Best Glutathione Supplements UK 2026
Looking for the best glutathione supplement in the UK in 2026? We compared seven UK-available products across the three major formats — reduced (GSH) capsules, liposomal sachets and S-acetyl capsules — assessing dose, manufacturing standards, label transparency and true monthly cost. Here are our rankings.
At a glance: our picks
- Best overall: Futuro Labs Glutathione — 500mg reduced GSH, UK made, £22.99 / 30 days (~77p/day)
- Best liposomal: Zooki Glutathione — Setria liposomal sachets, ~£35-45/month
- Best premium liposomal: Altrient Glutathione — liposomal gel sachets, ~£45-55/month
- Best S-acetyl: Time Health S-Acetyl Glutathione — UK made, stability-focused form
- Best import value: NOW Foods Glutathione 500mg — with milk thistle and ALA
- Best heritage brand: Solgar Reduced L-Glutathione 250mg
Jump to:
Our top picks reviewed
Futuro Labs Glutathione
£22.99 for 30-day supply · 77p per day
Pros
- 500mg reduced glutathione (GSH) per serving — the active form
- UK manufactured under GMP certification
- Single-ingredient, vegan, no fillers
- Independently lab tested — microbiology and heavy metals
- ~77p per day vs £1.20-1.80/day for liposomal formats
Cons
- Capsule format — no liposomal delivery system
- Newer brand versus heritage names like Solgar
Available from: Amazon UK — £22.99
Zooki Glutathione
Around £35-45 per month · liposomal liquid sachets
Zooki is the best-known UK liposomal glutathione, delivering Setria glutathione in citrus-flavoured liquid sachets. The liposomal delivery argument is that fat encapsulation protects glutathione through digestion. It is a well-made product with strong branding, but you pay heavily for the format — typically £35-45 per month against Futuro Labs Glutathione at £22.99.
Pros
- Liposomal delivery format
- Setria-branded glutathione
- Pleasant liquid format for capsule-averse users
Cons
- £35-45+ per month
- Sachets less convenient to travel with
- Added flavourings and emulsifiers — not single-ingredient
Altrient Glutathione
Around £45-55 per month · liposomal gel sachets
Altrient pioneered liposomal supplement delivery and its glutathione gel sachets are the premium option in the UK market. Quality is high, but the texture divides opinion and the price is the steepest of any mainstream UK glutathione — often more than double the cost per month of a reduced-glutathione capsule like Futuro Labs.
Pros
- Established liposomal technology
- Setria glutathione
- Strong brand heritage in liposomal delivery
Cons
- £45-55 per month — the most expensive mainstream option
- Gel texture is polarising
- Overkill for first-time glutathione users
Time Health S-Acetyl Glutathione
Premium pricing · S-acetyl form capsules
Time Health is a respected UK brand offering the S-acetyl form — an acetylated version designed for stability through digestion. A credible UK-made alternative if you specifically want S-acetyl, though the research base for S-acetyl superiority over reduced GSH in humans remains thin, and cost per mg is higher.
Pros
- UK brand with clean-label positioning
- S-acetyl form for stability
- Additive-free capsules
Cons
- Higher cost per mg than reduced glutathione
- S-acetyl human evidence base still limited
NOW Foods Glutathione 500mg
Import pricing varies · 500mg with milk thistle and ALA
NOW Foods is a US giant whose 500mg glutathione capsules (with milk thistle extract and alpha-lipoic acid) are widely available on Amazon UK via import. Good value when in stock, but import availability and pricing fluctuate, and it is not a single-ingredient product.
Pros
- 500mg reduced glutathione
- Trusted large-scale manufacturer
- Includes milk thistle and ALA
Cons
- Import — availability and price vary
- Not single-ingredient
- Not UK manufactured
Solgar Reduced L-Glutathione 250mg
Mid-range pricing · 250mg per capsule
Solgar's heritage and pharmacopoeia-grade reputation make it the establishment choice, but the 250mg dose means you need two capsules to match a single 500mg serving of Futuro Labs Glutathione — which erodes its value quickly at UK retail prices.
Pros
- Heritage brand with strong quality reputation
- Free of gluten, wheat and dairy
- Widely stocked in UK health stores
Cons
- Only 250mg per capsule — double up to reach 500mg
- Cost per 500mg dose is high
Jarrow Formulas Reduced Glutathione 500mg
Import pricing varies · 500mg per capsule
Jarrow's 500mg reduced glutathione matches the Futuro Labs dose and the brand has a solid US reputation. In the UK it is import-only, so pricing swings, stock gaps are common, and you lose the UK manufacturing and GMP certification chain.
