Glutathione (1500mg Vial) Dosage Protocol
Master antioxidant tripeptide (GSH) — injectable use is not FDA-approved; presented for research and educational use.
Concerned about side effects? See Glutathione side effects — what the research documents (honest, sourced, research-use-only).
Looking for results? See Glutathione before and after — what the research actually shows (honest, research-based, no transformation photos).
Pre-filled with this protocol’s recommended BAC water and documented starting dose — edit any field to run your own numbers. Reconstitution math only — not dosing advice. U-100 syringe: 100 units = 1 mL. Full reconstitution guide → · Advanced calculator →Mix & measure Glutathione · 1500 mg
Dosing & Reconstitution Guide
A single practical dilution with twice-to-thrice-weekly dosing, step by step
Standard Approach (7.5 mL = 200 mg/mL)
Reconstitute: Add 7.5 mL bacteriostatic water to one 1500 mg vial → final concentration 200 mg/mL.
Typical range: 100–200 mg per dose, 2–3× weekly, over a 12-week course.
Easy measuring: At 200 mg/mL, 1 unit = 0.01 mL = 2 mg on a U-100 syringe, so units = mg ÷ 2. A 200 mg dose equals 100 units (1.0 mL), a relatively large SC volume.
Storage: Lyophilized: store at −20 °C (−4 °F); after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F) protected from light and do not freeze the mixed solution.
Why Glutathione draws research interest
These are the directions researchers and the peptide community most often explore Glutathione for — so you know you’re in the right place. They describe what is being studied, not proven benefits, approved uses, or promised results.
Skin brightening
Investigated in cosmetic and dermatology research on skin lightening and pigmentation; injectable use is not FDA-approved.
Antioxidant / oxidative stress
Studied as the body's master antioxidant tripeptide for its role in buffering cellular oxidative stress and free radicals.
Liver & detoxification
Explored in research on hepatic detoxification pathways and how cells conjugate and clear reactive compounds.
Immune & cellular redox
Researched for its role in lymphocyte function and intracellular redox balance; injectable use remains investigational.
Evidence ranges from early laboratory work to clinical trials depending on the use — the sections below cover the actual data and sources.
Quickstart Highlights
Glutathione (GSH) is a naturally occurring tripeptide built from glutamate, cysteine, and glycine — the body’s main intracellular thiol antioxidant[1][5]. This educational page outlines a subcutaneous reconstitution and dosing approach for a 1500 mg vial. Injectable glutathione is not FDA-approved for antioxidant, detox, or cosmetic/skin-lightening use, and there is no standardized or approved injectable dose — presented for research and educational use only.
Add 7.5 mL bacteriostatic water to one 1500 mg vial → 200 mg/mL. On a U-100 syringe, 1 unit = 0.01 mL = 2 mg.
100–200 mg subcutaneously, 2–3× weekly, across a 12-week course. There is no approved injectable dose; figures follow the source.
At 200 mg/mL, units = mg ÷ 2: 100 mg = 50 units (0.50 mL) and 200 mg = 100 units (1.0 mL) on a U-100 syringe.
Lyophilized: store at −20 °C (−4 °F); once reconstituted, refrigerate at 2–8 °C (35.6–46.4 °F) protected from light and do not freeze the solution.
Important: Start with the Prep & Injection Guide — it covers the preparation and safety basics every protocol on this site assumes.
Frequency: 2–3 subcutaneous injections per week, not daily. Verify each dose with units = mg ÷ 2 (e.g., 100 mg = 50 units, 200 mg = 100 units)[3][4]. There is no standardized or FDA-approved injectable dose; these figures reflect the source listing, not approved human dosing.
Reconstitution Steps
Draw 7.5 mL of bacteriostatic water into a sterile syringe — one pass with a 10 mL syringe, or three passes with a 3 mL syringe.
Release it slowly down the vial’s inner wall to limit foaming.
Swirl or roll gently until fully dissolved — don’t shake.
Label with the date and concentration, then refrigerate at 2–8 °C (35.6–46.4 °F), shielded from light.
