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BulkAmino acids & derivatives

L Arginine, 1 kg

£27.19 for 1 kg at Bulk. That works out at 8p per 3 g, which ranks it 1st of the 12 L-Arginine products we price across 7 UK retailers.

What it really costs, per 3 g8pOne 3 g dose is our comparison unit for L-Arginine. It is not a recommendation.
A day8p
A week57p
A month£2.45
A year£29.77

At one 3 g dose a day, this pack lasts 11 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 1000 ÷ 3 per serving = 333.3
  • In the pack: 333.3 × 3 g = 1,000 g
  • £27.19 ÷ 1,000 g × 3 g = 8.16p per 3 g
  • A week 8.16p × 7 = 57p · a month × 30 = £2.45 · a year × 365 = £29.77
  • 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: L-Arginine

All 12, ranked →
This productCheapest per 3 gBulk · 3 g a serving · £2.45 a month · a pack lasts 11 months8pshown above
L ArginineBulk · 3 g a serving · £4.86 a month · a pack lasts 5 months16p£26.99View at Bulk (opens in a new tab)

Ranked purely by price per 3 g. 15 combination products also contain L-Arginine.

Pack sizes

PackPricePer doseA year
1 kgthis pack£27.198p£29.77
100 gout of stock£3.9912p£43.69
500 g£26.9916p£59.11

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

On the label

L-Arginine · L-Arginine
3 g per serving (stated on the label)
Pack
1 kg · 333.3 servings · 3 g a serving
Cost per serving
8p (333.3 servings in the pack)
More label details
Barcode
5060343744981
Sold by
Bulk
What the listing says
“1kg” · “Per Serving (3 g)” · “[L-Arginine ; 3g]”
Ingredients

L-Arginine.

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

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One 3 g 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
£27.19Bulk
First recorded
£27.1920 Sept
Checked on
1 daysince 20 Sept

Checked once so far, on 20 September 2026.

  1. First checked at Bulk: £27.19

Questions about this product

How much does Bulk L Arginine cost per 3 g?

8p per 3 g, from £27.19 for 1 kg at Bulk, checked on 20 September 2026.

Is it the cheapest L-Arginine in the UK?

Yes. Of the 12 we price across 7 UK retailers, this is the cheapest per 3 g.

How long does one pack last?

11 months at one 3 g 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.

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