American Peptides vs Swiss Chems: prices, COAs and track record compared
Side by side from public evidence and live prices, checked Oct 15, 2026. Neither vendor paid to be here, and we haven't lab-tested either, so this compares openness and price, not purity.
Swiss Chems: FDA warning letter to Swisschems (Dec 10, 2024). Sources.
We leave vendors named in an FDA warning letter, lawsuit, seizure or other regulator action in the past three years out of our rankings, shortlists and alternatives, whatever their prices.
The short answer
- Swiss Chems scores higher on our six public-information checks: 72/100 against 47/100, ahead on domain age, naming an independent lab and buyer-protected payment (American Peptides leads on business identity). The score covers openness only: Swiss Chems stays out of our rankings because of the warning above. Unfinished checks score 0 (American Peptides: 5 of 6 checks completed).
- Each is cheaper on 9 of the 21 peptides both sell (3 ties). Where they differ, the typical gap is 18% per milligram. We don't recommend Swiss Chems whatever the price (see the warning above).
- Both publish only generic or sample COAs, not batch-specific ones.
- American Peptides' domain was registered Feb 2026 (7 months ago); Swiss Chems' domain was registered Jun 2020 (6.3 years ago).
- American Peptides says it ships to the US; Swiss Chems says it ships to the US and Canada, and internationally.
- We haven't lab-tested either vendor, so none of this measures purity.
At a glance
| Fact | American Peptides | Swiss Chems |
|---|---|---|
| Website | americanpeptides.us | swisschems.is |
| Status | Live | Live |
| Transparency score | 47/100 (5 of 6 checks) | 72/100 |
| Domain registered | Feb 21, 2026 (7 months ago) | Jun 25, 2020 (6.3 years ago) |
| First archived | Apr 7, 2026 | Jul 9, 2020 |
| COAs | Generic COAs only | Generic COAs only (Janoshik Analytical) |
| Ships to (stated) | US | US, Canada, worldwide |
| Payment (stated) | Not stated | Card, ACH, Crypto |
| Shop platform | Shopify | WooCommerce |
| Peptides priced | 39 | 43 |
| Typical price vs market | 45% above the median | 20% above the median |
| Enforcement (3 years) | None found | FDA warning letter to Swisschems (Dec 2024) |
| Our lab tests | None yet | None yet |
Transparency checks side by side
The same six checks of public information we run on every vendor, worth 100 points in total. The evidence behind each finding is linked on each vendor's profile: American Peptides and Swiss Chems. How we score.
| Check | American Peptides | Swiss Chems |
|---|---|---|
| Domain age | Registered Feb 21, 2026 (7 months old) | Registered Jun 25, 2020 (6.3 years old) |
| Public certificates of analysis | Only generic or sample COAs are public | Only generic or sample COAs are public |
| Independent lab named on COAs | No independent lab named | Lab named: Janoshik Analytical |
| Business identity | Company name (American Peptides LLC) and address published | No company name or address found |
| Shipping, refund and terms pages | All three found | All three found |
| Card or PayPal payment (buyer protection) | Payment methods not stated publicly | Site lists card, ACH and crypto |
| Total | 47 | 72 |
Prices on the peptides both sell
Each vendor's lowest comparable price per milligram, picked the same way as on our price pages: single vials before multi-vial kits, in stock before out of stock. Vial sizes differ (shown under each price), and a bigger vial usually costs less per milligram.
| Peptide | American Peptides | Swiss Chems | Cheaper per mg |
|---|---|---|---|
| GHK-Cu | $0.750/mg | $1.38/mg | Cheaper per mg: American Peptides, 46% less |
| BPC-157 | $6.67/mg | $6.00/mg | Cheaper per mg: Swiss Chems, 10% less |
| TB-500 | $10.00/mg | $11.98/mg | Cheaper per mg: American Peptides, 17% less |
| Ipamorelin | $8.00/mg | $8.78/mg | Cheaper per mg: American Peptides, 9% less |
| MOTS-c | $4.00/mg | $7.00/mg | Cheaper per mg: American Peptides, 43% less |
| PT-141 (bremelanotide) | $6.00/mg | $5.00/mg | Cheaper per mg: Swiss Chems, 17% less |
| Semax | $6.50/mg | $2.46/mg | Cheaper per mg: Swiss Chems, 62% less |
| SS-31 (elamipretide) | $4.30/mg | $7.50/mg | Cheaper per mg: American Peptides, 43% less |
| Selank | $6.50/mg | $5.19/mg | Cheaper per mg: Swiss Chems, 20% less |
| Epitalon | $6.00/mg | $2.32/mg | Cheaper per mg: Swiss Chems, 61% less |
| Sermorelin | $12.00/mg | $12.97/mg | Cheaper per mg: American Peptides, 8% less |
| DSIP | $11.00/mg | $12.47/mg | Cheaper per mg: American Peptides, 12% less |
| Glutathione | $0.113/mg | $0.050/mg | Cheaper per mg: Swiss Chems, 56% less |
| Kisspeptin-10 | $6.00/mg | $6.00/mg | Same price per mg |
| Thymosin Alpha-1 | $12.50/mg | $12.80/mg | Cheaper per mg: American Peptides, 2% less |
| Pinealon | $3.00/mg | $2.90/mg | Cheaper per mg: Swiss Chems, 3% less |
| ARA-290 (cibinetide) | $8.20/mg | $5.35/mg | Cheaper per mg: Swiss Chems, 35% less |
| CJC-1295 without DAC (Mod GRF 1-29) | $11.00/mg | $21.48/mg | Cheaper per mg: American Peptides, 49% less |
| P21 | $24.00/mg | $22.99/mg | Cheaper per mg: Swiss Chems, 4% less |
| Prostamax | $3.00/mg | $3.00/mg | Same price per mg |
| Testagen | $3.00/mg | $3.00/mg | Same price per mg |
Each is cheaper on 9 of the 21 peptides both sell (3 ties). Where they differ, the typical gap is 18% per milligram. Prices fetched Oct 15, 2026; they change daily.
