Free Chrome & Edge extension
Never leave a coupon on the table
A free browser extension from PeptidePrices. It shows a small badge on our partner vendor sites and attempts to apply our best supported code at checkout, while clearly showing when a partner has no configured coupon.
Add to Chrome, it's freeHow it works
Shop a partner vendor
The extension recognizes 87 current partner sites. 75 currently have a configured coupon code it can attempt to apply.
See the badge
A small PeptidePrices badge appears when a coupon is available for that vendor, so you know before you check out.
It applies configured codes
When a partner has a supported coupon code, the extension attempts to apply it at checkout. Partners without a configured code show attribution status without pretending a discount exists.
Why you can trust it
Only runs on partner vendors
The extension is inert everywhere else on the web. It does not read, track, or modify anything outside the 87 partner sites in its generated configuration.
Zero data collection
No browsing history, no personal data, no tracking pixels. The extension applies a coupon code, that is all it does.
Disable anytime, per site
Turn it off entirely or for a single vendor with one click, right from your browser toolbar.
Built by an independent site
PeptidePrices is not owned by any vendor. We earn a small affiliate commission when you buy through a partner, at no extra cost to you, and that is the entire business model, disclosed here and everywhere else on the site.
PeptidePrices is reader-supported. We may earn a commission when you buy through a partner vendor link or coupon, at no extra cost to you. Read our full methodology.