Amino USA vs Southern Aminos
Two top US peptide sources scored on the identical published formula: lab credibility, shipping, pricing, operating history, and transparency.
- Amino USA
- 7.78/10
Amino USA
- Southern Aminos
- 8.09/10
Southern Aminos
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Factor by factor
- 8.0Lab Credibilityweight 55%9.0
- 8.0Shipping & Refundweight 20%7.5
- 8.3Pricingweight 15%8.5
- 4.2Operating Historyweight 5%2.3
- 6.5Transparencyweight 5%5.0
- 19Certificates confirmed at the lab28
- 2Labs named on certificates2
Show as a table
| Category | Amino USA | Southern Aminos |
|---|---|---|
| Lab Credibility | 8.0 | 9.0 |
| Shipping & Refund | 8.0 | 7.5 |
| Pricing | 8.3 | 8.5 |
| Operating History | 4.2 | 2.3 |
| Transparency | 6.5 | 5.0 |
| Overall | 7.78 | 8.09 |
Products both carry, price for price
| Peptide | Amino USAper unit | Southern Aminosper unit |
|---|---|---|
| BPC-157Guide → | $5.67/mg | $3.84/mg |
| TB-500Guide → | $8.00/mg | $4.80/mg |
| GHK-CuGuide → | $0.50/mg | $0.40/mg |
| CJC-1295Guide → | $12.50/mg | $6.40/mg |
| IpamorelinGuide → | $5.00/mg | $4.80/mg |
| Semax | $2.50/mg | $3.52/mg |
| Selank | $5.00/mg | $3.52/mg |
| Melanotan-2 | $3.00/mg | $4.16/mg |
| Tesamorelin | $9.00/mg | $3.96/mg |
| PT-141 | $4.50/mg | $4.40/mg |
| AOD-9604 | $8.00/mg | $8.80/mg |
| 5-Amino-1MQ | $1.70/mg | $1.60/mg |
| IGF-1 LR3 | $70.00/mg | $60.00/mg |
| Cagrilintide | $10.20/mg | $11.92/mg |
How they compare: the verdict
Southern Aminos takes this matchup by a razor-thin margin, 8.09 to 7.78 on the published formula. Its biggest edge is lab credibility, where it scores 9.0 against Amino USA's 8.0.
It isn't a clean sweep. Amino USA actually edges ahead on operating history (4.2 vs 2.3), so if that factor matters most to you it's worth weighing.
On lab evidence, the heaviest-weighted factor, both Amino USA and Southern Aminos have independently verified third-party COAs, so the gap comes down to the other categories.
Across the 14 peptides both carry, Southern Aminos is cheaper per unit more often (Amino USA wins on 4, Southern Aminos on 10). The price-for-price table below has the detail, per mg (or per IU or mL for products sold that way).
Amino USA vs Southern Aminos: FAQ
Amino USA or Southern Aminos: which is better?
Southern Aminos takes this matchup by a razor-thin margin, 8.09 to 7.78 on the published formula. Its biggest edge is lab credibility, where it scores 9.0 against Amino USA's 8.0. It isn't a clean sweep. Amino USA actually edges ahead on operating history (4.2 vs 2.3), so if that factor matters most to you it's worth weighing. On lab evidence, the heaviest-weighted factor, both Amino USA and Southern Aminos have independently verified third-party COAs, so the gap comes down to the other categories. Across the 14 peptides both carry, Southern Aminos is cheaper per unit more often (Amino USA wins on 4, Southern Aminos on 10). The price-for-price table below has the detail, per mg (or per IU or mL for products sold that way).
Do Amino USA and Southern Aminos both use third-party testing?
Amino USA: independently verified third-party COAs. Southern Aminos: independently verified third-party COAs.
How was this comparison scored?
Both vendors are scored on the identical published formula: lab credibility 55%, shipping 20%, pricing 15%, operating history 5%, transparency 5%. When third-party testing cannot be independently verified, a testing gate holds the score under a cap that starts at 6.0 and rises by at most 2.5 points for operating history, shipping and reviews. Neither vendor can pay to change a score.
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