NOW Glutathione: A Practical Guide to Forms, Dosage, and Safety

NOW glutathione refers to the glutathione supplements made by NOW Foods, a US-based supplement manufacturer. The most common version is reduced L-glutathione, sold in capsules and liposomal liquids. It is marketed as an antioxidant supplement, not as a medication, and it is not FDA-approved to treat or cure any disease.

What NOW Glutathione Actually Is

NOW Foods sells glutathione under names like reduced L-glutathione and liposomal glutathione. Retail listings sometimes label the same product now l-glutathione or now l glutathione, which can make comparison shopping confusing. All of these names point to the same ingredient: L-glutathione, a small protein-like molecule built from cysteine, glycine, and glutamic acid.

Glutathione is produced in nearly every cell of the human body and acts as a primary antioxidant. Levels tend to fall with age, poor nutrition, chronic stress, and certain health conditions. That decline is the main reason people start looking for a glutathione supplement in the first place.

Forms, Strengths, and What the Label Means

NOW offers more than one delivery format, and those differences usually matter more than the brand name alone.

Product Form	Typical Amount Per Serving	Notes
Reduced L-glutathione capsule	250 mg or 500 mg	Simple daily option; swallow with water
Liposomal glutathione liquid	100 to 500 mg per teaspoon	Fat-wrapped to survive the digestive tract better
Sublingual tablet or lozenge	100 to 250 mg	Held under the tongue before swallowing
Topical cream or serum	Varies by product	Used in skin care routines

Reduced glutathione is the active form the body uses. "Liposomal" means the glutathione is wrapped in tiny fat bubbles that may survive stomach acid better than plain powder. That is the main reason liposomal formulas get so much attention in research summaries.

How Much Glutathione Reaches Your Cells?

Plain oral glutathione has poor bioavailability. Digestive enzymes break down much of it before it reaches the bloodstream, which is why researchers study liposomal and sublingual versions instead.

Delivery Method	How It Is Used	Bioavailability Notes
Oral capsule	Swallowed with water	Low; most is digested before absorption
Liposomal oral	Swallowed as a liquid or gel	Higher in some small studies
Sublingual	Held under the tongue	Moderate; may bypass first-pass digestion
IV glutathione injection	Given by a licensed clinician	Direct to the bloodstream; not FDA-approved for general use
Topical	Applied to the skin	Limited penetration beyond the surface

A glutathione injection delivers the compound straight into the bloodstream, but it requires a licensed provider and carries infection risk when the product or technique is not sterile. Injections also cost far more than capsules.

Benefits People Ask About

The most common reasons people research glutathione are antioxidant support, liver health, and skin appearance.

Antioxidant and Liver Support

Glutathione helps neutralize free radicals and supports detoxification pathways in the liver. Some clinical research uses IV glutathione for certain liver conditions, but evidence for oral glutathione benefits is weaker and mixed. NOW glutathione is not a treatment for liver disease.

Skin

Interest in glutathione for skin comes mainly from its role in melanin production. Some oral and IV studies report reduced skin pigmentation, but results are inconsistent, and effects usually fade once use stops. A topical product or a liposomal formula is often chosen for this goal.

Dosage and Price

Most labels, including NOW's, suggest 250 to 500 mg once or twice daily for reduced glutathione, and roughly one teaspoon daily for liposomal liquid. Follow the product label rather than a random number from a forum, and check with a clinician if you take prescription medication.

The now glutathione price usually falls between $15 and $40 for a 30- to 60-day supply, depending on whether you choose capsules or liposomal liquid. Liquid formulas and larger bottle counts typically cost more per unit.

Safety and Side Effects

Oral glutathione is generally well tolerated. Reported glutathione side effects are mostly mild and include bloating, abdominal cramping, and loose stools.

Inhaled glutathione has been linked to bronchospasm in people with asthma, so inhaled forms should only be used under medical supervision. People who are pregnant, nursing, or receiving chemotherapy or radiation should talk to a healthcare professional before starting any glutathione product, because antioxidants may interact with treatment.

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

How to Choose a NOW Glutathione Product

• Check the form: reduced L-glutathione, liposomal, or sublingual.
• Look for third-party testing seals such as USP, NSF, or Informed Choice.
• Prefer brands that disclose the raw material source, such as Setria.
• Compare cost per serving, not just the bottle price.
• Store capsules in a cool, dry place and refrigerate liquids after opening.

Bottom Line

NOW glutathione is a reduced L-glutathione supplement line from NOW Foods available in capsules and liposomal liquid. It may support antioxidant status, but oral absorption is limited and evidence for dramatic benefits is mixed. Choose the form that matches your goal, follow the label, and check with a healthcare professional before use.

COMMON QUESTIONS

Frequently Asked Questions

Is NOW glutathione the same as L-glutathione?

Yes. NOW Foods sells reduced L-glutathione, which is the same compound people mean when they search for now l-glutathione or l glutathione now. The "L" refers to the natural form of the molecule. Check the label for "reduced L-glutathione" or a branded raw ingredient such as Setria.

How much NOW glutathione should I take daily?

Most labels suggest 250 to 500 mg once or twice daily for capsules, or about one teaspoon daily for liposomal liquid. There is no official FDA daily value for glutathione. Follow the product label and ask a healthcare professional if you take medication or have a health condition.

Does oral glutathione actually work?

Oral glutathione has low bioavailability because digestive enzymes break down much of it before it reaches the bloodstream. Liposomal and sublingual forms may absorb better, but human evidence for large benefits is still mixed. Glutathione is not FDA-approved to treat or cure any disease.