide, BPC-157) and specialty items that smaller vendors skip (IGF-1 LR3, VIP, Kisspeptin, FOXO4-DRI). They also operate a wholesale division for bulk orders with a 100-vial minimum.
With roughly two years of continuous operation and 84+ Trustpilot reviews at a 4/5 rating, Royal Peptides has moved past the startup phase but is still building the deep track record that researchers look for. Their Finnrick Analytics rating of B-C across 24 independent lab tests is decent but not top-tier — semaglutide scored a B (7 samples), while retatrutide and tirzepatide both scored C.
Product Catalog
Royal Peptides carries 25+ peptides across the major research categories:
Weight management: semaglutide, retatrutide, tirzepatide, cagrilintide Healing & recovery: BPC-157, TB-500 Growth hormone: Tesamorelin, IGF-1 LR3 Immune & longevity: Thymosin Alpha-1, MOTS-C, Epitalon, FOXO4-DRI, DSIP Cognitive: Selank, Semax Metabolic: 5-Amino-1MQ, AOD-9604, NAD+ Skin & tissue: GHK-Cu Tanning & sexual health: Melanotan II, PT-141 Specialty: KPV, SS-31, Kisspeptin, VIP
What stands out: Royal Peptides carries all three major GLP-1 compounds (semaglutide, retatrutide, tirzepatide) plus cagrilintide. They also stock specialty items like IGF-1 LR3, VIP, Kisspeptin, and FOXO4-DRI that many competitors skip entirely. The catalog breadth is competitive with EZ Peptides.
Notable absences: No pre-mixed blends like Ion Peptide offers. No Ipamorelin, CJC-1295, or Sermorelin listed at time of review — a gap in the growth hormone secretagogue category that EZ Peptides and Ascension fill.
COA & Quality Testing
Royal Peptides maintains a dedicated COA page on their website where customers can review third-party testing documentation. Their testing program includes HPLC (High-Performance Liquid Chromatography) for purity verification and mass spectrometry for identity confirmation.
They state that all products are sourced from cGMP-compliant manufacturing with sterile vialing and controlled lyophilization. Batch-level COA verification is part of their quality process.
Independent verification (Finnrick Analytics):
Finnrick Analytics — the most rigorous independent testing service in the peptide space — rates Royal Peptides B-C based on 24 lab tests across 3 compounds:
- Semaglutide: B rating (7 samples tested, scores averaging above 6)
- Retatrutide: C rating (scores averaging above 5)
- Tirzepatide: C rating (scores averaging above 5)
This puts Royal Peptides in the middle of the pack on independent testing. For comparison, EZ Peptides and Penguin Peptides generally score higher on Finnrick. The B-C range means products are functional but not consistently top-tier on purity and quantity metrics.
How it compares:
- EZ Peptides uses QR codes on every product linking to per-product COAs — the most convenient verification system
- Penguin Peptides offers batch-specific COAs — the most granular documentation available
- Ascension Peptides provides independent third-party COAs with HPLC and mass spec data
- Royal Peptides provides third-party COAs with HPLC and mass spec via their COA page — solid documentation, but Finnrick scores suggest room for improvement on consistency
Pricing
Royal Peptides' pricing sits in the mid-range for the market. The 10% discount with code brings prices down, though it doesn't match Ascension's 50% or Ion/Limitless's 15%.
| Peptide | Royal Base | After 10% Off | EZ Peptides | EZ After 10% Off | Ascension After 50% Off | Vial Size |
|---|---|---|---|---|---|---|
| BPC-157 | $60.00 | $54.00 | $40.00 | $36.00 | $25.00 | 10mg |
| TB-500 | $70.00 | $63.00 | $45.00 | $40.50 | $21.50 | 10mg |
| Semaglutide | $45.00 | $40.50 | $34.99 | $31.49 | N/A | 5mg |
| Retatrutide | $55.00 | $49.50 | $80.00 | $72.00 | $40.00 | 10mg |
| Tirzepatide | $50.00 | $45.00 | $55.00 | $49.50 | $35.00 | 5mg |
| GHK-Cu | $55.00 | $49.50 | $45.00 | $40.50 | N/A | 50mg |
Prices from seed database at time of publication. Vial sizes vary — always compare price per mg, not per vial.
The pricing reality: Royal Peptides is not the cheapest on most compounds. Ascension's 50% discount dominates on shared catalog items, and EZ Peptides often has lower base prices. Where Royal competes on price is GLP-1 compounds — retatrutide at $49.50 after discount is significantly cheaper than EZ at $72.00. Tirzepatide at $45.00 also beats EZ's $49.50. If GLP-1 research is your focus and Ascension doesn't carry what you need, Royal Peptides is worth the price check.
For live pricing across all vendors: Royal Peptides deals page