The 7.5 mL dilution gives a clean 200 mg/mL, so every dose reads as a whole number of units (units = mg ÷ 2). Note that a 200 mg dose is 1.0 mL — a relatively large subcutaneous volume. Avoid freezing the reconstituted solution and keep it protected from light.
Supplies Needed
Quantities below assume a 12-week course of subcutaneous injections at 2–3 times per week.
At 200 mg per dose, 2–3 doses weekly, one 1500 mg vial covers roughly 7 doses (about 2–3 weeks).
- 8 weeks (2×/wk): ~3 vials
- 12 weeks (2×/wk): ~4 vials
- 12 weeks (3×/wk): ~6 vials
- Per injection: 1 syringe
- 12 weeks (2×/wk): ~24 syringes
- 12 weeks (3×/wk): ~36 syringes
Use 7.5 mL per 1500 mg vial for reconstitution.
- 12 weeks (~4 vials): ~30 mL → 3 bottles
- 12 weeks (~6 vials): ~45 mL → 5 bottles
One for the vial stopper + one for the injection site each session.
- Per injection: 2 swabs
- 12 weeks (2–3×/wk): ~48–72 swabs → 1 box
Protocol Overview
A concise summary of the twice-to-thrice-weekly regimen, drawn from the source listing.
- ▪Goal: Supplement the body’s main intracellular antioxidant (GSH) — injectable use is not FDA-approved and proven antioxidant, detox, or skin-lightening benefits are not established[5][6].
- ▪Schedule: Subcutaneous injections 2–3 times weekly across a 12-week course.
- ▪Dose Range: 100 mg (weeks 1–2) then 200 mg (weeks 3–12) per dose; units = mg ÷ 2.
- ▪Reconstitution: 7.5 mL bacteriostatic water per 1500 mg vial gives 200 mg/mL (1 unit = 2 mg).
- ▪Storage: Keep the dry vial frozen at −20 °C (−4 °F); once mixed, refrigerate at 2–8 °C protected from light and do not freeze the solution.
Dosing Protocol
A suggested approach based on the figures the source lists; there is no approved injectable dose.
- ▪Start: Begin at 100 mg per dose (50 units, 0.50 mL) during weeks 1–2 to gauge tolerability.
- ▪Titrate: Move to 200 mg per dose (100 units, 1.0 mL) from week 3 onward as tolerated.
- ▪Target: Maintain 200 mg per dose, 2–3× weekly, through weeks 3–12.
- ▪Cycle Length: Typically a 12-week course.
- ▪Timing: Inject on consistent days each week and rotate injection sites systematically.
Storage Instructions
Correct storage is what preserves the peptide’s stability and activity.
- ▪Lyophilized: Hold the dry vial at −20 °C (−4 °F) in dry, dark conditions and limit moisture exposure[7].
- ▪Reconstituted: Refrigerate at 2–8 °C (35.6–46.4 °F) protected from light and use within about 28 days; do not freeze the mixed solution, as freezing can denature peptides[8].
- ▪Handling: Let frozen vials warm to room temperature before opening so condensation won’t form, and keep the solution clear of heat and direct light.
- ▪Freeze–thaw: Avoid repeated freeze–thaw cycles of the reconstituted solution.
Important Notes
Practical points that keep each injection session safe and consistent.
- ▪Sterile technique: Use a fresh sterile U-100 insulin syringe each time and drop it straight into a puncture-proof sharps container afterward.
- ▪Site rotation: Move between abdomen, thighs and upper arms to reduce local irritation and lipohypertrophy[9].
- ▪Slow injection: Push the plunger slowly and pause a few seconds before withdrawing the needle to prevent backflow.
- ▪Recordkeeping: Log each dose, injection site and any observations to keep the protocol consistent.
- ▪Regulatory note: Injectable glutathione is not FDA-approved; the FDA issued a 2019 warning against compounded glutathione injectables over contamination and adverse-event risk, and IV glutathione for skin whitening is not approved by any route[10].
How This Works
Glutathione (GSH) is a tripeptide made of glutamate (glutamic acid), cysteine, and glycine[1][2]. The reactive thiol (−SH) group on its cysteine residue carries its antioxidant activity.
