We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

perdose
Updated

Home › Amino acids & derivatives › N-Acetyl Cysteine

BulkAmino acids & derivatives

N Acetyl L Cysteine (NAC), 1 kg

£64.99 for 1 kg at Bulk. That works out at 4p per 600 mg, which ranks it 1st of the 28 N-Acetyl Cysteine NAC products we price across 5 UK retailers.

What it really costs, per 600 mg4pOne 600 mg dose is our comparison unit for N-Acetyl Cysteine. It is not a recommendation.
A day4p
A week27p
A month£1.17
A year£14.23

At one 600 mg dose a day, this pack lasts 4.6 years. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 1000 ÷ 0.7 per serving = 1428.6
  • In the pack: 1428.6 × 700 mg = 1,000 g
  • £64.99 ÷ 1,000 g × 600 mg = 3.9p per 600 mg
  • A week 3.9p × 7 = 27p · a month × 30 = £1.17 · a year × 365 = £14.23
  • 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: N-Acetyl Cysteine NAC

All 28, ranked →
This productCheapest per 600 mgBulk · 700 mg a serving · £1.17 a month · a pack lasts 4.6 years4pshown above
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)

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

Pack sizes

PackPricePer doseA year
1 kgthis pack£64.994p£14.23
500 g£34.994p£15.33
100 g£9.996p£21.88

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

On the label

N-Acetyl Cysteine · NAC
700 mg per serving (stated on the label)
Pack
1 kg · 1,428.6 servings · 0.7 g a serving
Cost per serving
5p (1428.6 servings in the pack)
More label details
Barcode
5060343741362
Sold by
Bulk
What the listing says
“1kg” · “Per Serving (700 mg)” · “[N Acetyl L Cysteine ; 700mg]”
Ingredients

100% N-Acetyl L-Cysteine.

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

Is something wrong? Tell us

Add to your basket

View basket

Your basket prices everything you take together: whole packs, delivery included, from as few websites as you like.

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

Price history

No price change since 20 September 2026. Checked on 1 day, most recently 20 September 2026.

Price at every check
£64.99Bulk
First recorded
£64.9920 Sept
Checked on
1 daysince 20 Sept

Checked once so far, on 20 September 2026.

  1. First checked at Bulk: £64.99

Questions about this product

How much does Bulk N Acetyl L Cysteine (NAC) cost per 600 mg?

4p per 600 mg, from £64.99 for 1 kg at Bulk, checked on 20 September 2026.

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

Yes. Of the 28 we price across 5 UK retailers, this is the cheapest per 600 mg.

How long does one pack last?

4.6 years at one 600 mg dose. The pack holds 1,000 g in total.

About Bulk

Founded 2006 · Colchester, England

Bulk is a British sports nutrition company based in Colchester, Essex. Adam Rossiter and Elliot Dawes, who met at the University of Essex, started it in 2006 as Bulk Powders; it was renamed Bulk at the start of 2021, and the founders remain its majority owners.

All 133 Bulk products, priced per doseVisit Bulk (opens in a new tab)

More from Bulk

Keep comparing

All N-Acetyl CysteineEvery form, cheapest per 600 mg firstN-Acetyl Cysteine guideWhat it is, why people take it, how the forms differBulkAll 133 products from this brand, per doseAmino acids & derivativesEverything else we price in this categoryN-Acetyl Cysteine price historyEvery N-Acetyl Cysteine product's price per dose and price historyBuild a basketThe cheapest way to buy several at onceHow we compareWhere every number on this page comes from