HelloStacks has the larger listed code: PEPTIDESPC gives 20% off, while PS Peptides’ NOW10OFF gives 10%. Both were rechecked on November 2, 2026. For a single US order, compare the same compound and vial size after applying each code. For a multi-vial order, PS Peptides’ code stacked with its bundle price in our test; we have not yet tested whether HelloStacks’ 20% code combines with its own quantity breaks.
| Question | PS Peptides | HelloStacks |
|---|---|---|
| Code | NOW10OFF, 10% off |
PEPTIDESPC, 20% off |
| Quantity pricing | 3% or 5% bundle price stacked in our test | Published 10% at 5 units, 25% at 10; code stacking untested |
| Lab evidence | Purity, content and separate safety reports on products we inspected | Vanguard Laboratory certificates with purity, assay and endotoxin on lots we inspected |
| Shipping | US plus listed international destinations | US addresses only; free over $150 |
Which discount is stronger?
On the same eligible subtotal, 20% removes more than 10%. But HelloStacks’ product price, shipping and the possibility of a separate quantity deal determine the final result. We should not imply a combined 45% HelloStacks discount: its 25% ten-unit tier and 20% code have not been tested together. PS Peptides’ four-vial BPC-157 example did combine discounts and yielded about 14.5% off the original single-vial total in September 2026. Use current carts for current prices.
Which reports are more complete?
The HelloStacks BPC-157 and MOTS-C certificates we opened from Vanguard Laboratory included purity, assay and an LAL endotoxin test. Its library had 31 certificates against 52 vial products when we reviewed it, so confirm that your product has a matching lot. PS Peptides’ product pages we checked had separate links for purity, heavy metals, endotoxin and sterility. Neither store’s report for one product proves the same testing for every product.
See our PS Peptides code and lab review and HelloStacks discount review. We earn a commission if you order through our links or codes. Research peptides are for laboratory use only, not human or animal use.
Frequently Asked Questions
Does the HelloStacks code stack with its 25% quantity tier?
We have not tested that combination. Check whether both savings appear in a qualifying cart before relying on it.
Does HelloStacks ship internationally like PS Peptides?
No. HelloStacks lists US shipping only; PS Peptides lists the US, Canada, EU, UK and Australia among its destinations.