As the body’s main intracellular thiol antioxidant, glutathione neutralizes reactive oxygen species and participates in cellular detoxification pathways (for example as a cofactor for glutathione peroxidase and in conjugation reactions)[5][6].
Glutathione is widely studied in cell and laboratory work, but oral glutathione has poor bioavailability, and the value of injectable glutathione for raising tissue levels or producing clinical benefits is not well established[11][12].
Important caveat: claims that injectable glutathione provides proven skin-lightening, detox, or anti-aging benefits are not supported by adequate evidence. The FDA does not approve glutathione injectables for these uses, and the 2019 FDA warning flagged real safety concerns including contamination and allergic reactions. Such claims should be read as unproven.
Injectable glutathione is not an FDA-approved medicine for antioxidant, detox, or cosmetic use. It is presented here for research and educational purposes only.
Lifestyle Factors
Habits that support healthy oxidative balance alongside the protocol.
- ▪Nutrition: A diet rich in fruits, vegetables, and sulfur-containing foods supports the body’s own glutathione synthesis.
- ▪Activity & rest: Regular moderate exercise supports antioxidant defenses; balance it with adequate recovery.
- ▪Sleep: Aim for 7–9 hours to support the body’s natural redox and repair processes.
- ▪Stress: Manage stress and limit alcohol and smoking, which deplete glutathione and raise oxidative load.
Potential Benefits & Side Effects
What the literature discusses; clinical evidence for injectable glutathione is limited and individual results vary.
Potential Benefits
- ▪Antioxidant role (established biochemistry): Glutathione is the body’s main intracellular antioxidant and neutralizes reactive oxygen species[5][6].
- ▪Detox pathways (biochemistry): Glutathione participates in conjugation and detoxification reactions in the liver; whether injectable dosing meaningfully boosts this is not established[11].
- ▪Skin-lightening claims (unproven): Marketed for skin whitening, but IV/injectable glutathione is not FDA-approved for this and evidence is weak.
- ▪Note on humans: Clinical benefits of injectable glutathione are not established, and there is no approved injectable dose[13].
Common Side Effects
- ▪Injection-site reactions: Mild redness, tenderness or soreness can occur; rotating sites helps. The 1.0 mL volume may sting.
- ▪Allergic & contamination risk: The 2019 FDA warning cited allergic reactions and contamination from compounded glutathione injectables; caution is advised.
- ▪Not FDA-approved: Injectable glutathione is not approved for antioxidant, detox, or cosmetic use, and long-term injectable safety data are limited.
Injection Technique
General subcutaneous technique, following established clinical best-practice guidance[14][15].
Pre-Injection Preparation
- ▪Wash your hands well with soap and water.
- ▪Wipe the vial stopper with an alcohol swab and let it air-dry.
- ▪Choose a site (abdomen, thigh, or upper arm) and clean it with a fresh alcohol swab, letting it dry fully[15].
- ▪Draw the intended dose, then check for air bubbles and push any out.
Injection Procedure
- ▪Pinch a skinfold at the chosen site between thumb and forefinger.
- ▪Insert the needle into the pinch at a 45–90-degree angle (use 45 degrees if the fat layer is thin)[14].
- ▪Skip aspiration for subcutaneous shots — it isn’t needed[14].
- ▪Press the plunger slowly and steadily until it’s fully down.
- ▪Wait 5–10 seconds, then pull the needle straight out to prevent leakage.
Post-Injection Care
- ▪Drop the used syringe straight into a puncture-proof sharps container — never recap a needle.
- ▪Return the reconstituted vial to the fridge right away.
- ▪Rotate the injection site each session to prevent irritation and lipohypertrophy[9].
- ▪Watch the site for excess redness, swelling, or signs of infection.
Recommended Source
For high-purity research peptides, we point researchers to Prime Lab Peptides.
Why Prime Lab Peptides?
- ▪Top-rated on Trustpilot: Independently reviewed as the highest-rated peptide lab on Trustpilot — making it the best current source in the USA.
- ▪Third-party tested: Every batch ships with a Certificate of Analysis (COA) confirming purity and composition.