Against every vendor we track, American Peptides' prices are typically 45% above the median and Swiss Chems' prices are typically 20% above the median. That's our price index: the median of each vendor's best price per peptide against the market median. See every vendor's index.
Only at American Peptides (18): 5-Amino-1MQ, AOD-9604, CJC-1295 + Ipamorelin blend, Dihexa, Humanin, IGF-1 LR3, KPV, Melanotan I, Melanotan II, NAD+, PE-22-28, Semax + Selank blend, Snap-8, Tesamorelin, Tesamorelin + Ipamorelin blend, Thymalin, Vesugen, Vilon.
Only at Swiss Chems (22): ACE-031, Adipotide, BPC-157 + TB-500 blend, Bronchogen, Cardiogen, Cartalax, Chonluten, Cortagen, Follistatin, GHRP-2, GHRP-6, Gonadorelin, Hexarelin, HGH Fragment 176-191, Livagen, LL-37, MGF, Ovagen, Oxytocin, Pancragen, PEG-MGF, Thymagen.
Which one fits what you need
- If you want to pay by card or PayPal, which can be disputed: only Swiss Chems says it accepts them.
- If you want to know who you're buying from: only American Peptides names its company and publishes an address.
- If you're in Canada: only Swiss Chems says it ships there.
- If a longer track record matters: Swiss Chems' domain is 6.3 years old, American Peptides' 7 months.
- Whatever its strengths here, we don't recommend Swiss Chems, because of the warning at the top of this page.
History and alerts
- Dec 10, 2024, Swiss Chems: FDA warning letter to Swisschems. FDA reviewed swisschems.is and the seller's Facebook and Instagram accounts in October 2024 and found semaglutide and retatrutide for sale. It said 'research chemicals only' labeling did not change its finding that the products are unapproved new drugs. [1]
Before you order from either
- Ask for the batch COA that matches the vial you'll receive, and check it with our COA guide.
- Pay by card or PayPal where you can: both can be disputed if an order goes wrong.
- Check the domain is the vendor's real one. Look-alike sites copy well-known names (how to spot them).
- Our full checklist: how to check a peptide vendor.
Vendors that score higher than both
Live vendors with all six checks completed, a higher transparency score than American Peptides and Swiss Chems, and at least one of the same peptides. Payments from vendors never affect this list.
| Vendor | Status | Transparency | Prices tracked |
|---|---|---|---|
| Pure Peptide Labs | 90 | 44 | |
| Peptidology | 90 | 3 | |
| Eros Peptides | 87 | 14 |
Full profiles: American Peptides review · Swiss Chems review · other comparisons.
American Peptides vs Swiss Chems: questions people ask
Is American Peptides or Swiss Chems more legit?
Swiss Chems scores higher on our six public-information checks: 72/100 against 47/100, ahead on domain age, naming an independent lab and buyer-protected payment (American Peptides leads on business identity). Unfinished checks score 0 (American Peptides: 5 of 6 checks completed). The score measures how open a vendor is about who it is and what it sells, not product purity. Swiss Chems is left out of our rankings because of recent enforcement action. See both sets of checks.
Which is cheaper, American Peptides or Swiss Chems?
Each is cheaper on 9 of the 21 peptides both sell (3 ties). Where they differ, the typical gap is 18% per milligram. Against every vendor we track, American Peptides' prices are typically 45% above the median and Swiss Chems' prices are typically 20% above the median. Compare the prices.
Do American Peptides and Swiss Chems publish COAs?
Both publish only generic or sample COAs, not batch-specific ones. Our guide explains how to read a COA.
Where do American Peptides and Swiss Chems ship?
American Peptides says it ships to the US; Swiss Chems says it ships to the US and Canada, and internationally. We don't verify deliveries, so confirm at checkout.
Has American Peptides or Swiss Chems faced regulatory or legal action?
Swiss Chems: FDA warning letter to Swisschems (Dec 10, 2024). We found none for American Peptides in the past three years. Details and sources.
Is something wrong?
If you run either vendor, or you have evidence that something here is out of date, email [email protected] with a link to the evidence. We re-check within five business days and log every change on our corrections page.