Dirk Westwood

Dirk Westwood runs the price board and the coupon pages on Research Peptide Coupons. The work is narrow on purpose: open a vendor's own product, shipping and promo pages, copy down the price, the vial size and any offer that is shown, and note the date.

From those numbers Dirk works out the price per mg, so a 5 mg vial and a 10 mg vial can be put side by side. A code only goes on the site when the vendor shows it on its own site, and it is labelled with where it was seen. Codes are not tested at checkout.

Dirk does not buy, test or use any product and does not write about use in people or animals. Every product covered is sold for research and laboratory use only.

Checked on every vendor

• Codes shown on the vendor's own site, with the page and the date
• List price and vial size for each compound
• Price per mg, worked out from those two numbers
• Free shipping threshold
• Bulk and multi-vial discounts
• Whether a lot or batch COA is shown

Why the site works this way

Coupon sites for research peptides are full of codes that nobody checked. Some are expired, some never existed, and some lead to look-alike stores.

This site only lists what a vendor publishes on its own domain, with the date and the page. When there is no public code, the page says so.

Pages checked by Dirk Westwood

• Nov 6, 2026Peptide coupon codes, checked on the vendor's own site
• Nov 6, 2026Cheapest research peptides online, by price per mg
• Nov 6, 2026PSPeptides discount code: what the store offers today
• Nov 6, 2026Core Peptides coupon code: what corepeptides.com shows
• Nov 6, 2026Peptide Sciences coupon code: the store has stopped selling
• Nov 6, 2026Amino Asylum coupon code: the store closed in June 2025

Read the method sheet and the editorial policy.