Glutathione Dosage: How Much Per Day by Form

Glutathione dosage depends on the form you take and the reason you are taking it. Most oral supplements are sold in 250 mg to 1,000 mg capsules taken once or twice a day, while liposomal and sublingual products are commonly dosed at 500 mg to 1,000 mg daily. Injectable and IV glutathione is given in clinical settings, usually 600 mg to 2,400 mg per session.

There is no official glutathione dose approved for general use in the United States, so the amounts below come from product labels, published studies, and clinic protocols rather than a government standard. That is why you will see the same supplement sold with very different instructions.

Glutathione Dosage by Form

Form	Common dose range	Typical frequency	Notes
Oral (reduced L-glutathione)	250–1,000 mg	1–2 times daily	Lowest cost; absorption is limited
Liposomal glutathione	500–1,000 mg	Once daily	Fat-encapsulated to survive digestion
Sublingual or lozenge	100–500 mg	1–2 times daily	Held under the tongue; limited independent data
Intramuscular injection	200–600 mg	2–3 times weekly	Given by a licensed provider
IV infusion	600–2,400 mg	Weekly to several times weekly	Offered in some dermatology and wellness clinics

Those ranges overlap because no consensus standard exists. A dose that works well for one person may be too low, or needlessly high, for someone else.

Oral Glutathione Dosage Per Day

Most oral labels suggest 250 mg to 500 mg once or twice daily, which puts a typical daily total between 500 mg and 1,000 mg. That is also the range used in the majority of human studies, which usually run 4 to 12 weeks.

Reduced L-Glutathione

"Reduced" means the active, unoxidized form of the molecule, and it is what most capsules contain. A common glutathione reduced dosage is 500 mg per day, though some researchers use 1,000 mg split into two doses.

Liposomal and Sublingual Forms

Liposomal products wrap glutathione in fat bubbles to help it survive stomach acid, and labels usually recommend 500 mg to 1,000 mg once daily. Sublingual tablets are dosed lower, often 100 mg to 500 mg, on the theory that tissue under the tongue absorbs the compound before it reaches the digestive tract.

Glutathione Injection Dosage and IV Protocols

Injectable glutathione is not FDA-approved for general human use, so dosing comes from clinic protocols instead of a drug label. A common glutathione injection dosage is 200 mg to 600 mg given intramuscularly two or three times per week, while IV infusions often range from 600 mg to 2,400 mg per session.

These treatments must be given by a licensed medical professional. High-dose IV glutathione has been linked to rare but serious reactions, including breathing difficulty and at least one documented case of severe liver toxicity.

What the Research Says About How Much Glutathione Per Day

Oral glutathione has poor bioavailability. Most of it breaks down in the gut, so only a small fraction reaches the bloodstream intact.

• Studies in healthy adults often use 500 mg to 1,000 mg daily for 4 to 12 weeks and track markers such as oxidative stress or skin melanin.
• Some trials use 1,500 mg glutathione per day, often labeled as l glutathione 1500mg, but higher oral doses do not reliably raise blood levels.
• Topical and inhaled glutathione appear in some protocols, though dosing for those routes is far less standardized.

The practical takeaway is that swallowing more milligrams does not automatically produce a bigger effect.

Dosing Factors and Safety Notes

What Changes Your Dose

1. Form and absorption. Liposomal and sublingual products are usually dosed differently than plain capsules.
2. Your goal. General antioxidant support, skin-related use, and liver support protocols often rely on different amounts.
3. Body weight and health status. A provider may adjust injectable doses based on weight, liver function, or medication use.
4. Other supplements. Vitamin C, NAC, and alpha-lipoic acid are sometimes combined with glutathione, which changes the overall regimen.

Side Effects to Watch

Oral glutathione is generally well tolerated at typical doses. Reported side effects are usually mild and include bloating, cramping, and loose stools.

Injection and IV routes carry more risk because they bypass digestion and deliver a much larger amount at once. Because these products are not approved for general use, the safest approach is to work with a clinician who can review your history and monitor your response.

Glutathione is not a treatment or cure for any disease, and it should never replace prescribed medical care.

Talk with a healthcare professional before starting glutathione, especially if you are pregnant, breastfeeding, taking prescription medication, or managing a chronic condition.

Comparing Glutathione With Other Peptide Protocols

Glutathione is often discussed alongside other injectable compounds, but the dosing logic does not carry over from one molecule to another. A bpc-157 dosage chart by weight, for instance, tells you nothing about glutathione, because the two compounds behave very differently in the body.

People researching recovery protocols sometimes review bpc-157 and tb-500 dosage for injury next to metabolic agents, and an aod 9604 dosage protocol follows its own separate schedule. Match the dose to the specific compound and to guidance from a qualified provider.

COMMON QUESTIONS

Frequently Asked Questions

How much glutathione should I take per day?

For oral supplements, most labels and studies land between 500 mg and 1,000 mg per day, often split into one or two doses. Injectable and IV amounts are much higher and are given by a clinician. There is no FDA-approved daily dose for general use, so a healthcare provider is the best source of guidance for your situation.

Is 1,500 mg of glutathione per day safe?

Doses of 1,500 mg per day appear in some studies and on supplement labels, and oral glutathione is generally well tolerated at that level. However, higher oral doses do not reliably raise glutathione levels in the blood, so the extra milligrams may not add much benefit. Check with a healthcare professional before using high doses long term.

Does oral glutathione actually get absorbed?

Only a small percentage of swallowed glutathione survives digestion and reaches the bloodstream intact. Liposomal and sublingual forms are designed to improve absorption, but head-to-head research comparing them is limited. Because of this, some people instead use precursors such as NAC or vitamin C to support glutathione levels.