OP Peptides
Updated Sep 28, 2026
01At a glance
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
Accessible
Two other stores have similar names
optpeptides.com and peptidesoptimized.com are different businesses, not copies of this one.
02Testing
No lab named.
The store does not say.
The store does not say.
03Prices
Prices run 16% below the median.
25 comparable compound and size pairs
Aug 26, 2026Oct 31, 2026
23% below market on Aug 26, 2026, 16% below on Oct 31, 2026.
Carries 19 of our compounds (34 listings)
94% of listings in stock; prices checked 28 Sep 2026
| Compound | Lead size | Store $/mg | Market median $/mg | Difference |
|---|---|---|---|---|
| Retatrutide | 10 mg | $7.90 | $7.95 | -1% |
| Tirzepatide | 10 mg | Not comparable | $7.00 | Not comparable |
| BPC-157 | 10 mg | $3.60 | $5.50 | -35% |
| Cagrilintide | 10 mg | $9.90 | $10.00 | -1% |
| GHK-Cu | 50 mg | Not comparable | $0.80 | Not comparable |
| MOTS-c | 10 mg | $4.00 | $5.00 | -20% |
| Adamax 1032 | 10 mg | $7.90 | $7.40 | 7% |
| CJC-1295 (no DAC) + GHRP-2 blend | 10 mg | $5.00 | $7.50 | -33% |
| DSIP (Delta Sleep-Inducing Peptide) | 5 mg | $6.00 | $7.00 | -14% |
| Epitalon | 10 mg | Not comparable | $4.00 | Not comparable |
| Glutathione | 1500 mg | Not comparable | $0.05 | Not comparable |
| KLOW blend | 80 mg | $1.12 | $1.50 | -25% |
| NAD+ | 500 mg | $0.08 | $0.14 | -43% |
| PT-141 (Bremelanotide) | 10 mg | $3.50 | $4.30 | -19% |
| Selank | 10 mg | $3.90 | $4.50 | -13% |
| Semaglutide | 10 mg | $5.00 | $6.90 | -28% |
| Semax | 10 mg | $3.90 | $4.50 | -13% |
| Sermorelin | 10 mg | $6.00 | $6.90 | -13% |
| TB-500 / Thymosin Beta-4 | 10 mg | Not comparable | $6.40 | Not comparable |
| Vitamin B12 | 10 mg | Not comparable | $5.50 | Not comparable |
04Vendor Watch
Site answered Nov 1, 2026
05Company and payment
How you can pay
Accepts credit cards: Not stated before checkout
Not listed on the public pages
Who's behind it
None listed; contact form only
Wix-built site; says it ships from the US. optpeptides.com and peptidesoptimized.com are different stores
06Dates
- Prices last read
- Sep 28, 2026
- Profile last reviewed
- Oct 19, 2026
- Slice generated
- Nov 2, 2026