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Cell Protection

Cell protection is the shorthand for a group of nutrients and plant compounds bought for the same broad reason: the body is under constant oxidative pressure, and a handful of vitamins and minerals have an authorised role in protecting cells from it. Vitamin E, selenium, vitamin C, zinc, copper, manganese and riboflavin all contribute to the protection of cells from oxidative stress. That claim is permitted because the evidence behind it was assessed and accepted – it is worth knowing which nutrients carry it and which do not.

Alongside them sit the compounds that get talked about far more than they are regulated: glutathione, quercetin, alpha lipoic acid, resveratrol, astaxanthin, grape seed and pine bark extract, sulforaphane, NAC, NMN and NAD precursors, and Salvestrol. None of these carry an authorised health claim in the UK, so you will not find one made here. They are included because customers ask for them by name and buy them knowingly, not because we can tell you what they will do.

Everything on this page is sold by Quickvit with free UK delivery over £40. If you want to talk something through before ordering, call us on 01323 928523.

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Natures AidBeetroot 60 Capsules

Original price £10.99 - Original price £10.99
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Research studies have demonstrated that beetroots are a uniquely rich source of phytonutrient pigments collectively known as betalains. Betalains a...

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ViridianOrganic Ultimate Beauty Oil 200ml

Original price £12.95
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A balanced source of 3:6:9 fatty acids including GLA. Contains a broad range of potent antioxidants including vitamin E (full spectrum of tocophero...

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LambertsN-Acetyl Cysteine (NAC) 60 Capsules

Original price £18.95 - Original price £18.95
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Lamberts N-Acetyl Cysteine (NAC) delivers 600mg of NAC, an amino acid derivative, per capsule. It's a straightforward, single-ingredient nutritiona...

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BiocareGluco Complex 90 Capsules

Original price £29.39 - Original price £29.39
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The Biocare Gluco Complex 90 Capsules offer a unique blend of high dose chromium, vitamins B2, B3, B5, and B6, manganese, magnesium, alpha lipoi...

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WassenSelenium ACE+D 90 Tablets

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Wassen Selenium ACE+D features an organic selenium yeast that the body absorbs up to twice as effectively as non-organic forms. This formula combin...

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ViridianNatural Vitamin E 330iu 30 Capsules

Original price £13.05
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Viridian Natural Vitamin E 330iu Vitamin E has a role in the protection of cells from oxidative stress. This 'oxidative stress' appears to be a maj...

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LambertsQuercetin 500Mg 60 Tablets

Original price £29.29 - Original price £29.29
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Lamberts Quercetin delivers 500mg of quercetin, a plant flavonoid, per tablet — a straightforward single-ingredient nutritional supplement.This pac...

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LambertsAlpha Lipoic Acid 300Mg (Thioctic Acid) 90 Tabs

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Lamberts Alpha Lipoic Acid delivers 300mg of alpha lipoic acid (thioctic acid) per tablet, a straightforward single-ingredient nutritional suppleme...

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BiocareMicroCell Vitamin E 200iu 60 Capsules

Original price £14.15 - Original price £14.15
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Vitamin E is an antioxidant that contributes to the protection of cells from oxidative stress Micellised into small droplets using our unique Micr...

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Pharma NordBio-Pycnogenol 40mg 60 Tablets

Original price £25.99
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Pycnogenol is pine bark extract that has potent antioxidant qualities.

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SolgarVitamin E 134mg (200iu) 50 Vegetable Softgels

Original price £15.99 - Original price £15.99
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Solgar Vitamin E 134mg (200iu) Vegetable Softgel capsules are natural source of d-alpha tocopherol plus mixed tocopherols. Vitamin E is the major f...

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Natures AidVitamin E (Natural) 400iu 60 Capsules

Original price £13.99 - Original price £13.99
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Natures Aid Vitamin E Capsules contain top quality Vitamin E from a natural source. Vitamin E is the major fat soluble antioxidant that protects ou...

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LifeplanVitamin E 400iu 60 Capsules

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These capsules contain high quality Vitamin E and are made from natural sources. Natural vitamin E is better absorbed and utilised than synthetic ...

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NMN + Fisetin - Phytoceutics Phytopure 60 Capsules

Original price £66.99 - Original price £66.99
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Phytoceutics Phytopure NMN + Fisetin 60 Capsules Elevate Your Wellness with Advanced Nutraceuticals Introducing the Phytoceutics Phytopure NMN + Fi...

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Source NaturalsWellness Formula 90 Tablets

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This formula provides a potent combination of high-strength vitamin C with more than 30 vital vitamins, minerals, and clinically recognized herbs a...

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QuestLiposomal Gluthathione 30 Capsules

Original price £26.50 - Original price £26.50
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GLUTATHIONE: Glutathione is an antioxidant substance made from the amino acids glycine, cysteine, and glutamic acid. It supports many body process...

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LambertsAstaxanthin 8mg 30 Tablets

Original price £12.95 - Original price £12.95
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Lamberts Astaxanthin combines 24mg of vitamin E with 8mg of astaxanthin (from Haematococcus pluvialis extract) per two capsules, a marine-derived c...

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LambertsNatural Vitamin E 250 I.U. 100 Caps

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Lamberts Natural Vitamin E delivers 168mg (250iu) of vitamin E in its natural d-alpha form per capsule, encapsulated with sunflower seed oil. Vitam...

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BiocareAntioxidant Complex 30 Capsules

Original price £28.19 - Original price £28.19
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Antioxidant Complex is a unique combination of powerful nutrients including vitamin C for immune and antioxidant support, with turmeric, green t...

