Affiliate disclosure: the codes below were set up for our readers, and we earn a commission when you buy through our links. That's how this site pays for itself. It costs you nothing extra, and it never changes the order of the full price comparison tables, which always rank by cost per mg. Research use only.
Most coupon sites list codes scraped from around the web, and half of them are expired by the time you paste them in. This page works differently. Every code below was set up with the vendor for our readers, and the list is pulled live from the same data that powers our price tracker. If a vendor changes or drops a code, this page changes with it.
Current reader codes#
- 10% off
- 10% off
- 10% off
- 10% off
- 10% off
Enter the code at the vendor’s checkout. Affiliate links; research use only.Compare prices →
How to use one: copy the code, open the vendor through its link, and enter the code at checkout. The discount applies to the vendor's own prices at the moment you order.
What a code actually saves you#
A percentage off is only half the story. A vendor with a bigger discount can still cost more per milligram than one with a smaller discount and a lower list price. That's why our price tables already show every price after the reader discount, normalised to cost per mg. The number you see in a table is the number you'd pay with the code.
Two quick checks before you check out:
- Compare cost per mg, not sticker price. Vial sizes differ. A 10 mg vial and a 5 mg vial at similar prices are very different deals. Our guide to cost per mg walks through the maths.
- Look at the multi-vial kits. Many vendors price 3-, 5- and 10-vial kits lower per vial. Check the kit price on the compound's price page, and confirm at checkout that the code applied to the kit.
Why some vendors aren't listed#
We only list codes that were set up for our readers. If a vendor we track doesn't appear above, it's because we don't have a reader code with them. It isn't a judgment on the vendor. You'll still find every tracked vendor, with or without a code, in the price tables on each compound's page.
We don't republish codes from other sites or from social media. They're often expired, sometimes fake, and we can't vouch for them.
Frequently asked questions
Do these peptide coupon codes actually work?
Yes. Each one was issued to us by the vendor for our readers, and the list updates automatically from our vendor data. If a code ever fails at checkout, tell us through the contact page and we'll check it with the vendor.
Can I combine a code with a vendor's own sale?
That depends on the vendor's checkout. Some allow a code on top of a sale and some don't. Try the code at checkout: the vendor's cart shows whether it applied.
Is the discount already included in your price tables?
Yes. Every price in our tracker is shown after the reader discount, so you can compare vendors on what you'd actually pay.
Why use a code from here instead of a coupon site?
These codes come from the vendors directly, so they're current, and using them supports an independent price tracker that ranks every vendor by real cost per mg.
Research use only. The products sold by these vendors are for laboratory and research use. They are not approved by the FDA for human consumption, and nothing on this page is medical advice.