Which vendors sell FOXO4-DRI with independent COA testing?

10 vendors in the Merit Verified directory have independent COA evidence on file for FOXO4-DRI — 22 COAs total. COA coverage and test dates are listed on the FOXO4-DRI page at https://meritverified.org/peptides/foxo4-dri.

How do I verify the quality of FOXO4-DRI from a vendor?

To verify FOXO4-DRI quality, look for an independent certificate of analysis (COA) from a third-party lab — not a lab the vendor owns or pays directly. The COA should state the tested compound, lot number, purity percentage (identity and concentration), and the lab's name. Cross-reference the lot number against the vendor's current stock. Merit Verified indexes COAs for FOXO4-DRI at https://meritverified.org/peptides/foxo4-dri so you can compare evidence across vendors before buying.

What is the regulatory status of FOXO4-DRI?

FOXO4-DRI is tracked in the Merit Verified registry. Regulatory status for research peptides in the US has been evolving — the FDA has reclassified a number of peptides out of the 503A compounding ingredient list since 2025. Merit Verified does not provide legal or regulatory advice; check official FDA sources or consult a licensed professional for the current status of FOXO4-DRI in your jurisdiction.

Nootropic / Cognitive

FOXO4-DRI

Also known as: FOXO4-D-Retro-Inverso

FOXO4-DRI is a D-retro-inverso peptide designed to disrupt the FOXO4-p53 interaction in senescent cells. It is studied as a senolytic agent that selectively induces apoptosis in senescent cells while sparing normal cells.

Where to buy · live market data

Who's worth your money for FOXO4-DRI

Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.

Top Merit pick

🇺🇸 Glacier Aminos 99

Highest Merit Score (99) of 10 scored sellers

$13.50/mg

$135 · 10mg · 99.9% purity

1 COA

Buy code MERIT · 10% off

Best value

🇺🇸 AMC Essentials 31

Lowest $/mg among scored sellers

$10.00/mg

$99.99 · 10mg

no COAs yet

Buy affiliate

Most tested

🇺🇸 BioLongevity Labs 96

3 independent COAs on file

$27.50/mg

$275 · 10mg · 99.8% purity

3 COAs

Buy code MERIT · 15% off

Average price

$19.43/mg

range $6.40–$50.00/mg

Sellers

from $75.00

45-day trend

-0.9%

vs 45-day avg $/mg

35 of 39 sellers have a current price· 18 stale hidden· 7 unverified hidden

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Glacier Aminos ✓ verified at source · just now	$135· 10mg	$13.50/mg	-30.5%	99.9%	1	99	Buy code MERIT · 10% off
🇺🇸	BioLongevity Labs ✓ verified at source · just now	$275· 10mg	$27.50/mg	+41.5%	99.8%	3	96	Buy code MERIT · 15% off
🇺🇸	Ion Peptide ✓ verified at source · just now	$119· 10mg	$11.90/mg	-38.8%	100.0%	1	95	Buy
🇺🇸	Licensed Peptides ✓ verified at source · just now	$200· 10mg	$20.00/mg	+2.9%	—	—	95	Buy code MERIT · 5% off
🇺🇸	Peptide Crafters ✓ verified at source · just now	$135· 12mg	$11.25/mg	-42.1%	—	—	94	Buy code CRAFTERS10 · 10% off
🇺🇸	Polaris Peptides ✓ verified at source · just now	$250· 10mg	$25.00/mg	+28.7%	—	—	90	Buy
🇺🇸	Ruo Bio ✓ verified at source · just now	$100· 10mg	$10.00/mg	-48.5%	—	—	88	Buy
🇺🇸	Verified Peptides ✓ verified at source · just now	$132· 10mg	$13.20/mg	-32.1%	99.7%	3	87	Buy
🇺🇸	MedGe Peptides ✓ verified at source · just now	$450· 15mg	$30.00/mg	+54.4%	—	—	82	Buy affiliate
🇺🇸	AMC Essentials ✓ verified at source · just now	$99.99· 10mg	$10.00/mg	-48.5%	—	—	31	Buy affiliate

Top Merit pick

🇺🇸 Glacier Aminos
✓ verified at source · just now
99

$13.50/mg -30.5% vs avg

$135

10mg

99.9% purity 1 COA

Buy code MERIT · 10% off
🇺🇸 BioLongevity Labs
✓ verified at source · just now
96

$27.50/mg +41.5% vs avg

$275

10mg

99.8% purity 3 COAs

Buy code MERIT · 15% off
🇺🇸 Ion Peptide
✓ verified at source · just now
95

$11.90/mg -38.8% vs avg

$119

10mg

100.0% purity 1 COA

Buy
🇺🇸 Licensed Peptides
✓ verified at source · just now
95

$20.00/mg +2.9% vs avg

$200

10mg

no purity

Buy code MERIT · 5% off
🇺🇸 Peptide Crafters
✓ verified at source · just now
94

$11.25/mg -42.1% vs avg

$135

12mg

no purity

Buy code CRAFTERS10 · 10% off
🇺🇸 Polaris Peptides
✓ verified at source · just now
90

$25.00/mg +28.7% vs avg

$250

10mg

no purity

Buy
🇺🇸 Ruo Bio
✓ verified at source · just now
88

$10.00/mg -48.5% vs avg

$100

10mg

no purity

Buy
🇺🇸 Verified Peptides
✓ verified at source · just now
87

$13.20/mg -32.1% vs avg

$132

10mg

99.7% purity 3 COAs

Buy
🇺🇸 MedGe Peptides
✓ verified at source · just now
82

$30.00/mg +54.4% vs avg

$450

15mg

no purity

Buy affiliate
🇺🇸 AMC Essentials
✓ verified at source · just now
31

$10.00/mg -48.5% vs avg

$99.99

10mg

no purity

Buy affiliate

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

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Compound reference

About FOXO4-DRI

CAS

2460055-10-9

Molecular formula

C228H388N86O64

Sequence

LTLRKEPASEIAQSILEAYSQNGWANRRSGGKRPPPRRRQRRKKRG

Typical dose range

1 mg subcutaneous, repeated on alternating days (e.g. days 1, 3, 5) per cycle; original mouse research used 5 mg/kg × 3 doses

Half-life

~2–6 hours (estimated preclinical; no human PK data available)

Independent evidence

COAs for FOXO4-DRI

22 third-party tests across 10 vendors. Each card links to the full report.

All 22 COAs for FOXO4-DRI →

Measured purity over time

FOXO4-DRI

Who's worth your money for FOXO4-DRI

Watch FOXO4-DRI

About FOXO4-DRI

COAs for FOXO4-DRI

12 citations indexed for FOXO4-DRI

Targeting the FOXO4-p53 axis by retro-inverso peptide senolytic agents: a pharmacological strategy to mitigate brain aging and cognitive decline

FOXO4 as a Redox-Sensitive Regulator of Antioxidant Defense and Cellular Senescence: Cysteine-Based Signaling, p53 Interaction, and Therapeutic Targeting

Acylglycerol Kinase Sensitizes Glioblastoma to Temozolomide via Limiting Mitochondrial Damage Related Cellular Senescence

The right time, the right cell: the potential for precision senotherapy in pulmonary arterial hypertension

FOXO4-DRI regulates endothelial cell senescence via the P53 signaling pathway

The disordered p53 transactivation domain is the target of FOXO4 and the senolytic compound FOXO4-DRI