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WeightWorldAmino acids & derivatives

N-Acetyl Cysteine Capsules

£16.48 for 180 servings at WeightWorld. That works out at 9p per 600 mg, which ranks it 6th of the 28 N-Acetyl Cysteine NAC products we price across 5 UK retailers.

What it really costs, per 600 mg9pOne 600 mg dose is our comparison unit for N-Acetyl Cysteine. It is not a recommendation.
A day9p
A week64p
A month£2.75
A year£33.42

At one 600 mg dose a day, this pack lasts 6 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • In the pack: 180 × 600 mg = 108 g
  • £16.48 ÷ 108 g × 600 mg = 9.16p per 600 mg
  • A week 9.16p × 7 = 64p · a month × 30 = £2.75 · a year × 365 = £33.42
  • 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.

Cheaper 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)
VitaBrightNAC (N Acetyl Cysteine)VitaBright · 600 mg a serving · £2.50 a month · a pack lasts 2 years8p£59.97View at VitaBright (opens in a new tab)
VitaBrightNAC (N Acetyl Cysteine)VitaBright · 600 mg a serving · £2.67 a month · a pack lasts 1.5 years9p£47.99View at VitaBright (opens in a new tab)
WeightWorldThis productWeightWorld · 600 mg a serving · £2.75 a month · a pack lasts 6 months9pshown above

Switching to the Bulk pack saves £1.58 a month at the same 600 mg dose.

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

On the label

N-Acetyl Cysteine · NAC
600 mg per serving (stated on the label)
Pack
180 servings · 1 capsule(s) a serving
Cost per serving
9p (180 servings in the pack)
More label details
Sold by
WeightWorld
What the listing says
“Servings per Container: 180” · “Serving Size: 1 Capsules” · “N -Acetyl Cysteine ; 600 mg”
Ingredients

: Microcrystalline Cellulose, Anti-Caking Agent: Hydroxypropyl Methyl Cellulose, Capsule Shell: Hypromellose (HPMC) Advice Do not exceed the recommended daily dose. Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Discontinue use if any adverse reactions occur. Not intended for use by persons under the age of 18.

From the WeightWorld listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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One 600 mg dose is our comparison unit, not a recommendation.

Price history

No price change since 9 October 2026. Checked on 1 day, most recently 9 October 2026.

Price at every check
£16.48WeightWorld
First recorded
£16.489 Oct
Checked on
1 daysince 9 Oct

Checked once so far, on 9 October 2026.

  1. First checked at WeightWorld: £16.48

Questions about this product

How much does WeightWorld N-Acetyl Cysteine Capsules cost per 600 mg?

9p per 600 mg, from £16.48 for 180 servings at WeightWorld, checked on 9 October 2026.

Is it the cheapest N-Acetyl Cysteine NAC in the UK?

No, it is 6th of 28. N Acetyl L Cysteine (NAC) at Bulk works out at 4p per 600 mg.

How long does one pack last?

6 months at one 600 mg dose. The pack holds 108 g in total.

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