What is the difference between Foxo4-DRI and Glutathione?

Foxo4-DRI: D-retro-inverso peptide that disrupts Foxo4/p53 interaction in senescent cells; restores p53-mediated apoptosis selectively in senescent cells; clears cellular "zombie cells" Glutathione: Master endogenous antioxidant tripeptide; neutralizes ROS, regenerates vitamins C and E, supports phase II liver detoxification, maintains intracellular redox balance

Is Foxo4-DRI FDA approved?

Foxo4-DRI is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

Is Glutathione FDA approved?

Glutathione is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

How is Foxo4-DRI administered in research settings?

In research settings, Foxo4-DRI is typically administered via the intravenous or subcutaneous routes. PeptideBase does not provide dosing or administration instructions.

How is Glutathione administered in research settings?

In research settings, Glutathione is typically administered via the intravenous, subcutaneous, oral (liposomal), nebulized, or oral routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Foxo4-DRI vs Glutathione

Peptide Comparison

Foxo4-DRI vs Glutathione

Name: Foxo4-DRI vs Glutathione — Per-mg Price Comparison
Creator: PeptideBase
License: https://peptidebase.io/terms

Both are Longevity & Cellular peptides.

Foxo4-DRI

Foxo4-D-Retro-Inverso

LongevityNot EvaluatedResearch Only

Half-life: Unknown

14 providers listed

Full Foxo4-DRI profile →

Glutathione

gamma-glutamylcysteinylglycine

RecoveryNot EvaluatedCompoundable

Half-life: Variable (~2-5 minutes IV; hours liposomal)

136 providers listed

Full Glutathione profile →

Bottom line

Glutathione carries stronger published evidence (RCT, 1 key studies) than Foxo4-DRI (Review, 3); both are research compounds.

Quick Verdict

Foxo4-DRI

Half-life

Unknown

Glutathione

Half-life

Variable (~2-5 minutes IV; hours liposomal)

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Glutathione
Oral administration option	Glutathione
Lower typical price per mg	Glutathione
More provider options (14 vs 136)	Glutathione

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Foxo4-DRI

Glutathione

Mechanism Family

Longevity & Cellular

Half-life

Unknown

Variable (~2-5 minutes IV; hours liposomal)

FDA Status

not evaluated

Admin Routes

intravenous, subcutaneous

intravenous, subcutaneous, oral (liposomal), nebulized, oral

Availability

Research Only

Compoundable

Providers

14 listed

136 listed

Avail. Notes

Senolytic D-retro-inverso Foxo4 peptide (de Keizer lab, Netherlands). Eliminates p21-positive senescent cells. No FDA approval, no IND or NDA. Novel research compound only.

On FDA 503A Category 1 bulk drug substances list for injectable/IV compounding. Also sold as dietary supplement. Not FDA-approved as standalone drug. Compoundable by licensed 503A pharmacies.

Research Evidence

Foxo4-DRI

Review · 3 key studies · most recent 2026

Glutathione

RCT · 1 key study · dated evidence base — most recent 2009

Research Citations

Foxo4-DRI

Animal2021 · EBioMedicine

Rational design of a peptide inducing selective apoptosis of p53-high senescent cells by targeting the FOXO4-…

Animal2017 · Cell

Targeted Apoptosis of Senescent Cells Restores Tissue Homeostasis in Response to Chemotoxicity and Aging

Review2026 · Naunyn Schmiedebergs Arch Pharmacol

Targeting the FOXO4-p53 axis by retro-inverso peptide senolytic agents: a pharmacological strategy to mitigat…

Glutathione

RCT2009 · Movement Disorders

Randomized, double-blind, pilot evaluation of intravenous glutathione in Parkinson's disease

About Foxo4-DRI

D-retro-inverso peptide that disrupts Foxo4/p53 interaction in senescent cells; restores p53-mediated apoptosis selectively in senescent cells; clears cellular "zombie cells"

Research Areas

senescent cell clearancetissue rejuvenationhealthspan extensionsenolytic

About Glutathione

Master endogenous antioxidant tripeptide; neutralizes ROS, regenerates vitamins C and E, supports phase II liver detoxification, maintains intracellular redox balance

Research Areas

intracellular redox homeostasis and ROS scavengingIV administration bypasses oral bioavailability failure — acute plasma GSH elevationmelanin synthesis modulation studied for skin pigmentation (mixed evidence)glutathione peroxidase substrate — core detoxification pathway cofactor

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Foxo4-DRI

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Glutathione

Reported (Unverified — Pending Clinical Review)

asthma (nebulized form)

No established clinical contraindications

Price (per mg)

Foxo4-DRI

$22.00/mg

$10.23 – $24.50 range

17 vendors

View price index →Find providers →

Glutathione

$0.04/mg

$0.03 – $0.09 range

10 vendors

View price index →Find providers →

Find Providers

Where to source these peptides

Providers offering

Foxo4-DRI

14 listed

Browse directory →

Providers offering

Glutathione

136 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More Longevity & Cellular Comparisons

Browse all peptides →

Educational research tools — not medical advice.

Cite this page

Data last updated August 26, 2026

Free to reference and republish with attribution to PeptideBase. Choose a format:

PeptideBase. (2026). Foxo4-DRI vs Glutathione — Per-mg Price Comparison. Retrieved September 11, 2026, from https://peptidebase.io/peptides/compare/foxo4-dri/glutathione

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