Staging preview: health content pending qualified review
D2C Peptides

Peptides for sale

Research peptides for sale from D2C Peptides: 45 peptides and 7 lab supplies, each labeled for research use and shipped from the USA and Canada to addresses across the United States.

Wholesale and bulk

Shop by category

This peptide shop sorts its research peptides into 12 categories, from weight loss and growth hormone peptides to sleep and stress, cognitive and reproductive health. The names group products by research interest; they are not health claims. A compound can sit in several categories, and some sit in none, such as Sermorelin, SS-31, Semax, Thymosin Alpha-1 and short peptides like Pinealon; those appear only in the full list on this page. The semaglutide, tirzepatide and retatrutide research vials are filed under weight loss peptides. Plain-language guides to the compounds, with their sources, are in Learn.

45 products

Questions about a compound before you order? The peptide research library summarizes published sources.

Comparing vial sizes? Our price and buying guides show the cost per mg math.

Research use and the law

Every product here is labeled: For research use only. Not for human or veterinary use. That label has legal limits. Federal rules let an unapproved new drug be shipped for test-tube or lab animal research only under a caution that ends "Not for use in humans," and the shipper must check that the buyer regularly does such research.6 Under federal rules, a product's intended use can be shown by its labeling claims, advertising, the seller's statements and the circumstances of its sale.7 In warning letters dated August 24, 2026, FDA told three online peptide sellers that research-use labels did not change its finding: their websites showed the products were meant as drugs for human use.8910 Read our research use policy before you order.

How to check quality

A certificate of analysis should do more than print a purity figure. FDA's Q7 guidance for makers of active drug ingredients says certificates should be issued for each batch on request, list each test with its acceptance limits and numerical results, be dated and signed by the quality unit, and give the original manufacturer's name, address and telephone number.11 EMA's synthetic peptide guideline lists tests a peptide's specification may include, among them identity, total and individual impurities, water content, residual solvents, elemental impurities, bacterial endotoxins and microbiological purity.12 For a peptide medicine, the European Pharmacopoeia thresholds that EMA cites ask for peptide-related impurities to be reported above 0.1%, identified above 0.5% and qualified above 1.0%.12 Hold any vendor's documents up against that list.

Ordering facts

Orders ship from the USA and Canada to addresses across the United States. Delivery details are on the shipping page, return terms are on the returns page, and testing documents are listed on the lab results page as they become available. Diluent, syringes, needles and swabs are on the supplies page. Labs and resellers that buy in volume can apply for a wholesale account.

Frequently asked questions

Where can I buy peptides online?

If you are deciding where to buy peptides for laboratory work, this page lists every vial in our peptide store with its strengths, price and stock status. Search by compound name, or filter the list by category and by what is in stock. Vials and supplies go in the same cart, and every product is labeled: For research use only. Not for human or veterinary use.

Can I buy peptides in the USA?

Yes. Orders ship from the USA and Canada to addresses across the United States, so you can buy peptides in the USA from one cart. Where a strength is stocked in more than one place, its product page lets you choose where it ships from. Delivery details are on the shipping page, and return terms are on the returns page.

Do you ship peptides from Canada?

Orders ship from the USA and Canada, and each product page shows where each of its strengths can ship from. Delivery goes to addresses across the United States; see the shipping page for details. If you want to buy peptides in Canada for a Canadian address, note that Health Canada said in April 2026 that a research-use label does not make a peptide product legal or exempt from its rules, and it advised Canadians not to buy or use such products.1

How do I choose the best peptide vendor?

Ask each peptide vendor for a certificate of analysis for the lot you are buying, with a numerical result for each test rather than a pass mark. FDA's Q7 guidance expects a certificate to give the batch number and numerical test results.11 Testing of products bought online shows why. A 2018 Belgian study of falsified peptide drugs from suspected illegal internet pharmacies found purity of 5% to 75% for cysteine-containing peptides, plus arsenic and lead.2 A 2024 lab analysis of 3 semaglutide vials from illegal online pharmacies measured purity of 7.7% to 14.37%, against 99% claimed on the labels.3 The lab results page lists our documents by product and lot as they become available.

What supplies do I need with a peptide vial?

A freeze-dried (lyophilized) peptide needs a sterile diluent before use. FDA's inspection guide on freeze-drying lists the better stability of a dry powder among the process's advantages, and the need for a sterile diluent at reconstitution among its drawbacks.4 Bacteriostatic Water for Injection, USP is sterile water for injection with 0.9% or 1.1% benzyl alcohol added as a preservative.5 Diluent, syringes, needles and swabs are on the supplies page, and the reconstitution calculator works out the concentration for a chosen volume.

Sources

  1. Think twice before injecting peptides bought online: unauthorized products can seriously harm your health. Health Canada (Recalls and Safety Alerts), 2026.
  2. Impurity profiling of the most frequently encountered falsified polypeptide drugs on the Belgian market (Janvier S, et al.), PubMed abstract. Talanta, 2018.
  3. Multifactor Quality and Safety Analysis of Semaglutide Products Sold by Online Sellers Without a Prescription (Ashraf AR, Mackey TK, et al.), PubMed abstract. Journal of Medical Internet Research, 2024.
  4. Lyophilization of Parenteral (7/93), Inspection Guide. U.S. Food and Drug Administration, 1993.
  5. Bacteriostatic Water for Injection, USP (bacteriostatic water injection, solution), prescribing information, revised 11/2019. Pfizer (Hospira), 2019.
  6. 21 CFR 312.160 Drugs for investigational use in laboratory research animals or in vitro tests. Electronic Code of Federal Regulations (eCFR), 2026.
  7. 21 CFR 201.128 Meaning of intended uses. Electronic Code of Federal Regulations (eCFR), 2026.
  8. Warning Letter: Peptide Partners LLC (MARCS-CMS 735063), August 24, 2026. U.S. Food and Drug Administration, 2026.
  9. Warning Letter: NuScience Peptides LLC (MARCS-CMS 733652), August 24, 2026. U.S. Food and Drug Administration, 2026.
  10. Warning Letter: Royal Peptides LLC (MARCS-CMS 734884), August 24, 2026. U.S. Food and Drug Administration, 2026.
  11. Q7 Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients, Guidance for Industry (ICH Revision 1), September 2016. U.S. Food and Drug Administration (CDER, CBER), 2016.
  12. Guideline on the Development and Manufacture of Synthetic Peptides (EMA/CHMP/CVMP/QWP/367182/2025), adopted December 2025, in effect June 1, 2026. European Medicines Agency, 2025.