OneDay Compounds Coupon Code — 35% Off
Reveal your discount code below to save 35% at OneDay Compounds. Prof. Peptide verifies this code directly with the vendor and updates it when it changes.
Your Discount Code
See offer (opens OneDay Compounds in a new tab)Key facts
- Price comparison
- 37 of 37 comparable products cost less than the median for the same product and size across every vendor Prof. Peptide tracks — before the code
- Catalog
- 57 products at the 2026-10-17 pull · 37 in Prof. Peptide’s price comparison, 36 of those in stock · Lyophilized powder in vials, coded GLP lines, blends, capsules and nasal sprays, plus supplies
- Third-party testing
- ILS Laboratories & Vanguard Laboratory
- Certificates of analysis
- Certificates as images on each product listing, most from ILS Laboratories with a lab verification QR code, some from Vanguard Laboratory
- Prof. Peptide’s discount
- Press See offer above for the best current offer, including Prof. Peptide’s code
- Code checked
- Prof. Peptide confirmed this rate in a cart test on October 17, 2026.
Compare OneDay Compounds’ prices: SS-31, Melanotan II, PT-141, Tirzepatide, TB-500, Selank, CJC-1295 (no DAC) / Mod GRF 1-29, BPC-157
Overview
OneDay Compounds sells research peptides in lyophilized vials, with its GLP-class lines under coded names, alongside blends, nasal sprays and capsules.
Each product listing carries its own certificate of analysis, and most of those certificates print a QR code that opens the testing laboratory's record of the same report.
OneDay Compounds catalog & prices
OneDay Compounds sells research peptides in lyophilized vials, with its GLP-class lines under coded names and several blends, plus nasal sprays (Adalank, Adamax, Selank and Semax), capsules and reconstitution solution. The compounds are grouped below by Prof. Peptide's research-library categories.
- Metabolic & GLP-1
- Retatrutide (OC-3RT), Tirzepatide (OC-2TZ), Survodutide, Cagrilintide, MOTS-c, AOD-9604, 5-Amino-1MQ
- Recovery & Tissue Repair
- BPC-157, TB-500, a blend of BPC-157 and TB-500
- Growth Hormone
- CJC-1295 (no DAC), Ipamorelin, a blend of CJC-1295 (no DAC) and Ipamorelin, Tesamorelin
- Cognitive & Nootropic
- Semax, Selank, N-acetyl Selank amidate, Adamax (sold as 984 Da and 1032 Da), Adalank, Dihexa
- Skin Health & Anti-Aging
- GHK-Cu, AHK-Cu, GLOW, KLOW, Melanotan I, Melanotan II
- Gut Health & Immunity
- KPV, Thymosin Alpha-1
- Sleep & Recovery
- DSIP
- Longevity
- SS-31 (OC-SS), NAD+, Epitalon, Glutathione, SLU-PP-332
- Bioregulators
- Pinealon
- Sexual Health
- PT-141, Kisspeptin, Oxytocin
- Supplies
- Reconstitution solution
OneDay Compounds is running a sitewide sale of 35% off, and its banner states that discount codes stack with it. Prof. Peptide checked in OneDay's own cart on October 17, 2026 that its code applies on top of the sale price.
Prices are OneDay Compounds’ current prices, which is what the cart charges.. Prices current as of October 17, 2026.
Testing: Labs & Certificates of Analysis
OneDay publishes a certificate on each product listing, most from ILS Laboratories and some from Vanguard Laboratory. The ILS reports cover HPLC purity, net peptide content, identity and heavy metals, with a full QC panel adding sterility and endotoxin on some lots.
Prof. Peptide drew three ILS certificates at random and found each in ILS's own records, which returned nothing for an invented code first; each names OneDay Compounds as the client. They are for its GHK-Cu 100mg (99.96% purity), its Adalank Spray 15mg (99.46%) and its N-acetyl Selank amidate 10mg (99.62%).
All products are sold for laboratory research use only.
