How our members-only codes work
Why codes on PeptDeals are hidden until you verify your email, what one unlock gets you (every code for 180 days), and why we email you each code you open.
Guides
How to stack coupon codes with free shipping
One code box, one code — but free shipping isn't a code. How to pair our codes with the €99 / €99 / €75 free-shipping lines.
“Can I use two codes?” is the question we get most. The short answer: almost never two codes — but very often a code plus free shipping. Free shipping at our partner shops isn’t a coupon. It kicks in automatically once your cart passes a certain amount. That means it sits on top of whatever code you use, and that’s where the real stacking happens.
This guide walks through how to do it at our three partner shops: Nexo Research, Europa-Peptide and Peptid24.
The three numbers to remember
| Shop | Free EU shipping from |
|---|---|
| Nexo Research | €99 |
| Europa-Peptide | €99 |
| Peptid24 | €75 |
Those thresholds come straight from the shops’ published terms. Nexo Research and Europa-Peptide both ship free across the EU from €99. Peptid24 has the lowest line of our partners at €75.
Rule one: one code box, one code
Most shops have a single coupon field at checkout. Type a second code in and it simply replaces the first. So your first decision is always: which single code is worth the most for this cart?
Three things decide that:
- The minimum order. A big percentage code with a €100 or €150 minimum does nothing for a €70 cart.
- Who it’s for. Welcome codes are usually limited to new customers and one use.
- What it is. A shipping code uses up your one code slot — only pick it if the shipping saving beats your best percentage code.
Every card on PeptDeals shows the minimum order on the front and the rest under Terms. Read them before you build your cart.
Rule two: let free shipping do the second job
Because the free-shipping line isn’t a code, you don’t have to choose between it and a discount. The trick is to make your cart land above the threshold with your code applied.
Here’s the order we use:
- Build the cart you actually need.
- Pick the code with the best saving for that cart (check the minimum!).
- Look at the total after the discount. Shops can count the threshold before or after the coupon — watch what the checkout shows, not what you expect.
- If you’re just under the line, top up with something you’d buy anyway. Spending €8 more to avoid a shipping fee is fine; spending €40 more is not.
Worked examples
These use round, made-up cart values so you can follow the logic. Live codes and their exact terms are always on our coupon page.
Nexo Research, cart of €120. You’re over the €99 line, and over the €100 minimum of our PeptDeals-only partner code. So: apply the members-only code, and free shipping comes along as long as the discounted total stays where Nexo needs it. If the discount drops you under €99 on the checkout screen, a small top-up brings the free shipping back.
Europa-Peptide, cart of €85. You’re under €99. Two options: add one more item you need to cross the line, or use a shipping code instead of a percentage code. At the time of writing we have a code that brings Europa-Peptide’s free shipping down to orders from €49 — but remember it takes your one code slot.
Peptid24, cart of €80. You’re already past the €75 line, so you get free shipping and can use a sitewide percentage code. If the discount pulls the total under €75, check whether the shipping fee comes back — this is exactly the case where adding a small item can pay off.
When not to stack
- Don’t buy things you won’t use just to reach a threshold. The saving disappears the moment you overspend.
- Don’t chase a bigger percentage with a higher minimum if your real cart is far below it.
- Don’t cycle through codes on one order. Shops don’t like it, and it doesn’t work anyway.
The 20-second checklist
- Note the free-shipping line: €99 at Nexo Research and Europa-Peptide, €75 at Peptid24.
- Pick the one code with the best saving for your cart, minimum included.
- Check the total after the discount on the checkout page.
- Top up only if the extra item is something you’d buy anyway.
- Unlock the code on PeptDeals first — we also email you a copy, so it’s not lost in a tab.
Want the codes that make this work? Unlock all partner codes with one email. And if you’re deciding where to order, our guide to free-shipping thresholds has more on when adding an item pays off.
Products at these shops are sold for laboratory research use only. Nothing here is medical advice.