Our current pick for research peptides is SwissChems: it lists around 50 peptides, supplies them as freeze-dried (lyophilized) powder, and publishes lot-specific third-party lab reports. Below are the peptides readers ask about most, what we checked, and what to know before buying.
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Before you buy peptides
- Most “research peptides” have little or no human data. TB-500 and BPC-157, for example, have no completed human trials of the injected product; our fact sheets say exactly what has and hasn’t been studied.
- Peptides sold online are not medicines. The FDA reviewed several of them for compounding in 2026 and raised concerns about impurities and immune reactions with injected peptides.
- Most are banned in sport. BPC-157, TB-500, growth hormone secretagogues (ipamorelin, CJC-1295, sermorelin) and IGF-1 analogs are on the WADA Prohibited List.
Peptides available from our current pick
| Peptide (our evidence page) | Shop |
|---|---|
| BPC-157 | Capsules · arginine salt |
| TB-500 | Vials (2, 5 or 10 mg) |
| BPC-157 + TB-500 blend | Vials |
| Ipamorelin | 2 mg vial |
| CJC-1295 | Without DAC, 2 mg |
| Tesamorelin | 2 mg vial |
| Sermorelin | 2 mg vial or kit |
| IGF-1 LR3 | 1 mg vial |
| MOTS-c | 10 mg vial |
| GHK-Cu | Vial |
Why SwissChems is our current pick for peptides
- Lot-specific reports. SwissChems publishes lot-specific certificates of analysis on its independent test results page (131 reports were listed when we checked on 30 October 2026). Each report names the product, the lot and the lab. The report we opened, for GW-501516 (cardarine) lot J26CYG, was issued by Freedom Diagnostics Testing on 3 October 2026 and shows identity confirmed by LC-MS and 99.79% purity by HPLC.
- How peptides are reported. Its FAQ explains that freeze-dried peptides are reported with an exact purity figure, that blends are assessed on identity and content of each component, and that bacteriostatic water is not included.
- Quality claims. Its quality assurance page sets out a written claim process: if your own third-party lab test (with chromatograms and the lot number) shows a problem within 30 days of delivery, SwissChems says it will review it and, if confirmed, replace the product or credit it and pay up to $100 of the testing fee.
- Shipping. Shipping, per its shipping page: US orders go by USPS (3–5 business days flat rate, 5–7 days on free shipping) or FedEx Overnight / 2-Day for eligible addresses; international orders go by USPS (2–3 weeks, 1–2 weeks to Canada). Orders ship Monday to Friday, and free shipping starts at $100 in the US and $300 internationally. Peptide vials and capsule products can arrive as two separate parcels.
- Payment. Payment, per its payments page: Visa and Mastercard for US-issued cards, bank and wallet transfers (Plaid ACH, Zelle, Interac, Coinbase) and seven cryptocurrencies (BTC, ETH, BCH, SOL, ZEC, TRX, DOGE). PayPal is not offered. Card charges show a payment processor’s name on your statement, not “SwissChems”.
More detail in our SwissChems review.
How to judge any peptide seller
- A lab report for your lot, not just “lab tested”. The report should name the product, the lot number on your bottle, the lab, the test dates, the method (HPLC for purity, LC-MS or similar for identity) and a chromatogram. A single number with no lab name proves very little.
- Recent reports. A certificate from years ago says nothing about the bottle you receive.
- Purity and content. Purity tells you how clean the material is; content tells you whether a capsule holds the amount on the label. Good reports show both.
- A way to check the bottle. A lot number you can match, or a verification code.
- Clear written policies for shipping, seized or lost parcels and quality complaints.
- No human-use claims. Shops that promise gains, give dosing advice or call SARMs “supplements” are breaking the rules they rely on, which is a bad sign for everything else.
- Prices that make sense. Very cheap SARMs are a warning sign: testing every lot costs money.
Peptide Sciences, long one of the best-known peptide shops, has shut down; see Peptide Sciences alternatives. Our peptides hub covers the evidence for each peptide.
Frequently asked questions
Where can I buy research peptides online?
Research peptides are sold by online research-chemical shops. Our current pick is SwissChems, because it publishes lot-specific lab reports you can match to your vial.
Do peptides come with bacteriostatic water?
Not from SwissChems: its FAQ says bacteriostatic water for reconstitution is not included and must be bought separately.
How should peptides be stored?
SwissChems advises keeping freeze-dried vials sealed and away from light: refrigerated (4 °C) for active use and frozen (−20 °C) for long-term storage, and avoiding repeated freeze–thaw cycles.
Are research peptides safe?
For most of them, safety in people is simply not established. Our evidence pages say what has been studied, in whom, and what side effects have been reported. Talk to a doctor before using any of them.
Sources
- SwissChems: Independent test results (lot-specific lab reports) (2026). Checked 30 Oct 2026
- Freedom Diagnostics Testing: certificate of analysis, GW-501516 lot J26CYG (reported 3 Oct 2026) (2026)
- SwissChems: FAQs (lab testing, purity and variance) (2026). Checked 30 Oct 2026
- SwissChems: Quality assurance (2026). Checked 30 Oct 2026
- SwissChems: Shipping (2026). Checked 30 Oct 2026
- SwissChems: How to pay (2026). Checked 30 Oct 2026
- FDA Briefing Document, Pharmacy Compounding Advisory Committee, 23–24 July 2026: TB-500-related bulk drug substances (2026)
- WADA: The Prohibited List (2026) (2026)