Glutathione 600mg Dosage & Mixing Guide

What is Glutathione?

Glutathione (GSH, glutation, Glutathion) is the endogenous tripeptide gamma-Glu-Cys-Gly — the cell’s principal thiol antioxidant, present in nearly every tissue at millimolar concentrations. It is not a designer research peptide; it is a molecule the body already makes and recycles continuously, which is why the injectable form is sold in gram-scale rather than milligram-scale vials.

The 600mg presentation sits at the low end of that range. It pairs conceptually with NAD+ in redox and cellular-energy research, since the glutathione recycling loop is NADPH-dependent, and it is often catalogued alongside Epithalon and SS-31 in longevity-oriented collections.

A note on units before anything else. A 600mg vial carries roughly 100 times the mass of a typical research peptide vial. The “mcg per insulin unit” framing used across the rest of this catalogue is simply the wrong instrument here — at any sane reconstitution volume, one insulin unit holds around a milligram, and a single research dose consumes an entire U-100 syringe or several of them. Work in mg/mL and mL, and use a 3mL or 5mL Luer-lock syringe rather than an insulin syringe.

Reconstitution

Glutathione reconstitutes with bacteriostatic water. Draw 6mL down the inside wall of the vial in two or three portions, swirling gently between additions until the powder is fully dissolved, then refrigerate. Do not shake. Lyophilised glutathione is bulky at this mass — expect it to take longer to dissolve than a 5mg peptide, and check the vial has headspace for 6mL before you commit.

The reconstituted solution is a thiol in water and will slowly oxidise to the disulphide (GSSG). Keep it cold, keep it dark, and keep air contact minimal.

Quick Reference

Reconstitution Guide

Materials Needed

• Glutathione 600mg lyophilized vial
• Bacteriostatic water (BAC water) — a 10mL or 30mL vial, since 6mL is more than most single BAC vials hold
• 3mL or 5mL Luer-lock syringes with drawing needles
• Alcohol swabs
• Sharps container

Step-by-Step Instructions

1. Prepare workspace — Clean environment, gather materials, thorough handwashing.
2. Clean vial stoppers — Wipe both vials with alcohol swabs. Allow complete drying.
3. Check headspace — Confirm the vial can accept 6mL on top of the powder bed before you start.
4. Draw BAC water — Draw 6mL bacteriostatic water, in two or three syringe loads if needed.
5. Add to peptide — Inject slowly down the inside wall of the vial. Do not spray directly onto the powder.
6. Dissolve — Allow several minutes and gentle swirling between additions. No shaking, no vortexing.
7. Verify — Solution should be clear and colourless to very faintly straw-coloured. Discard if cloudy or if particles persist.
8. Label and store — Note reconstitution date. Refrigerate immediately, protected from light.

Dosage Protocol

Concentration Calculations

With 600mg peptide in 6mL BAC water:

• Concentration: 600mg / 6mL = 100mg/mL (100,000mcg/mL)
• Per unit (U-100 syringe): 100mg/mL x 1000 / 100 = 1000mcg per unit — that is a full milligram in a single tick mark

That last line is the whole problem in one number. A 100mg research dose is 100 units, which is the entire barrel of a 1mL insulin syringe; a 300mg dose is three complete syringes. Insulin-unit arithmetic technically works, but it is a needlessly fragile way to measure a volume you can simply read off a 3mL syringe. Read mL.

If you prefer a smaller total volume, 3mL of BAC water gives 200mg/mL and halves every draw volume below — at the cost of a thicker solution that takes longer to go into solution.

Run your exact vial and water combination through the peptide reconstitution calculator to rebuild this table for your setup.

Common Dose Calculations

At 100mg/mL:

At 100mg per administration the vial yields 6 doses; at 200mg it yields 3.

Research Considerations

Mechanism

Glutathione’s reactive group is the cysteine thiol. It serves as the reducing cofactor for the glutathione peroxidases, which clear hydrogen peroxide and lipid hydroperoxides, and as the conjugating substrate for the glutathione S-transferases in phase II detoxification. Oxidised glutathione (GSSG) is reduced back to GSH by glutathione reductase using NADPH, so the GSH/GSSG ratio is a standard readout of cellular redox state.

An honest caveat that most vendor copy skips: exogenously administered glutathione is largely cleaved outside the cell by gamma-glutamyl transpeptidase, and cells then resynthesise their own GSH from the released amino acids. The human pharmacokinetic study by Aebi and colleagues found that after a 2g/m² intravenous dose, plasma cysteine rose more than tenfold and urinary glutathione excretion rose roughly 300-fold within 90 minutes. In other words, parenteral glutathione behaves in large part as a cysteine delivery vehicle rather than as intact intracellular glutathione.

Human evidence by application:

• Pharmacokinetics — established. Plasma half-life of exogenous IV glutathione measured at 14.1 +/- 9.2 minutes in 10 healthy volunteers.
• Neurology — a randomised, double-blind pilot in Parkinson’s disease used 1400mg IV three times weekly for four weeks. It was well tolerated; it did not demonstrate a significant efficacy signal over placebo. A later intranasal Phase IIb likewise found no separation from placebo.
• Dermatology / melanin index — the systematic review evidence is strongest for oral glutathione at 250-500mg daily. The intravenous literature is thin, resting on very few controlled studies with acknowledged design problems.
• Skeletal, metabolic and performance claims — largely preclinical or mechanistic. Treat as hypothesis-generating.

Melanogenesis interest comes from tyrosinase inhibition via copper chelation and a shift in the eumelanin/pheomelanin balance, which is a plausible mechanism regardless of how the clinical evidence eventually settles.

Sourcing for Research

Source from verified suppliers that provide third-party testing and certificates of analysis (COA) for each batch. For glutathione specifically, ask what fraction of the assayed mass is reduced GSH rather than oxidised GSSG — a COA reporting only “glutathione” tells you less than one that separates the two. Compare purity documentation, shipping conditions, and batch traceability before purchasing research materials.

Storage Requirements

Lyophilized (Powder)

• Temperature: -20°C or colder
• Duration: 2+ years
• Conditions: Dry, dark, protected from moisture

Reconstituted

• Temperature: 2-8°C (refrigerated)
• Duration: 2-4 weeks
• Conditions: Protected from light, never freeze, minimise headspace air

Safety Considerations

• Glutathione is a research compound
• Not approved for any indication in any jurisdiction
• Research use only — not for human consumption
• Use sterile technique; never reuse needles or syringes

Scientific References

1. Aebi S, Assereto R, Lauterburg BH. High-dose intravenous glutathione in man. Pharmacokinetics and effects on cyst(e)ine in plasma and urine. Eur J Clin Invest. 1991;21(1):103-110.
2. Hauser RA, Lyons KE, McClain T, Carter S, Perlmutter D. Randomized, double-blind, pilot evaluation of intravenous glutathione in Parkinson’s disease. Mov Disord. 2009;24(7):979-983.
3. Mischley LK, Lau RC, Shankland EG, Wilbur TK, Padowski JM. Phase IIb study of intranasal glutathione in Parkinson’s disease. J Parkinsons Dis. 2017;7(2):289-299.
4. Sarkar R, et al. Glutathione as a skin-lightening agent and in melasma: a systematic review. Int J Dermatol. 2025.
5. Wendel A, Cikryt P. The level and half-life of glutathione in human plasma. FEBS Lett. 1980;120(2):209-211.

Last updated: 2026-07-21.

Disclaimer: This information is for educational and research purposes only. Glutathione is a research compound and is not approved for any use. Research-grade peptides are not intended for human consumption. Always follow applicable laws and institutional guidelines.