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Pure EncapsulationsVitamins

PureDefense, 30 capsules

£28.15 for 30 capsules at W-Wellness. It carries more than one active ingredient, so it is not ranked against single-ingredient products. Each price below counts one ingredient only.

What it really costs, per 1,000 IU£1.88One 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.
A day£1.88
A week£13.14
A month£56.30
A year£684.98

At one 1,000 IU dose a day, this pack lasts 15 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Vitamin D3

  • Servings: 30 ÷ 2 per serving = 15
  • In the pack: 15 × 1,000 IU = 15,000 IU
  • £28.15 ÷ 15,000 IU × 1,000 IU = £1.88 per 1,000 IU
  • A week £1.88 × 7 = £13.14 · a month × 30 = £56.30 · a year × 365 = £684.98
  • Amount per serving: stated on the label.

N-Acetyl Cysteine

  • Servings: 30 ÷ 2 per serving = 15
  • In the pack: 15 × 450 mg = 6.75 g
  • £28.15 ÷ 6.75 g × 600 mg = £2.50 per 600 mg
  • A week £2.50 × 7 = £17.52 · a month × 30 = £75.07 · a year × 365 = £913.31
  • Amount per serving: stated on the label.

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: vitamin D3

All 207, ranked →
WeightWorldHigh-Strength Vitamin D3 TabletsCheapest per 1,000 IUWeightWorld · 4,000 IU a serving · 17p a month · a pack lasts 4.4 years1p£8.99View at WeightWorld (opens in a new tab)
ZipVitVitamin D3 4000iuZipVit · 4,000 IU a serving · 17p a month · a pack lasts 4 years1p£8.49View at ZipVit (opens in a new tab)
WeightWorldVitamin D3 + K2 (MK7) TabletsWeightWorld · 4,000 IU a serving · 21p a month · a pack lasts 4 years1p£9.99View at WeightWorld (opens in a new tab)
This productW-Wellness · 1,000 IU a serving · £56.30 a month · a pack lasts 15 days£1.88shown above

Ranked purely by price per 1,000 IU. 439 combination products also contain vitamin D3.

How it compares: N-Acetyl Cysteine NAC

All 28, ranked →
N Acetyl L Cysteine (NAC)Cheapest per 600 mgBulk · 700 mg a serving · £1.17 a month · a pack lasts 4.6 years4p£64.99View at Bulk (opens in a new tab)
N Acetyl L Cysteine (NAC)Bulk · 700 mg a serving · £1.26 a month · a pack lasts 2.3 years4p£34.99View at Bulk (opens in a new tab)
N Acetyl L Cysteine (NAC)Bulk · 700 mg a serving · £1.80 a month · a pack lasts 5 months6p£9.99View at Bulk (opens in a new tab)
This productW-Wellness · 450 mg a serving · £75.07 a month · a pack lasts 11 days£2.50shown above

Ranked purely by price per 600 mg. 44 combination products also contain N-Acetyl Cysteine.

On the label

Vitamin D3 · Vitamin D3
1,000 IU per serving (stated on the label)
N-Acetyl Cysteine · NAC
450 mg per serving (stated on the label)
Pack
30 capsules · 15 servings · 2 capsule(s) a serving
Cost per serving
£1.88 (15 servings in the pack)
More label details
Claimed on the listing
vegetarian
Barcode
766298023588
Sold by
W-Wellness
What the listing says
“Contains: 30 capsules” · “Each serving of two vegetarian capsules” · “450mg of N-acetylcysteine (NAC) per serving”
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One 1,000 IU dose is our comparison unit, not a recommendation.

Price history

No price change since 15 October 2026. Checked on 6 days, most recently 20 October 2026.

Price at every check
£28.15W-Wellness
First recorded
£28.1515 Oct
Checked on
6 dayssince 15 Oct
Pack price at each check.
  1. First checked at W-Wellness: £28.15

Questions about this product

How much does Pure Encapsulations PureDefense cost per 600 mg?

£2.50 per 600 mg, from £28.15 for 30 capsules at W-Wellness, checked on 20 October 2026.

How long does one pack last?

11 days at one 600 mg dose. The pack holds 6.75 g in total.

How much does Pure Encapsulations PureDefense cost per 1,000 IU?

£1.88 per 1,000 IU, from £28.15 for 30 capsules at W-Wellness, checked on 20 October 2026.

How long does one pack last?

15 days at one 1,000 IU dose. The pack holds 15,000 IU in total.

About Pure Encapsulations

All 135 Pure Encapsulations products, priced per dose

More from Pure Encapsulations

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