@Randy said:

Labor Day 2026 Peptide Vendor Sales Roundup

Labor Day is Monday, September 7. Here's every sale we've seen come through from vendors so far, sorted by discount depth. Most run through Tuesday, September 8. We'll update this thread as more come in — post below if you spot one we missed.

Where the PeptideCritic coupon stacks on top of the sale, it's marked STACKS. Use the link, then enter the code at checkout. Full list is always on the Coupon Codes page.

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Up to 65%+ Off

Southern Aminos Labor Day Weekend Sale — 50% Off Site-Wide + Our Code Stacks (Sept 5–7 Only)

Southern Aminos just rolled out their biggest promo since the Anniversary Sale, and it's a three-day window: Saturday, September 5 through Monday, September 7.

The Deal

50% OFF SITE-WIDE — applied across the whole catalog.

And it stacks. Southern Aminos is explicitly allowing 15% affiliate codes on top of the 50%, plus their tiered pricing on larger orders. Their words: "Stack. Save. Repeat."

~50% off stack

• Live now through Monday, Sept 7, 11:59 PM EST
• https://peptidecritic.com/go/nura-peptide

Flawless Compounds STACKS — Tiered sitewide discount, applied automatically based on cart subtotal:

• $0–$299: 35% off / $300–$399: 45% off / $400+: 50% off
• PeptideCritic code peptidecritic (15%) stacks on top of the tier
• Runs through Labor Day weekend
• https://peptidecritic.com/go/flawless-compounds

Glow Aminos STACKS — Same tiers as Flawless (sister company):

• $0–$299: 35% off / $300–$399: 45% off / $400+: 50% off, automatic
• PeptideCritic code peptidecritic (15%) stacks on top
• https://peptidecritic.com/go/glow-aminos

Hydro Research — 50% off all GLP-1s, 25% off everything else. No code needed. Pricing holds "while the stock does" — several items flagged as moving fast, no hard end date.

40% Off

EZ Peptides STACKS — 30% off every peptide, automatic. Pay with crypto for an extra 10% (40%), also automatic. Bacteriostatic water excluded.

• PeptideCritic code PEPTIDECRI10 (10%) stacks on the sale price
• Sept 2, 8:00 AM CT – Sept 8, 11:59 PM CT
• https://peptidecritic.com/go/ez-peptides

Ameano Peptides (AMP) STACKS — 30% off the full catalog (peptides + cosmetics), automatic. Extra 10% with crypto (40%). Bacteriostatic water excluded.

• PeptideCritic code peptidecritic (10%) stacks on top
• Sept 2, 8:00 AM CT – Sept 8, 11:59 PM CT
• https://peptidecritic.com/go/ameano-peptides

Genpeptide — 40% off all peptides with code LABOR40. Excludes Custom Kits and Regular Kit sales. Expires September 8. (Our 10% code is a separate coupon — vendor hasn't confirmed stacking, so use LABOR40 for the bigger discount.)

• https://peptidecritic.com/go/genpeptide

35% Off

Mile High Compounds OUR CODE IS THE SALE — The PeptideCritic code is boosted from 10% to 35% off the full catalog (5% more than the standard site discount) for the promo, including the new research sprays (Semax, Selank, Semax/Selank/Pinealon blend, BPC/TB blend).

• Code: PeptideCritic
• Not live until Sept 3 at 9:00 AM MST; runs through Sept 9, 11:59 PM MST
• https://peptidecritic.com/go/mile-high-compounds

25% Off

Paramount Peptides — 25% off sitewide with code LABORDAY25 (expires Sept 7), plus a free 10mL reconstitution solution on orders $500+. Our 5% code doesn't beat this — use LABORDAY25.

• https://peptidecritic.com/go/paramount-peptides
  Nura Peptide — 30% off + Buy 3 Get 1 Free sitewide, and our code stacks on both.
• Sale code: labor30 (30%) + PeptideCritic code: peptidecritic (20%) →

20% Off

Voltera Sciences — August end-of-month promo extended through Labor Day week under code September20 (auto-applied). Our code peptidecritic is also 20%. They've hinted something extra may drop for the weekend — will update if so.

• https://peptidecritic.com/go/voltera-sciences

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Non-peptide, but useful

Medex Supply — 60% off disposable nitrile gloves and other protection essentials for Labor Day.

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All products are sold for research use only. Discounts and dates are as stated in vendor communications received Aug 28 – Sep 2; verify at checkout.

@Nuncles