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Home › Amino acids & derivatives › L-Lysine

QuestAmino acids & derivatives

L-Lysine 1000mg, 90 tablets

£20.73 for 90 tablets at Vitamin Planet. That works out at 23p per 1 g, which ranks it 15th of the 15 L-Lysine products we price across 8 UK retailers.

What it really costs, per 1 g23pOne 1 g dose is our comparison unit for L-Lysine. It is not a recommendation.
A day23p
A week£1.61
A month£6.91
A year£84.07

At one 1 g dose a day, this pack lasts 3 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 1 g = 90 g
  • £20.73 ÷ 90 g × 1 g = 23p per 1 g
  • A week 23p × 7 = £1.61 · a month × 30 = £6.91 · a year × 365 = £84.07
  • 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-Lysine

All 15, ranked →
l-LysineHealf · 1 g a serving · £7.66 a month · a pack lasts 45 days26p£11.49View at Healf (opens in a new tab)
l-LysineHealf · 1 g a serving · £8.78 a month · a pack lasts 4 months29p£39.50View at Healf (opens in a new tab)
LysineHealf · 500 mg a serving · £11.88 a month · a pack lasts 30 days40p£11.88View at Healf (opens in a new tab)
L-LysineW-Wellness · 500 mg a serving · £14.99 a month · a pack lasts 30 days50p£14.99View at W-Wellness (opens in a new tab)
VimergyL-LysineHealf · 500 mg a serving · £17.67 a month · a pack lasts 45 days59p£26.50View at Healf (opens in a new tab)
QuestThis productVitamin Planet · 1 g a serving · £6.91 a month · a pack lasts 3 months23pshown above

Ranked purely by price per 1 g. 37 combination products also contain L-Lysine.

On the label

L-Lysine · L-Lysine
1 g per serving (stated on the label)
Pack
90 tablets · 90 servings · 1 tablet(s) a serving
Cost per serving
23p (90 servings in the pack)
More label details
Sold by
Vitamin Planet
What the listing says
“90 Tablets” · “L-Lysine 1000mg”
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One 1 g dose is our comparison unit, not a recommendation.

Price history

No price change since 7 October 2026. Checked on 1 day, most recently 7 October 2026.

Price at every check
£20.73Vitamin Planet
First recorded
£20.737 Oct
Checked on
1 daysince 7 Oct

Checked once so far, on 7 October 2026.

  1. First checked at Vitamin Planet: £20.73

Questions about this product

How much does Quest L-Lysine 1000mg cost per 1 g?

23p per 1 g, from £20.73 for 90 tablets at Vitamin Planet, checked on 7 October 2026.

Is it the cheapest L-Lysine in the UK?

No, it is 15th of 15. L-Lysine 1,000 mg at Healf works out at 8p per 1 g.

How long does one pack last?

3 months at one 1 g dose. The pack holds 90 g in total.

About Quest

All 15 Quest products, priced per dose

More from Quest

Keep comparing

All L-LysineEvery form, cheapest per 1 g firstL-Lysine guideWhat it is, why people take it, how the forms differQuestAll 15 products from this brand, per doseAmino acids & derivativesEverything else we price in this categoryL-Lysine price historyEvery L-Lysine 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