Peptide discounts come in five forms: promo codes, bulk pricing, free-vial deals, free shipping and store offers such as first-order codes and memberships. This guide sorts every discount at the 12 research peptide stores in our directory by type, so you can see which one saves the most on your order and which ones you can combine. Codes were checked at checkout on October 12, 2026, unless another date is shown. We earn a commission if you order through our links or codes, at no extra cost to you.
The Best Peptide Discounts Right Now
| Discount type | Best deal | Store |
|---|---|---|
| Promo code | 30% off sitewide with FALL30 (fall sale) |
Arizen BioLabs |
| Bulk pricing | 40% off 10-vial kits, 50% off 50 or more vials | Arizen BioLabs |
| Code plus bulk pricing | 15% volume pricing, then 15% off with PEPTIDESPROM15 |
Drexa Labs |
| No code needed | 10% off, plus up to 30% off by quantity | Peptide Confidential |
| Free vial | Buy 2, get 1 free with pep |
Peptix USA |
| Free shipping | From $150 | HelloStacks, Peptix USA |
| First order | 20% off with an emailed welcome code | American Peptides |
Peptide Discount Codes
A discount code is the simplest saving: enter it at checkout and a percentage comes off. These are the codes we have tested ourselves, largest first.
| Store | Code | Discount |
|---|---|---|
| Arizen BioLabs | FALL30 (backup QUICK, 10%) |
30% off sitewide |
| HelloStacks | PEPTIDESPC |
20% off your order |
| Drexa Labs | PEPTIDESPROM15 |
15% off your order |
| PS Peptides | NOW10OFF |
10% off your order |
| Healius Peptides | abrar10 |
10% off entire order |
| American Peptides | ABRAR10 |
10% off store-wide |
| 99 Purity Peptides | PPEPTIDESPC10 |
10% off store-wide |
| Peptime | PPTXKW10 |
10% off your order |
| Synthesis Peptides | PEP2026 |
10% off your order |
Every code here is listed with the date we checked it on our verified peptide promo codes page.
Peptide Bulk Discounts
Most stores lower the price per vial as you buy more. The table shows the discount on each vial at each quantity. At most stores the count is per product, so mixing different peptides does not reach a tier. Peptide Confidential is the exception.
| Store | Bulk discount per vial | Mix products? |
|---|---|---|
| Arizen BioLabs | 4% at 2, 7% at 3, 20% at 5, 40% on 10-vial kits, 50% at 50+ | No, per product and strength |
| Peptide Confidential | 10% at 3, 20% at 5, 30% at 10 | Yes |
| HelloStacks | 10% at 5, 25% at 10 | — |
| Peptime | 10% at 3, 15% at 5, 20% at 10 | — |
| Drexa Labs | 5% at 3, 10% at 6, 15% at 10 | No, per product |
| Alera Research | 6% at 3, 8% at 5, 12% at 8 | No, per product |
| PS Peptides | 3% at 2, 5% at 3 or more | No, per product |
A dash means we have not confirmed whether that store’s tiers mix products.
Which Peptide Discounts Stack?
Stacking a code on top of bulk pricing is where the biggest savings are. What we found in testing:
- Drexa Labs:
PEPTIDESPROM15comes off after volume pricing. On 10 vials of one product, that is 15% off each vial, then 15% off the total: about 27.75% off overall. - PS Peptides:
NOW10OFFcomes off after the multi-vial discount. In our test, four BPC-157 5 mg vials cost $170.96 instead of $199.96, a saving of $29.00, or about 14.5%. - Peptide Confidential: its quantity savings stack with the deal-of-the-day price, and no code is needed for either.
- Alera Research: bulk pricing comes off the sitewide sale price.
- Peptix USA: in our cart test, the two-vial bundle discount applied and
pepthen added a free third vial. - Arizen BioLabs: codes do not apply to 10-vial bulk kits. Below 10 vials,
FALL30is the bigger saving. At 10 vials, the 40% kit price beats the code.
Most stores accept only one promo code per order, so two codes do not combine.
Buy 2, Get 1 Free Peptides
Peptix USA is the only store we list with a free-vial deal: buy two eligible vials, enter pep, and a third is added free. On October 19, 2026, two BPC-157 10 mg vials came to $77.50 after bundle pricing, and the third was added at no charge. That works out to about $25.83 per vial across all three. See the Peptix USA promo code guide.
Peptide Stores with Free Shipping
| Store | Free shipping from |
|---|---|
| HelloStacks | $150 |
| Peptix USA | $150 |
| Alera Research | $200 (US orders) |
| Arizen BioLabs | $200 (standard shipping) |
| Drexa Labs | $249 (US orders, counted after the code) |
| Synthesis Peptides | $250 (US orders), or every order with a paid membership |
| American Peptides | $300 |
| PS Peptides | UPS Ground was free on a $49.99 order in our test |
At Drexa Labs, the threshold is counted after the discount, so a cart just over $249 before the code may not qualify after it.
First-Order, Military and Membership Discounts
- American Peptides first order: 20% off with a one-time code the store emails once it confirms you as a qualified researcher. On later orders,
ABRAR10takes 10% off. - American Peptides military and first responders: 20% off year-round, with verification.
- Synthesis Peptides VIP: a $19.99 a month membership with free 2-day shipping, 5x points and early access to new products. It pays off mainly for frequent orders under the $250 free-shipping threshold.
- Peptide Confidential deal of the day: one product at a lower price until a stated end time, listed on the store’s Deals page.
We have not tested whether American Peptides’ 20% offers combine with ABRAR10.
How to Get the Biggest Peptide Discount
- Small order, one or two vials: use the largest percentage code. That is
FALL30at Arizen BioLabs while the sale lasts, thenPEPTIDESPCat HelloStacks. - Three to nine vials of one product: pick a store whose code stacks with bulk pricing, such as Drexa Labs or PS Peptides, or use Peptide Confidential’s automatic quantity savings.
- Ten or more vials of one product: compare Arizen BioLabs’ 40% kit price with Drexa Labs’ stacked discount of about 27.75%.
- Mixed products: Peptide Confidential counts every vial toward its tiers.
- Check shipping last. A code can push your total below a free-shipping threshold.
The promo code finder works out which code saves the most on your own cart total.
Frequently Asked Questions
What is the biggest peptide discount right now?
For a code, Arizen BioLabs FALL30 at 30% off sitewide. For bulk orders, Arizen’s 10-vial kits at 40% off and 50% off at 50 or more vials. With no code, Peptide Confidential reaches 30% off at 10 vials.
Do peptide stores offer bulk discounts?
Yes. Seven of the stores we list lower the price per vial as you buy more, from 3% off at PS Peptides up to 50% off at Arizen BioLabs.
Can I use two peptide discount codes on one order?
Usually not. Most stores accept one code per order. You can often combine one code with automatic bulk pricing, as at Drexa Labs and PS Peptides.
Which peptide store has free shipping?
HelloStacks and Peptix USA offer free shipping from $150. Alera Research and Arizen BioLabs start at $200.
Are cheap peptide deals safe?
A discount says nothing about quality. Before you buy, check that the store publishes a third-party certificate for the batch you are getting. Our guides to reading a peptide COA and peptide scams cover what to look for.
For every code in one table, see peptide promo codes and coupons. To compare stores on lab testing and shipping as well as price, see peptide vendors compared.
For laboratory research use only. Not for human consumption, diagnostic, or therapeutic use.