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Pure EncapsulationsAmino acids & derivatives

L-Arginine, 90 capsules

£27.65 for 90 capsules at Healf. That works out at £1.32 per 3 g, which ranks it 9th of the 12 L-Arginine products we price across 7 UK retailers.

What it really costs, per 3 g£1.32One 3 g dose is our comparison unit for L-Arginine. It is not a recommendation.
A day£1.32
A week£9.22
A month£39.50
A year£480.58

At one 3 g dose a day, this pack lasts 21 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 90 ÷ 2 per serving = 45
  • In the pack: 45 × 1.4 g = 63 g
  • £27.65 ÷ 63 g × 3 g = £1.32 per 3 g
  • A week £1.32 × 7 = £9.22 · a month × 30 = £39.50 · a year × 365 = £480.58
  • 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 L-Arginine

All 12, ranked →
ArginineBio-Synergy · 1 g a serving · £12.23 a month · a pack lasts 42 days41p£16.99View at Bio-Synergy (opens in a new tab)
L-Arginine 1000mgLamberts Healthcare (Nature's Best) · 1 g a serving · £13.95 a month · a pack lasts 30 days47p£13.95View at Lamberts Healthcare (opens in a new tab)
L-ArginineHealf · 1 g a serving · £16.10 a month · a pack lasts 20 days54p£10.73View at Healf (opens in a new tab)
L-Arginine Capsules 500mgSimply Supplements · 500 mg a serving · £17.99 a month · a pack lasts 40 days60p£23.99View at Simply Supplements (opens in a new tab)
LambertsL-Arginine HCl 1000mgVitamin Planet · 1 g a serving · £23.11 a month · a pack lasts 30 days77p£23.11View at Vitamin Planet (opens in a new tab)
This productHealf · 1.4 g a serving · £39.50 a month · a pack lasts 21 days£1.32shown above

Switching to the Bio-Synergy pack saves £27.27 a month at the same 3 g dose.

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

On the label

L-Arginine · L-Arginine
1.4 g per serving (stated on the label)
Pack
90 capsules · 45 servings · 2 capsule(s) a serving
Cost per serving
61p (45 servings in the pack)
More label details
Claimed on the listing
vegetarian
Sold by
Healf
What the listing says
“90 caps” · “Servings Per Container: 45” · “Serving Size: 2 capsules” · “L-Arginine HCl (Free-Form) ; 1400 mg”
Ingredients

L-Arginine HCl (Free-Form), Vegetarian Capsule (Cellulose, Water)

From the Healf 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

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

Lowest recorded
£27.6510 Oct
Highest recorded
£29.501 Oct
First recorded
£29.501 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Down at Healf: £27.66 → £27.65 (−0.0%)
  2. Down at Healf: £29.50 → £27.66 (−6.2%)
  3. First checked at Healf: £29.50

Questions about this product

How much does Pure Encapsulations L-Arginine cost per 3 g?

£1.32 per 3 g, from £27.65 for 90 capsules at Healf, checked on 20 October 2026.

Is it the cheapest L-Arginine in the UK?

No, it is 9th of 12. L Arginine at Bulk works out at 8p per 3 g.

How long does one pack last?

21 days at one 3 g dose. The pack holds 63 g in total.

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