One code, verified, with the fine print actually written down. We are a ZestyRat affiliate and we disclose it — which is also why we can tell you when a code is real.
| Code | What it does | Applies to | Fine print |
|---|---|---|---|
| SHAUN10 | 10% off product subtotal | Entire catalog — all ~50 compounds | No minimum order. Works for new and returning buyers. Does not discount shipping. |
| Newsletter signup | 10% off first order | First order only | ZestyRat's own on-site offer. First purchase only — SHAUN10 keeps working after that. |
Coupon sites routinely list "free shipping" next to ZestyRat codes. That is not what their policy says, and we would rather you know before checkout than after.
Straight from ZestyRat's published shipping policy, confirmed September 2026:
Live cart, ZestyRat's own checkout, September 9, 2026. Applied, read the discount line, removed. We will re-run this on the first of every month and print the date here.
| Code | Advertised as | What it actually did on a $99.99 cart |
|---|---|---|
| SHAUN10 | 10% off | 10% off — $10.00. Works on the whole catalog, new and returning buyers, no minimum. |
| The "40% off" code on the coupon-spam pages | 40% off | 10% off — the same $10.00. The 40% is the headline, not the checkout. |
| The "30% off" code | 30% off | 10% off — the same $10.00. |
| The "25% off" code | 25% off | 10% off — the same $10.00. |
| The code from a peptide-comparison app | "exclusive" | Rejected — "coupon does not exist." |
So which one should you use? They cost you the same. Use the one whose page tells you the truth about shipping, doesn't invent a percentage, and re-tests the code on a schedule. That is the whole difference, and we would rather earn the sale that way.
Short answer: yes — and we have a financial interest in saying so, which is exactly why we show our work. ZestyRat is the vendor our readers order from more than any other on this site, and to date not a single order placed through our links has come back with a problem reported to us.
The full breakdown, including what we do not love, is in our independent ZestyRat Research review. If you want to see how they stack against the rest of the market first, start with our peptide company rankings.
The compounds our readers most often run SHAUN10 against:
Working out how much you need per vial? Use our free peptide reconstitution calculator.
SHAUN10. It takes 10% off your order total and goes in the coupon field at checkout. It is not limited to first-time buyers and there is no minimum order.
Yes — 10% off the product subtotal across the full catalog of roughly 50 compounds, including BPC-157, TB-500, CJC-1295, NAD+, Semax and the GLP-1 category. It discounts products, not shipping.
No. Shipping is calculated at checkout on weight, dimensions and destination, per their published policy. Orders go out the next business day via USPS Priority Mail or UPS in plain, discreet packaging. Any page advertising free shipping on every ZestyRat order is inaccurate.
No. We tested them at ZestyRat's checkout on September 9, 2026: every valid code — including the ones advertised as 40% and 30% off — took exactly 10%, the same as SHAUN10. One "exclusive" code did not exist. ZestyRat issues 10% affiliate codes; the bigger number is a headline, not a discount.
Yes, based on our independent review — 99%+ stated purity verified before dispatch, induction-sealed vials, founder-led with 22+ years in the field. It is the most-ordered vendor on this site with zero order issues reported to us. Full detail in our ZestyRat review.
There is no published expiration. We re-check it during our regular vendor audits and update this page if the offer changes.
Yes. Peptides Uncaged earns a commission when you order through our links or code, at no extra cost to you. We disclose it on every page per FTC guidelines, and it is why we publish the shipping terms other coupon pages leave out.
Before you order: ZestyRat reviews & complaints · purity & testing report · the full review