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NOW FoodsAmino acids & derivatives

Glutathione 500mg, 120 capsules

£41.49 for 120 capsules at Healf. That works out at 17p per 250 mg, which ranks it 1st of the 15 glutathione products we price across 3 UK retailers.

What it really costs, per 250 mg17pOne 250 mg dose is our comparison unit for glutathione. It is not a recommendation.
A day17p
A week£1.21
A month£5.19
A year£63.10

At one 250 mg dose a day, this pack lasts 8 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Glutathione

  • Servings: 120 ÷ 1 per serving = 120
  • In the pack: 120 × 500 mg = 60 g
  • £41.49 ÷ 60 g × 250 mg = 17.3p per 250 mg
  • A week 17.3p × 7 = £1.21 · a month × 30 = £5.19 · a year × 365 = £63.10
  • Amount per serving: stated on the label.

Alpha-lipoic acid

  • Servings: 120 ÷ 1 per serving = 120
  • In the pack: 120 × 50 mg = 6 g
  • £41.49 ÷ 6 g × 300 mg = £2.07 per 300 mg
  • A week £2.07 × 7 = £14.52 · a month × 30 = £62.24 · a year × 365 = £757.19
  • Amount per serving: stated on the label.

Milk thistle

  • Servings: 120 ÷ 1 per serving = 120
  • In the pack: 120 × 80 mg = 9.6 g
  • £41.49 ÷ 9.6 g × 150 mg = 64.8p per 150 mg
  • A week 64.8p × 7 = £4.54 · a month × 30 = £19.45 · a year × 365 = £236.62
  • Amount per serving: active constituent content stated on the label (or its stated percentage of the extract).

The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.

How it compares: glutathione

All 15, ranked →
This productCheapest per 250 mgHealf · 500 mg a serving · £5.19 a month · a pack lasts 8 months17pshown above
Glutathione 500mgHealf · 500 mg a serving · £5.65 a month · a pack lasts 4 months19p£22.58View at Healf (opens in a new tab)

Ranked purely by price per 250 mg. 16 combination products also contain glutathione.

How it compares: alpha-lipoic acid

All 10, ranked →
WeightWorldAlpha Lipoic Acid CapsulesCheapest per 300 mgWeightWorld · 650 mg a serving · £1.54 a month · a pack lasts 1.1 years5p£19.99View at WeightWorld (opens in a new tab)
Alpha Lipoic Acid (ALA) Capsules 750mgSimply Supplements · 750 mg a serving · £2.90 a month · a pack lasts 5 months10p£14.49View at Simply Supplements (opens in a new tab)
Alpha Lipoic Acid 300mgLamberts Healthcare (Nature's Best) · 300 mg a serving · £5.17 a month · a pack lasts 3 months17p£15.50View at Lamberts Healthcare (opens in a new tab)
This productHealf · 50 mg a serving · £62.24 a month · a pack lasts 20 days£2.07shown above

Ranked purely by price per 300 mg. 50 combination products also contain alpha-lipoic acid.

How it compares: milk thistle

All 15, ranked →
Milk Thistle Extract, Maximum Strength, 750 mgCheapest per 150 mgHealf · 600 mg a serving · £1.62 a month · a pack lasts 12 months5p£19.40View at Healf (opens in a new tab)
Double Strength Milk ThistleHealf · 240 mg a serving · £2.40 a month · a pack lasts 11 months8p£25.59View at Healf (opens in a new tab)
ZipVitMilk Thistle 6000mgZipVit · 133.3 mg a serving · £3.75 a month · a pack lasts 5 months12p£19.99View at ZipVit (opens in a new tab)
This productHealf · 80 mg a serving · £19.45 a month · a pack lasts 2 months65pshown above

Ranked purely by price per 150 mg. 13 combination products also contain milk thistle.

Pack sizes

PackPricePer doseA year
120 capsulesthis pack£41.4917p£63.10
60 capsules£22.5819p£68.68
30 capsules£12.4921p£75.98

This pack is the cheapest of the 3 sizes per dose.

On the label

Glutathione · Glutathione
500 mg per serving (stated on the label)
Alpha-lipoic acid · Alpha-lipoic acid
50 mg per serving (stated on the label)
Pack
120 capsules · 120 servings · 1 capsule(s) a serving
Cost per serving
35p (120 servings in the pack)
More label details
Milk thistle · Milk thistle (by silymarin)
80 mg per serving (active constituent content stated on the label (or its stated percentage of the extract))
Sold by
Healf
What the listing says
“120 caps” · “Serving Size: 1 Veg Capsule” · “Alpha Lipoic Acid ; 50 mg”
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One 250 mg dose is our comparison unit, not a recommendation.

Price history

1 price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Lowest recorded
£41.496 Oct
Highest recorded
£45.451 Oct
First recorded
£45.451 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Down at Healf: £45.45 → £41.49 (−8.7%)
  2. First checked at Healf: £45.45

Questions about this product

How much does NOW Foods Glutathione 500mg cost per 300 mg?

£2.07 per 300 mg, from £41.49 for 120 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

20 days at one 300 mg dose. The pack holds 6 g in total.

How much does NOW Foods Glutathione 500mg cost per 250 mg?

17p per 250 mg, from £41.49 for 120 capsules at Healf, checked on 20 October 2026.

Is it the cheapest glutathione in the UK?

Yes. Of the 15 we price across 3 UK retailers, this is the cheapest per 250 mg.

How long does one pack last?

8 months at one 250 mg dose. The pack holds 60 g in total.

How much does NOW Foods Glutathione 500mg cost per 150 mg?

65p per 150 mg, from £41.49 for 120 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

2 months at one 150 mg dose. The pack holds 9.6 g in total.

About NOW Foods

All 109 NOW Foods products, priced per dose

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