Selank Coupon
One field, one code, and a total that has to change on screen before you press confirm.
The selank coupon worth having is PEPTIDEDECK, which takes 50 percent off the list price and brings a 10 mg vial from $47.50 to $23.75. That is $2.38 per milligram, and it is applied in the coupon field at checkout rather than automatically.
This is a short page on purpose. There is one code, it does one thing, and the only parts that need explaining are the order you do it in and the two situations where it behaves differently from how people expect. This is research material sold for laboratory use, not for human consumption.
Where the order actually gets placed
Ascension Peptides, Selank
US-based and third-party tested. Enter the code on the payment step and the vial halves before you confirm.
The published certificate for lot 29-01260229 assays this vial at 12.29 mg against a 10 mg label, and reports no endotoxin or sterility testing. Buying 3, 5 or 10 takes 3%, 5% or 10% off the list price. Free shipping starts at $250.
- Two batch certificates per lot
- Shipping free over $250
- Out the door same day if you order before 2pm CST
Everything here is research material for laboratory use, not for human consumption. Affiliate links, so we may earn a commission at no cost to you. Prices last checked August 21, 2026.
What the selank coupon changes, in numbers
| Stage | 10 mg vial | Per mg |
|---|---|---|
| Struck-through original | $60.00 | $6.00 |
| Current list | $47.50 | $4.75 |
| After PEPTIDEDECK | $23.75 | $2.38 |
Two reductions are visible on the product page and only one of them is the code. The vendor already moved the list from $60.00 to $47.50, and PEPTIDEDECK halves whatever the list happens to be on the day you buy. If the list moves again, the code still takes half, and the arithmetic above is the thing to redo rather than the discount to doubt.
The order of operations at checkout
The code is not the first thing you do, and the sequence is the part people get wrong.
Build the cart first. Add the vial, and add the consumables in the same order if you need them, because a Selank vial is dry lyophilised powder and bacteriostatic water, syringes and alcohol wipes are separate products with separate lines. Adding them later means a second order and a second shipping charge.
Enter the code second, in the coupon or discount field on the cart or checkout page. Apply it. Then stop and read the screen. The line item for the vial should now say $23.75, and the subtotal should have moved by the same amount. A field that swallows the code without changing anything has not applied it.
Check the shipping line third, because it is charged separately and the code does not touch it. Domestic shipping is a flat $15 unless the cart clears $250. One discounted vial does not, so the realistic figure at the payment step is $38.75.
Confirm last, and only once those three numbers read the way you expect. This is worth doing properly because the vendor states that once an order has been processed or shipped it cannot be cancelled, modified or returned, and all sales are final. There is no undo screen and no support ticket that reprices a confirmed order. The thirty seconds spent reading the subtotal is the entire safety net.
One free thing to do while you are there: orders placed after 2 P.M. Central are processed the next business day. The code does not care what time it is, but the delivery date does.
What it does not stack with, stated plainly
The vendor runs quantity tiers alongside the code. Buying 3, 5 or 10 vials takes 3, 5 or 10 percent off list, landing at $46.08, $45.13 and $42.75 per vial.
Whether PEPTIDEDECK applies on top of a tiered price is not documented anywhere the vendor publishes. We are not going to claim it does. Assume it does not, build the cart both ways if you are buying multiples, and compare the two subtotals in front of you.
The comparison is not close in any case:
| Route | Vials | Cart total | Per mg |
|---|---|---|---|
| Coupon, single vial | 1 | $23.75 | $2.38 |
| Tier, three vials | 3 | $138.23 | $4.61 |
| Tier, five vials | 5 | $225.63 | $4.51 |
| Tier, ten vials | 10 | $427.50 | $4.28 |
Ten percent off ten vials is nearly double the per-milligram cost of fifty percent off one. The tier route only makes sense if you wanted ten vials anyway.
The one place the coupon works against you
Free shipping starts at $250, and the code halves the value of every line in the cart before that threshold is measured.
Ten vials at the ten percent tier come to $427.50 and ship free. The same ten vials at the coupon price come to $237.50, which is $12.50 short, so the flat $15 applies. A cart that looks like it should obviously qualify does not, and the reason is that the discount happens first.
This is not a trap, it is just an ordering effect, and it is visible on the checkout screen before you pay. Read the shipping line rather than assuming a large cart is exempt.
What no discount code touches
At $23.75 the price stops being the interesting variable, and what replaces it is the testing scope on the specific lot you are sent.
Ascension publishes two certificates for Selank and they do not cover the same ground. The February 2026 certificate for lot 29-01260229 reports 99.32 percent purity by HPLC-UV, confirms identity by mass spectrometry, and stops there. The June 2026 certificate for lot 29-05260628 reports 99.371 percent purity and adds an endotoxin safety screen at or below 0.5 EU/mL marked pass, a microbial sterility screen returning no growth, and arsenic, cadmium, lead and mercury all negative.
That gap matters because FDA's stated concern about this compound is immunogenicity arising from aggregation and peptide-related impurities, which is a question an endotoxin and sterility screen speaks to and a purity figure does not. The agency records Selank among substances nominated for the compounding list and then withdrawn, and it holds no FDA approval for any use.
So the thing to do when the box lands is not to re-check the price. It is to read the lot number printed on the vial, look up the certificate for that lot, and see which of the two scopes you were sent. Both cost $23.75.
Common questions
Common Concerns
What is the current selank coupon and what does it do?expand_more
Where in the checkout does the selank discount code go?expand_more
Does the selank promo code stack with the 3, 5 and 10 unit discounts?expand_more
Does the coupon get you to free shipping faster?expand_more
Is there anything the discount does not change?expand_more
Keep exploring
The full Selank price breakdown runs the tiers, the assayed quantities and the consumables total in one place. The same code covers the rest of the catalogue, so the retatrutide coupon page and the BPC-157 coupon page are worth a look if you are building a single cart rather than paying two shipping charges.