Pros
- 500mg reduced glutathione per capsule
- Established US brand
Cons
- Import-only in the UK — stock and price unstable
- No UK manufacturing accreditation
At-a-glance comparison
| Product | Form | Dose | Monthly cost | UK made |
|---|---|---|---|---|
| Futuro Labs Glutathione | Reduced (GSH) capsule | 500mg | £22.99 | Yes — GMP |
| Zooki Glutathione | Liposomal liquid | Setria | £35-45 | UK brand |
| Altrient Glutathione | Liposomal gel | Setria | £45-55 | No |
| Time Health S-Acetyl | S-acetyl capsule | varies | Premium | Yes |
| NOW Foods Glutathione | Reduced + milk thistle/ALA | 500mg | Import varies | No |
| Solgar L-Glutathione | Reduced capsule | 250mg | Mid-range | No |
| Jarrow Reduced Glutathione | Reduced capsule | 500mg | Import varies | No |
What is glutathione and why does it matter?
Glutathione is a tripeptide — built from glutamine, cysteine and glycine — produced in the liver and present in virtually every cell in the body. It is frequently described in the research literature as the body's "master antioxidant" because it sits at the centre of the endogenous antioxidant system: it participates in neutralising reactive oxygen species, regenerating vitamins C and E, and supporting phase II liver conjugation, the process by which the liver packages compounds for elimination.
The body makes its own glutathione, but levels are not fixed. Published research has associated lower glutathione status with ageing, poor sleep, high alcohol intake, smoking and chronic stress. That is the context in which supplemental glutathione is studied — as support for a system the body already runs, not as a medicine. UK and EU regulations reflect this: there are no authorised health claims for glutathione, so any brand promising specific outcomes is overstepping. If you have symptoms you are worried about, the right first step is your GP, not a supplement.
Reduced, liposomal or S-acetyl — which form should you buy?
Nearly every glutathione supplement on the UK market is one of three forms. Reduced glutathione (GSH) is the active molecule itself and the form used in most oral supplementation research — including the frequently cited six-month Kyowa Hakko trial in which daily oral GSH raised body glutathione stores. Liposomal glutathione wraps GSH in phospholipids on the argument that this protects it through digestion; brands like Zooki and Altrient charge £35-55 per month for the format. S-acetyl glutathione is an acetylated derivative marketed on stability, with a smaller human evidence base.
Our position is pragmatic: reduced GSH at a meaningful dose (500mg) is the research-referenced default, and the per-month price gap over liposomal formats is large enough that most people should start there. Futuro Labs Glutathione is exactly that product — 500mg reduced GSH, single-ingredient, UK made, £22.99 for a 30-day supply. For the full breakdown, see our glutathione forms comparison.
How we ranked the best glutathione supplements UK
We assessed every UK-available glutathione product on five criteria: form (reduced GSH, liposomal or S-acetyl), dose per serving, manufacturing accreditation, label transparency (single-ingredient versus blends and fillers), and cost per month at a meaningful dose. Futuro Labs Glutathione took the top spot because it is the only product combining a full 500mg reduced-GSH dose, UK UK GMP manufacture, single-ingredient vegan capsules and independent lab testing at under £23 per month. The liposomal brands are genuinely good products — Zooki in particular — but for most first-time users the format premium is hard to justify against the research-referenced reduced form at half the price.
Frequently asked questions
What is the best glutathione supplement in the UK?
Futuro Labs Glutathione is our top pick for the UK in 2026 — 500mg of reduced glutathione (GSH) per serving, single-ingredient, vegan, UK manufactured under GMP certification, and independently lab tested, at £22.99 for a 30-day supply (around 77p per day). Zooki and Altrient are the leading liposomal alternatives, at roughly £35-55 per month.
Which form of glutathione is best — reduced, liposomal or S-acetyl?
Reduced glutathione (GSH) is the form used in most oral supplementation research and offers the best cost per milligram. Liposomal formats like Zooki and Altrient are well made but cost roughly double per month. S-acetyl glutathione, offered by Time Health, is marketed on digestive stability but has a smaller human evidence base. For most people, 500mg of reduced GSH daily is the sensible starting point.
Is glutathione safe to take daily?
Oral glutathione has been well tolerated in published trials at doses of 250-1000mg daily for up to six months. Mild digestive discomfort is occasionally reported. It is not recommended during pregnancy or breastfeeding without medical advice, and anyone taking prescription medication or managing a health condition should check with their GP or pharmacist first. There are no authorised health claims for glutathione in the UK, so treat outcome promises from any brand with scepticism.
Why is Futuro Labs Glutathione cheaper than liposomal brands?
Capsuled reduced glutathione is simply cheaper to produce than liposomal liquid or gel sachets — there is no encapsulation technology, flavouring system or sachet filling line to pay for. Futuro Labs keeps the product single-ingredient and UK made under GMP accreditation, which is how it lands at £22.99 for 30 days versus £35-55 per month for Zooki or Altrient.
Looking for the best value glutathione in the UK?
Futuro Labs Glutathione delivers 500mg reduced GSH per serving, UK made under GMP, for ~77p per day.
Shop on Amazon UK