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Home › Amino acids & derivatives › L-Arginine

NOW FoodsAmino acids & derivatives

L-Arginine, 120 tablets

£15.06 for 120 tablets at Healf. That works out at 38p per 3 g, which ranks it 3rd of the 12 L-Arginine products we price across 7 UK retailers.

What it really costs, per 3 g38pOne 3 g dose is our comparison unit for L-Arginine. It is not a recommendation.
A day38p
A week£2.64
A month£11.30
A year£137.42

At one 3 g dose a day, this pack lasts 40 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 120 ÷ 1 per serving = 120
  • In the pack: 120 × 1 g = 120 g
  • £15.06 ÷ 120 g × 3 g = 37.7p per 3 g
  • A week 37.7p × 7 = £2.64 · a month × 30 = £11.30 · a year × 365 = £137.42
  • 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 L-Arginine

All 12, ranked →
L ArginineCheapest per 3 gBulk · 3 g a serving · £2.45 a month · a pack lasts 11 months8p£27.19View at Bulk (opens in a new tab)
L ArginineBulk · 3 g a serving · £4.86 a month · a pack lasts 5 months16p£26.99View at Bulk (opens in a new tab)
This productHealf · 1 g a serving · £11.30 a month · a pack lasts 40 days38pshown above

Switching to the Bulk pack saves £8.85 a month at the same 3 g dose.

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

Pack sizes

PackPricePer doseA year
120 tabletsthis pack£15.0638p£137.42
60 tablets£10.7354p£195.82

This pack is the cheapest of the 2 sizes per dose.

On the label

L-Arginine · L-Arginine
1 g per serving (stated on the label)
Pack
120 tablets · 120 servings · 1 tablet(s) a serving
Cost per serving
13p (120 servings in the pack)
More label details
Claimed on the listing
vegetarian
Sold by
Healf
What the listing says
“120 caps” · “Serving Size: 1 Tablet” · “L-Arginine HCl) (1,000 mg) ; 1 g” · “from 1,250 mg L-Arginine HCl”
Ingredients

L-Arginine (from 1,250 mg L-Arginine HCl) (1,000 mg), Bulking Agent (Microcrystalline Cellulose), Capsule Shell (Hydroxypropyl Cellulose), Stearic Acid (Vegetable Source), Croscarmellose Sodium, Anti-Caking Agent (Silicon Dioxide), Vegetarian Coating [Hypromellose (Cellulose), Calcium Carbonate, Glycerin]

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

No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check
£15.06Healf
First recorded
£15.061 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £15.06

Questions about this product

How much does NOW Foods L-Arginine cost per 3 g?

38p per 3 g, from £15.06 for 120 tablets at Healf, checked on 20 October 2026.

Is it the cheapest L-Arginine in the UK?

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

How long does one pack last?

40 days at one 3 g dose. The pack holds 120 g in total.

About NOW Foods

All 109 NOW Foods products, priced per dose

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