Prof. Peptide Verification
Verified · 17 October 2026
We identified the lab, matched the certificates on its own website, and read every test result.
Lab identified
PassedILS Laboratories
Certificates verified
Passed3 of 3 matched on ILS Laboratories’ own website.
The three certificates were tested on 29 May, 21 June and 22 July 2026.
Adalank Spray 15mg · lot OC-AL15-101
PassedILS Laboratories · tested 22 July 2026 · certificate COA-2026-THG2Q_
- Passed: Purity (HPLC) — 99.46% (spec ≥ 95.0%) · PASS
- Net Peptide Content — 15.8 mg
- Passed: Identity (ID) — Confirmed (spec Adalank; Adalank Spray) · PASS
- Passed: Sterility (PCR) — No Growth (spec No Growth) · PASS
- Passed: Endotoxin (USP <85>) — < .25 EU/mL (spec Report Result) · PASS
- Passed: Arsenic (As) — Not Detected (spec ≤ 1.5 ppm) · PASS
- Passed: Cadmium (Cd) — Not Detected (spec ≤ 0.5 ppm) · PASS
- Passed: Lead (Pb) — Not Detected (spec ≤ 1.0 ppm) · PASS
- Passed: Mercury (Hg) — Not Detected (spec ≤ 1.5 ppm) · PASS
- Passed: Chromium (Cr) — Not Detected (spec ≤ 10.0 ppm) · PASS
GHK-Cu 100mg · lot OC-GHK100-101
PassedILS Laboratories · tested 21 June 2026 · certificate COA-2026-4BNRC6
- Passed: Purity (HPLC) — 99.96% (spec ≥ 95.0%) · PASS
- Net Peptide Content — 103.85 mg
- Passed: Identity (ID) — Confirmed (spec GHK Cu) · PASS
- Passed: Arsenic (As) — 0.0978 ppm (spec ≤ 1.5 ppm) · PASS
- Passed: Cadmium (Cd) — Not Detected (spec ≤ 0.5 ppm) · PASS
- Passed: Lead (Pb) — Not Detected (spec ≤ 1 ppm) · PASS
- Passed: Mercury (Hg) — Not Detected (spec ≤ 1.5 ppm) · PASS
- Passed: Chromium (Cr) — 2.34 ppm (spec ≤ 10 ppm) · PASS
- Passed: Fentanyl Screen — Not Detected (spec Immunoassay, 50 ng/mL cutoff) · PASS
Selank 10mg · lot OC-SK10-102
PassedILS Laboratories · tested 29 May 2026 · certificate COA-2026-UHNP_Y
- Passed: Purity (HPLC) — 99.62% (spec ≥ 95.0%) · PASS
- Net Peptide Content — 10.48 mg
- Passed: Identity (ID) — Confirmed (spec N-acetyl Selank Amidate) · PASS
- Passed: Arsenic (As) — 0.1394 ppm (spec ≤ 1.5 ppm) · PASS
- Passed: Cadmium (Cd) — 0.0534 ppm (spec ≤ 0.5 ppm) · PASS
- Passed: Lead (Pb) — 0.1198 ppm (spec ≤ 1 ppm) · PASS
- Passed: Mercury (Hg) — 0.214 ppm (spec ≤ 1.5 ppm) · PASS
- Passed: Chromium (Cr) — 0.1232 ppm (spec ≤ 10 ppm) · PASS
Payment and shipping
OneDay Compounds ships within the US by 2-day shipping ($14.99), USPS Ground Advantage ($10.95) or overnight ($49.99), and orders placed before 4 PM Mountain ship the same day. Orders of $250 or more after discounts ship free, and a $3.00 package-protection fee is added to each cart.
OneDay's terms state that all sales are final except as its shipping and returns policy provides.
Customer service
OneDay Compounds lists customer service at (801) 332-9742, weekdays 9 AM to 4 PM Mountain, and invites texts to the same number; it can also be reached by email at hello@onedaycompounds.com.
Ratings & reviews
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Frequently Asked Questions
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