PepsTracker › Vendors › Fusion Peptide vs Reta One Labs
Updated August 2026 · 12 shared compounds · discount codes applied
Reta One Labs is cheaper on 11 of the 12 shared peptides, Fusion Peptide on 1 — that is 92% of the 12 compounds where the two actually differ.
Averaged across every shared compound, Reta One Labs runs about 58% lower on cost per milligram. Both figures already include each vendor's discount code.
pepstracker (15% off)pepstracker (5% off)Every price below is the discounted price divided by milligrams, so vial sizes do not distort the comparison. Sorted by cheapest available option.
| Peptide | Fusion Peptide | Reta One Labs | Cheaper |
|---|---|---|---|
| NAD+ | $0.137/mg $136.84 / 1000mg | $0.112/mg $56.05 / 500mg | Reta One Labs 18% cheaper |
| GHK-Cu | $0.599/mg $68.84 / 115mg | $0.465/mg $46.55 / 100mg | Reta One Labs 22% cheaper |
| MOTS-c | $3.55/mg $158.09 / 44.5mg | $1.71/mg $68.40 / 40mg | Reta One Labs 52% cheaper |
| Semaglutide | $10.79/mg $323.84 / 30mg | $1.85/mg $37.05 / 20mg | Reta One Labs 83% cheaper |
| Tirzepatide | $3.52/mg $228.64 / 65mg | $2.28/mg $22.80 / 10mg | Reta One Labs 35% cheaper |
| PT-141 (Bremelanotide) | $2.90/mg $39.09 / 13.5mg | $2.47/mg $24.70 / 10mg | Reta One Labs 15% cheaper |
| Retatrutide | $5.38/mg $322.99 / 60mg | $2.75/mg $27.55 / 10mg | Reta One Labs 49% cheaper |
| SS-31 | $2.83/mg $161.49 / 57mg | $3.23/mg $32.30 / 10mg | Fusion Peptide 12% cheaper |
| BPC-157 + TB-500 Blend | $12.75/mg $127.49 / 10mg | $2.85/mg $57.00 / 20mg | Reta One Labs 78% cheaper |
| CJC/Ipa Blend | $13.77/mg $68.84 / 5mg | $3.51/mg $35.15 / 10mg | Reta One Labs 74% cheaper |
| BPC-157 | $5.86/mg $58.64 / 10mg | $3.70/mg $37.05 / 10mg | Reta One Labs 37% cheaper |
| Tesamorelin | $6.37/mg $63.74 / 10mg | $3.70/mg $37.05 / 10mg | Reta One Labs 42% cheaper |
Neither vendor wins across the board, which is the main takeaway. Fusion Peptide is cheaper on 1 of the 12 shared compounds and Reta One Labs on 11. If you buy a single compound, the table above is the answer. If you are placing one larger order to save on shipping, the vendor that wins your two or three highest-volume compounds usually nets out ahead.
Catalog breadth matters too: Fusion Peptide lists around 45 compounds we track versus 14 at Reta One Labs. Outside the 12 overlap, only one of them will stock what you need.
Fusion Peptide — code pepstracker for 15% off. Reta One Labs — code pepstracker for 5% off. Codes are applied before ranking on this page, which is why the order can differ from list prices. Always confirm the code at checkout.
Reta One Labs is cheaper on 11 of the 12 peptides both vendors stock, Fusion Peptide on 1. Across the compounds where they differ, that is 92% in Reta One Labs's favour. On average cost-per-milligram, Reta One Labs comes out roughly 58% lower. Neither wins everything, so check the specific compound you need.
Fusion Peptide uses code pepstracker for 15% off, and Reta One Labs uses pepstracker for 5% off. Every price in the comparison table already has these codes applied, which is why the ranking can differ from list prices.
They overlap on 12 compounds. Fusion Peptide lists roughly 45 tracked compounds and Reta One Labs lists about 14. If you need something outside the overlap, only one of them will have it.
Vial sizes differ between vendors, so sticker price is misleading. A larger vial at a higher price is often cheaper per milligram. Every figure here is the discounted price divided by milligrams, which is the only like-for-like comparison.
Open the live tracker to compare these two against all 27 vendors in real time, or browse every vendor we track.
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