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Answered from 818 dated cart reads rather than from a claim. Updated October 11, 2026.
It was applied to a live cart on October 11, 2026: $40.00 CAD became $36.00 CAD, exactly $4.00 CAD off. Every dated test is published, so you can see the last time it was checked rather than taking a claim on trust.
Every day. The record runs 43 days and 138 entries for the primary code, each one a separate cart at a different value.
None has appeared across 818 reads on baskets from $40.00 to $1,800.00. That is not the same as proving none exists — it means none has surfaced across the range we have tested.
No exclusion has appeared across 90 distinct products tested, including the highest-priced items.
At the cart review stage, before any address or payment step. You should see a discount line under the subtotal naming the code and the amount. If it is not there, nothing has been applied.
Usually one of three things: a code already attached to the cart from an earlier visit, an excluded product, or a minimum. The store applies one code at a time, so removing an existing one and retrying resolves most cases.
No — they compound. The code comes off the subtotal first and the payment-method reduction applies to what remains, so the total is 30%, not the sum of the two rates.
An independent Canadian research site, not the vendor. We earn an affiliate commission if the code is used, at no extra cost to you, which is why every figure is published in a form you can check.
Anything about whether products work, anything past the cart, and anything about the testing laboratory's accreditation. Purity is composition, not effect.
Growth Guys — Growth Guys (growthguys.com) is a Canadian research-peptide vendor shipping domestically within Canada. It is a different company from The Growth Guy (thegrowthguy.net, executive coaching), Growth Supplements (Brazilian sports nutrition), and Grow Guys (growguys.co.uk). Discount codes for those brands do not work at growthguys.com. The Growth Guys promo code HEALTHYLIFE10 is exactly 10% off sitewide, no minimum purchase and no product exclusions.