Core Peptides vs Swiss Chems: Peptide Vendor Comparison 2026
Compare Core Peptides and Swiss Chems — mid vs mid pricing, COA-verified/COA-verified testing, 15 shared peptides.
Core Peptides
Location: USA
Peptides: 16
COA: ✓ Available
Third-party tested: ✓ Yes
Top peptides:
- • BPC-157
- • TB-500
- • CJC-1295
- • Ipamorelin
- • PT-141
Swiss Chems
Location: USA
Peptides: 17
COA: ✓ Available
Third-party tested: ✓ Yes
Top peptides:
- • BPC-157
- • TB-500
- • CJC-1295
- • Ipamorelin
- • PT-141
Comparison Overview
Both Core Peptides and Swiss Chems compete in the mid market segment. Core Peptides offers with COA availability and is third-party tested, while Swiss Chems is with COA availability and third-party tested. Both offer shipping to multiple regions; Core Peptides has a reputation score of 3.8/5 vs Swiss Chems's 4/5. They share 15 common peptide offerings, including BPC-157, TB-500.
Key Metrics
| Metric | Core Peptides | Swiss Chems |
|---|---|---|
| Established | 2020 | 2018 |
| Location | USA | USA |
| Price Tier | mid | mid |
| Reputation Score | 3.8/5 | 4/5 |
| COA Available | ✓ Yes | ✓ Yes |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Shipping Regions | USA | USA, International |
| Payment Methods | credit card, crypto | credit card, crypto, zelle |
| Peptides Offered | 16 | 17 |
Shared Peptides (15)
Both vendors offer these peptides:
Unique to Core Peptides
- Tesamorelin
Unique to Swiss Chems
- Semax
- MK-677
Core Peptides Highlights
Strengths
- cGMP facility manufacturing
- Peptide blends available
- Free shipping on orders over $200
Considerations
- Smaller catalog compared to top competitors
- Less community discussion and reviews available
Swiss Chems Highlights
Strengths
- Wide product range including SARMs, peptides, and nootropics
- Same-day shipping on orders before noon EST
- Independent test results published on site
Considerations
- Mixed reviews on Reddit - some quality inconsistency reports
- Website domain (.is) raises concerns for some buyers
Which Vendor to Choose?
Swiss Chems has been in business longer, offering more operational history.
⚠️ Important: This comparison is for informational purposes only. Research peptides responsibly and consult appropriate medical professionals. The Peptide Index does not endorse any vendor.
Learn More in the Peptide Playbook
Get comprehensive protocols, dosing information, and vendor selection guidance.
Get the Full Guide →