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ViridianGrape Seed Extract 30 Capsules

Original price £14.20
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Viridian Grape Seed Extract Viridian Grape Seed Extract is a high potency grape seed extract containing a rich source of the plant flavonoids Proan...

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QuestVitamin E 400iu 60 Capsules

Original price £14.99 - Original price £14.99
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Natural ratio mixed tocopherols for increased vitamin E activity alpha, beta, delta and gamma (as occurs in nature) Vitamin E is the major fat sol...

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New LeafNAC 600mg 120 Vegan Tablets

Original price £13.49 - Original price £13.49
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New Leaf's NAC 600mg supplement delivers N-Acetyl Cysteine, a vital amino acid your body cannot produce independently. Each serving of two tablets ...

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LambertsNatural Vitamin E 400 I.U. 180 Caps

Original price £39.95 - Original price £39.95
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Lamberts Natural Vitamin E delivers a higher-potency 268mg (400iu) of vitamin E in its natural d-alpha form per capsule, encapsulated with sunflowe...

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LambertsNatural Vitamin E 400 I.U. 60 Caps

Original price £19.95 - Original price £19.95
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Lamberts Natural Vitamin E delivers a higher-potency 268mg (400iu) of vitamin E in its natural d-alpha form per capsule, encapsulated with sunflowe...

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Health PlusSelenium 50ug 90 Tablets

Original price £6.99 - Original price £6.99
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Selenium is a key antioxidant nutrient and functions best with vitamins A, C and E. These special antioxidant nutrients help prevent free radical ...

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ViridianGrape Seed Extract 90 Capsules

Original price £36.75
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Viridian Grape Seed Extract Viridian Grape Seed Extract is a high potency grape seed extract containing a rich source of the plant flavonoids Proan...

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Original price £36.75
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SolgarUbiquinol 100mg (Reduced CoQ10) 50 Softgels

Original price £62.68 - Original price £62.68
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Solgar Coenzyme Q10 plays a vital role in cellular health and energy production. Solgar Ubiquinol is the reduced, antioxidant form of Coenzyme Q10 ...

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SolgarAstaxanthin 5mg 30 Softgels

Original price £20.00 - Original price £20.00
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Astaxanthin is a naturally occurring carotenoid derived from marine fish and algae. Astaxanthin promotes antioxidant health, protecting the body's ...

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SolgarQuercetin Complex 50 Vcaps

Original price £22.35 - Original price £22.35
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Quercetin is a non-citrus bioflavonoid that works in synergy with Vitamin C. Bioflavonoids are naturally present in fruit, vegetables and herbs, an...

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SolgarSelenium 200ug (Yeast Free) 50 Tablets

Original price £12.95 - Original price £12.95
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Selenium is an essential trace mineral that works synergistically with Vitamin E. As a constituent of glutathione peroxidase, an antioxidant enzyme...

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Only a short list of nutrients may legally be described as protecting cells from oxidative stress: vitamin E, vitamin C, selenium, zinc, copper, manganese and riboflavin. If a product is built on one of those, the claim on the box is authorised and means something specific.

Everything else in this category – glutathione, quercetin, resveratrol, NMN, sulforaphane, Salvestrol – sells on reputation rather than an approved claim. That is not a criticism of them, but it does mean the packaging has to stay quiet, and a product making bolder promises is the one to be sceptical about.

Selenium is the one people most often get wrong. It carries an authorised role in cell protection at a modest intake, and UK soils are low in it, so a supplement is reasonable. But the gap between a useful amount and too much is narrower than with most minerals, which is why reputable products sit around 100–200mcg rather than going higher.

Yeast-bound selenium and sodium selenite are the two common forms. If you already take a multivitamin, check what is in it before adding a standalone – the totals add up quickly.

Glutathione is the body's own compound, and swallowing it is not straightforward – standard capsules are broken down before much arrives. This is why liposomal and reduced forms exist and cost more, and Well Actually, Coyne and Balanced all sell them for that reason.

NAC takes the other route: it supplies a building block rather than the finished compound. Both approaches are legitimate and neither is proven superior, so buy on format and price rather than on which sounds more advanced.

NMN and nicotinamide riboside are precursors – raw material the body converts. The research is genuinely active but it is early, most of it is not in humans, and no health claim is authorised in the UK. Anyone telling you otherwise is ahead of the evidence.

Purity and dose are where these products differ. BioTech Life Sciences state a purity figure and sell by the gram; KIKI Health, Phytoceutics and Feel Supreme sell capsules, sometimes paired with resveratrol or astaxanthin. Compare cost per gram rather than cost per bottle, because bottle sizes vary enormously.

Cell protection: common questions

Which nutrients here have an approved claim?

Vitamin E, vitamin C, selenium, zinc, copper, manganese and riboflavin contribute to the protection of cells from oxidative stress. The plant compounds and NMN products do not carry an authorised claim.

Is there any point taking more than one of these?

Usually not. Most people are better served by one well-chosen product than by stacking several. Check your multivitamin first – it may already cover the selenium, zinc and vitamin E.

Why is liposomal glutathione so much dearer?

Plain glutathione is largely broken down during digestion. Liposomal and reduced forms are made to survive that, which costs more to produce. Whether the difference justifies the price is a judgement call.

What is Salvestrol?

Salvestrol is a branded range of concentrated plant compounds sourced from fruit and vegetables. It has a loyal following and we stock the full range, but no health claim is authorised for it and we do not make one.

Can I take these alongside prescribed medication?

Check with your GP or pharmacist first. NAC, quercetin and high-dose antioxidants can interact with some medicines, and anyone on treatment should ask before adding anything.

How much is delivery?

UK delivery is free on orders over £40. If you would like advice before ordering, call us on 01323 928523.