PS 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.

The short answer

• Swiss Chems scores higher on our six public-information checks: 72/100 against 22/100, ahead on domain age, naming an independent lab, published policies and buyer-protected payment. The score covers openness only: Swiss Chems stays out of our rankings because of the warning above. Unfinished checks score 0 (PS Peptides: 5 of 6 checks completed).
• PS Peptides is cheaper on 18 of the 25 peptides both sell, and Swiss Chems on 6 (1 tie). Where they differ, the typical gap is 42% 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.
• PS Peptides' domain was registered Nov 2025 (11 months ago); Swiss Chems' domain was registered Jun 2020 (6.3 years ago).
• PS Peptides says it ships to the US, Canada, the UK, the EU and Australia, and internationally; 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

Vendor sites: pspeptides.com · swisschems.is

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: PS Peptides and Swiss Chems. How we score.

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.

PS Peptides is cheaper on 18 of the 25 peptides both sell, and Swiss Chems on 6 (1 tie). Where they differ, the typical gap is 42% per milligram. Prices fetched Oct 15, 2026; they change daily.

Against every vendor we track, PS Peptides' prices are typically 5% below 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 PS Peptides (24): 5-Amino-1MQ, AHK-Cu, AOD-9604, Cagrilintide, Cagrilintide + Semaglutide blend, CJC-1295 with DAC, Eloralintide, FOXO4-DRI, GHK-Cu + KPV blend, IGF-1 LR3, KPV, Mazdutide, Melanotan I, Melanotan II, NAD+, PE-22-28, Retatrutide, Semaglutide, Semax + Selank blend, Snap-8, Survodutide, Tesamorelin, Tirzepatide, VIP (vasoactive intestinal peptide).

Only at Swiss Chems (18): ACE-031, Bronchogen, Cardiogen, Cartalax, Chonluten, Cortagen, Follistatin, Gonadorelin, HGH Fragment 176-191, Livagen, MGF, Ovagen, Pancragen, PEG-MGF, Pinealon, Prostamax, Testagen, 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 price matters most: PS Peptides was cheaper on 18 of the 25 peptides both sell.
• If a longer track record matters: Swiss Chems' domain is 6.3 years old, PS Peptides' 11 months.
• Whatever its strengths here, we don't recommend Swiss Chems, because of the warning at the top of this page.

Only the differences that show up in our data. We haven't lab-tested either vendor's products.

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 PS Peptides and Swiss Chems, and at least one of the same peptides. Payments from vendors never affect this list.

Full profiles: PS Peptides review · Swiss Chems review · other comparisons.

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.