- ▪Consistent quality: ISO-aligned manufacturing and handling keep product integrity reliable batch to batch.
- ▪Cold-chain integrity: Temperature-controlled shipping and storage across the whole fulfilment chain.
- ▪Research-grade purity: Fit for educational and research use that demands high-quality peptides.
Note: Product availability and specifications subject to change. Verify current product details on supplier website.
References
- 1
PubChem / NCBIGlutathione (GSH): structure of the tripeptide of glutamate, cysteine, and glycine, and its biological roles.
- 2
Biochimica et Biophysica Acta (PubMed)Glutathione: synthesis from glutamate, cysteine and glycine, and its role in cellular redox homeostasis.
- 3
U.S. Food & Drug AdministrationFDA alerts on compounded sterile drugs and unapproved injectables; injectable glutathione is not FDA-approved.
- 4
FDA Consumer Warning (2019)FDA warning on compounded glutathione injectables over contamination and adverse-event risk; skin-whitening use not approved.
- 5
Antioxidants (Basel) (PubMed)Glutathione as the principal intracellular thiol antioxidant in oxidative-stress defense.
- 6
Free Radical Biology & Medicine (PubMed)Glutathione in detoxification and as a cofactor for glutathione peroxidase and conjugation reactions.
- 7
Peptide Storage GuideBest practices for storing lyophilized peptides (temperature, humidity and light protection).
- 8
Bacteriostatic Water GuidanceBacteriostatic water for injection: multi-dose vial stability and handling.
- 9
NCBI BookshelfBest practices for subcutaneous injection: aseptic technique and site rotation.
- 10
FDA Drug Safety CommunicationIV/injectable glutathione for skin whitening is not approved by any route in the United States.
- 11
Biochemical Pharmacology (PubMed)Glutathione in hepatic detoxification and conjugation; limited bioavailability of oral and injectable forms.
- 12
European Journal of Nutrition (PubMed)Bioavailability of supplemental glutathione and effects on body stores.
- 13
ClinicalTrials.govTrial registry for glutathione; injectable glutathione has no approved indication for antioxidant, detox, or cosmetic use.
- 14
Centers for Disease Control and Prevention (CDC)Subcutaneous injection technique: angle, site and no-aspiration guidance.
- 15
Subcutaneous Injection Technique (Patient Education)How to administer a subcutaneous injection: clinical technique guidelines.
- 16
Prime Lab PeptidesResearch-grade peptides supplier — purity specifications and certificates of analysis.
Glutathione — frequently asked questions
How do I reconstitute a 1500 mg vial of Glutathione?
Wipe the stopper with an alcohol swab, then inject your bacteriostatic water slowly down the inside wall of the vial. Let it sit and gently swirl until dissolved — never shake. Store the mixed vial in the refrigerator and draw doses with an insulin syringe. Use the calculator above to turn any dose into syringe units.
How much bacteriostatic water should I add to Glutathione?
There is no single correct amount — more water simply spreads the same 1500 mg of peptide across a larger volume, which makes small doses easier to measure accurately. 1 to 3 mL per vial is typical. Enter your chosen volume in the calculator above to see the resulting concentration and syringe units.
What do the "units" on an insulin syringe mean?
On a U-100 insulin syringe, 100 units equal 1 mL, so 1 unit equals 0.01 mL. The calculator above converts your draw volume into these units automatically so you can measure without doing the math by hand.
How should I store Glutathione after mixing?
Keep the reconstituted vial refrigerated at roughly 2 to 8 degrees Celsius, away from light, and avoid freezing it. Reconstituted research peptides are generally used within a few weeks. Always follow the specific guidance supplied with your product.
How many doses does a 1500 mg vial of Glutathione provide?
Divide the vial strength of 1500 mg by the amount you use per injection. The calculator above reports this as "doses per vial" the moment you enter a dose.
Is Glutathione approved for human use?
No. Glutathione is sold strictly for laboratory and research purposes and is not approved by the FDA or other regulators for human use. Everything on this page is research information, not medical advice — consult a licensed healthcare professional before any use.
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