Canadian research peptides · independently tested
Independent testing at 244 reports, a 93.844% floor nobody trimmed, and Canadian shipping: the most documented peptide source in the country.
Growth Guys promo code, verified October 16, 2026: at Growth Guys (growthguys.com) the largest total discount on offer runs through HEALTHYLIFE10 — 10% off sitewide on any payment method, rising to 30% off in total when Bitcoin payment adds the store's own automatic 20%, with a $400.00 CAD cart settling at $280.00 CAD. The measured cart, line by line.
We are an affiliate: if you order from Growth Guys using this code we earn a commission, at no extra cost to you. We are not Growth Guys and have no ownership of or role in the company.
Growth Guys code not applying at checkout — last verified at checkout at Growth Guys (growthguys.com): October 16, 2026 (today), 01:47 ET — HEALTHYLIFE10 applied and working, taking $5.00 CAD off a $50.00 CAD cart, exactly 10% off sitewide, with no minimum purchase and no product exclusions, including HGH kits; 2 live-cart checks so far today.
Variable products do not enter the cart until a variant is chosen, so the code gets blamed for an empty cart. Reproduced deliberately.
| Cart subtotal | Discount | Paid | Rate |
|---|---|---|---|
| $50.00 CAD | −$5.00 CAD | $45.00 CAD | 10.0% |
| $70.00 CAD | −$7.00 CAD | $63.00 CAD | 10.0% |
| $75.00 CAD | −$7.50 CAD | $67.50 CAD | 10.0% |
| $280.00 CAD | −$28.00 CAD | $252.00 CAD | 10.0% |
| $100.00 CAD | −$10.00 CAD | $90.00 CAD | 10.0% |
Separate carts, same day (October 6, 2026), different values. Varying the subtotal is what makes this a test rather than a demonstration: a code with a quiet minimum would pass a fixed-value check every time. Nothing was ordered, and no card details were used.
At the cart stage, type HEALTHYLIFE10 into the discount field and confirm the total changed before moving on. It applies to guest carts, needs no account, and can be used again on a second order exactly as it was on the first.
244 Janoshik reports. 99.03% mean purity across the 181 that state one, from 93.844% at the bottom to 99.99% at the top, over 133 distinct products. Every report resolves on the laboratory's domain, not the seller's. Orders ship from within Canada and are billed in Canadian dollars. The vendor has been answering in public forum threads since November 2021. Every figure above, itemised.
Most products in the peptides category are variable products — they are sold in more than one packaging, typically a single vial or a 10-pack. A variable product does not enter the cart until a specific variant has been chosen. Miss that step and the store accepts the click, the page looks like it worked, and the cart stays empty.
A discount code applied to an empty cart cannot do anything, and the message you get does not say "your cart is empty" — it reads as the code failing. We reproduced this deliberately while building automated cart tests: 66 of roughly 90 products in that category could not be added without selecting a variant first. Before troubleshooting the code at all, confirm the cart line actually shows the item and a quantity.
The store accepts one discount code per order. If another coupon is already applied — from an earlier session, a browser extension, or an abandoned cart you returned to — the one you are entering now will be refused, and refused silently. The total simply does not move.
Clear the discount field entirely, confirm no existing discount line is shown, then apply the code you want. Our own daily testing has to strip previously applied coupons before each run for exactly this reason: a leftover coupon makes a perfectly valid code look dead, which is almost certainly what has happened to most people who have concluded a code expired.
Copying a code from a page frequently picks up a trailing space, and a field that does not trim it will reject HEALTHYLIFE10 plus a space as an unknown code. Type it by hand once before concluding anything — it costs five seconds and eliminates a surprising share of failures.
Coupon-hunting browser extensions are the second quiet cause: several of them inject candidate codes into the field during submission, and one of their attempts can take the single available slot. Disable them for the attempt. The third is the storefront — there is a Canadian store and a separate United States store, a code belongs to the one that issued it, and the currency beside the cart total tells you immediately which you are on.
HEALTHYLIFE10 is entered at the cart stage, not at the payment step. When it applies, the cart recalculates immediately and a discount line appears equal to exactly one tenth of the subtotal. If that line is not there, nothing has been applied, and continuing further into the checkout will not apply it later.
That is also why the cart stage is the right place to test: you find out while the only thing at stake is a page refresh, rather than after your card details are in. If you have reached a payment screen and are still looking for somewhere to put a code, you have gone one step too far — go back.
Run them in order of how quickly each can be ruled out. Does the cart actually contain a line item with a quantity, or did a variant never get selected? Is any other discount already applied? Was the code typed rather than pasted? Are extensions off? Is the currency beside the total the one you expect?
If all five are clean and the discount line still does not appear, then the code genuinely has not applied on that cart, and that is worth knowing rather than guessing at. As of October 6, 2026 it applied on a live cart, as it has on every one of the 38 consecutive days it has been tested — so a failure after those five checks is much more likely to be something about that particular session than about the code.
Working as of the October 16, 2026 run: $5.00 CAD off $50.00 CAD, exactly 10%, on a live cart at growthguys.com. If a run ever fails the date here stops moving, which is the point of stamping it.
Most often the cart is empty without looking empty: most peptides are variable products that do not enter the cart until you choose a packaging option. A code applied to an empty cart cannot do anything. Confirm there is a line item with a quantity first.
Yes. One discount code applies per order, and a leftover coupon from an earlier session or a browser extension occupies that slot and causes a silent refusal — the total just does not change. Clear the field completely, then apply your code.
At the cart stage, not the payment step. The cart recalculates immediately and shows a discount line equal to exactly one tenth of the subtotal. If no line appears there, nothing has applied and continuing will not change that.
Every cart test we have run, with dates →
See the HEALTHYLIFE10 cart reading for October 16, 2026. Every daily test, back to the first on record, is kept in the HEALTHYLIFE10 dated cart archive.