Glutathione, Liposomal

Glutathione is a small molecule your body makes and stores naturally in its cells, built from three amino acids: cysteine, glycine and glutamic acid.

Liposomal glutathione is glutathione wrapped in a protective layer of lipids (the same kind of fatty molecules your cells are built from), forming tiny spheres called liposomes.

Glutathione is notoriously difficult to absorb from an ordinary supplement, because much of it is broken down in the digestive tract before your body can take it up. The liposome is designed to shield the glutathione on that journey, so more of it survives digestion and reaches the bloodstream.

And this isn't just theory. In a human trial on our own liposomal glutathione, peak blood levels reached nearly four times higher than standard, non-liposomal glutathione at the same 500mg dose, with no adverse events reported.*

In short: the same molecule your body already uses, delivered in a form shown to get more of it into your blood.

*Open-label, randomised, two-way crossover bioavailability trial in 24 healthy adults comparing Zooki liposomal glutathione (500mg) with non-liposomal glutathione (500mg) under fasting conditions. Peak blood concentration (Cmax) 3.7x higher; relative bioavailability 359%. No adverse events reported. Data on file.

Glutathione is one of the molecules your body produces on its own. If you choose to supplement it, the form you take really matters, because ordinary glutathione is hard for the body to absorb.

Made to be absorbed

Standard oral glutathione is largely broken down before it can be taken up. Our liposomal delivery system is designed to protect it through digestion, so more of every dose is absorbed rather than passed through.

Nearly 4x better absorbed

In our own randomised human trial, our liposomal glutathione reached peak blood levels nearly four times higher than standard glutathione, at the same 500mg dose, with no adverse events reported.*

A clean, simple capsule

A full 500mg of glutathione across two small daily capsules, with a short ingredient list. Free from dairy and soy, and suitable for vegans.

Universal Beauty Awards 2025, Bronze

Liposomal Glutathione Capsules were awarded Bronze for Best Skin Supplement.

Wellness from Within Awards 2024, Silver

Liposomal Glutathione Capsules took Silver in the Individual Vitamins category.

Nourish Supplement Awards 2024, Gold

Liposomal Glutathione Capsules won Gold in the Detox & Weight Management category.

You can find Zooki in over 1,400 locations across the UK, and in more than 50 countries worldwide.

Health and wellness stores. Available nationwide at Holland & Barrett, and in Whole Foods Market, Planet Organic and Daylesford Organic, alongside hundreds of independent health food stores across the UK.

Pharmacies. Available nationwide at Boots, at John Bell & Croyden (the pharmacist to the Royal family) on Wigmore Street, and in independent pharmacies nationwide.

Supermarkets. On shelf in select Sainsbury's, WHSmith and Booths stores. Available online from Ocado.

Premium department stores. Found in the food and wellness halls of Selfridges and Harrods.

Cafés, gyms and beyond. The Salad Project, ATIS, Urban Greens, Soho House and office canteens across the UK.

Glutathione exists in the body in two forms, and they're easy to confuse.

• GSH is the reduced form of glutathione, the active, ready-to-use form.
• GSSG is the oxidised form, created when two glutathione molecules bond together.
• Your body naturally cycles between the two, converting one into the other and back again as part of its normal internal chemistry, and a healthy body holds most of its glutathione as GSH.

When a supplement just says "glutathione," it isn't always clear which form you're getting. Ours is GSH, the reduced form, and it's the same form used in our clinical bioavailability trial.

Take two capsules a day, with or without food.

60 capsules (30 servings). Each capsule contains 250mg glutathione. Free from dairy and soy. Suitable for vegans.

• Ingredients: Liposomal Glutathione (Emulsifiers [Gum Arabic, Sunflower Lecithin], L-Glutathione, Inulin), Capsule Shell (Glazing Agent [Hydroxypropyl Methylcellulose], Colour [Calcium Carbonate]).

Nutritional information per daily intake (2 capsules):

• Glutathione: 500mg

Directions: Take 2 capsules daily, with or without food. Do not exceed the stated daily dose.

Warnings: If you are pregnant, breastfeeding, have a medical condition or are taking medication, consult a medical professional before taking. Not suitable for children. A food supplement should not be used as a substitute for a varied diet and healthy lifestyle.

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