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L-Lysine

Also called lysine, lysine hcl, lysine hydrochloride.

The best price per 1 g and per month, form by form, across 8 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.

Comparing L-Lysine

We count the L-lysine a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. Products that combine L-Lysine with other ingredients are listed separately, because their price buys more than L-lysine. 1 g is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.

L-Lysine

Prices last checked: . Ranked purely by price per 1 g — a comparison unit, not a recommendation. We earn commission when you buy through these links; it never affects the order.

Compared at 1,000 mg. Enter the amount you take to see your own costs.

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L-Lysine, L-Lysine: products ranked by price per 1 g
RankProductPer 1 gPer monthLastsBuyHow it is worked out
1
NOW Foods L-Lysine 1,000 mg
Cheapest per doseL-Lysine 1,000 mgHealf · 250 tablets · 250 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: vegetarian
8p£2.528 months£20.99View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 250 ÷ 1 per serving = 250
  • In the pack: 250 × 1 g = 250 g
  • £20.99 ÷ 250 g × 1 g = 8.4p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “250 tabs”
  • units per serving “Serving Size: 1 Tablet”
  • amount per serving “L-Lysine Hydrochloride) ; 1000 mg”
  • compound mass “from 1,270 mg L-Lysine Hydrochloride”

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2
NOW Foods L-Lysine 1,000 mg
Best value under 6 months' supplyL-Lysine 1,000 mgHealf · 100 tablets · 100 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: vegetarian
9p£2.613 months£8.70View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 100 ÷ 1 per serving = 100
  • In the pack: 100 × 1 g = 100 g
  • £8.70 ÷ 100 g × 1 g = 8.7p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “100 tabs”
  • servings stated “Servings Per Container: 100”
  • units per serving “Serving Size: 1 Tablet”
  • amount per serving “L-Lysine Hydrochloride) ; 1000 mg”
  • compound mass “from 1,270 mg L-Lysine Hydrochloride”

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3
ZipVit L-Lysine Hydrochloride 1100mg
L-Lysine Hydrochloride 1100mgZipVit · 180 tablets · 180 servings · 1.1 g a servingDetails and price historyAdd to my stack
9p£2.657 months£17.49View at ZipVit (opens in a new tab)Free deliveryAmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 180 ÷ 1 per serving = 180
  • In the pack: 180 × 1.1 g = 198 g
  • £17.49 ÷ 198 g × 1 g = 8.83p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “1100mg - 180. 6 months supply”
  • units per serving “Take 1 tablet daily”
  • amount per serving “L-Lysine ; 1100mg”

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4
ZipVit L-Lysine Hydrochloride 1100mg
L-Lysine Hydrochloride 1100mgZipVit · 90 tablets · 90 servings · 1.1 g a servingDetails and price historyAdd to my stack
9p£2.723 months£8.99View at ZipVit (opens in a new tab)Free deliveryAmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 1.1 g = 99 g
  • £8.99 ÷ 99 g × 1 g = 9.08p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “1100mg - 90. 3 months supply”
  • units per serving “Take 1 tablet daily”
  • amount per serving “L-Lysine ; 1100mg”

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5
Nature's Best L-Lysine 1000mg - Essential Amino Acid
L-Lysine 1000mg - Essential Amino Acid90 tablets · 90 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
9p£2.833 months£8.50View at Lamberts Healthcare (Nature's Best) (opens in a new tab)Free delivery over £20.00, otherwise £2.50AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 1 g = 90 g
  • £8.50 ÷ 90 g × 1 g = 9.44p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “Specifications: 90 Tablets”
  • amount per serving “1,000mg of lysine per vegan tablet”

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6
SOLGAR L-Lysine 1000mg
L-Lysine 1000mgHealf · 50 tablets · 50 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
16p£4.7950 days£7.99View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 50 ÷ 1 per serving = 50
  • In the pack: 50 × 1 g = 50 g
  • £7.99 ÷ 50 g × 1 g = 16p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “50 tablets”
  • units per serving “Each tablet provides”
  • amount per serving “L-Lysine ; 1000 mg”

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7
Natures Aid L-Lysine 1000mg 60 Tablets
L-Lysine 1000mg 60 TabletsNatures Aid · Lloyds Pharmacy · 60 tablets · 60 servings · 1 g a servingDetails and price historyAdd to my stack
18p£5.452 months£10.91View at Lloyds Pharmacy (opens in a new tab)Free delivery over £30.00, otherwise £2.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 60 ÷ 1 per serving = 60
  • In the pack: 60 × 1 g = 60 g
  • £10.91 ÷ 60 g × 1 g = 18.2p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “60 Tablets”
  • units per serving “Take 1 tablet per day”
  • amount per serving “L-Lysine 1000mg”

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8
Myprotein L-Lysine Tablets - Unflavoured
L-Lysine Tablets - Unflavoured60 tablets · 30 servings · 1 g a servingDetails and price historyAdd to my stackUnflavouredclaimed: veganclaimed: vegetarian
18p£5.4930 days£5.49View at Myprotein (opens in a new tab)Free delivery over £55.00, otherwise £4.49AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 60 ÷ 2 per serving = 30
  • In the pack: 30 × 1 g = 30 g
  • £5.49 ÷ 30 g × 1 g = 18.3p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “60 tablets”
  • servings stated “30servings”
  • units per serving “Consume 2 tablets as a daily serving”
  • amount per serving “L-Lysine ; 1000.0mg”

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9
Higher Nature Lysine
LysineHigher Nature · 90 tablets · 45 servings · 1 g a servingDetails and price historyAdd to my stack
25p£7.6345 days£11.45View at Higher Nature (opens in a new tab)Free delivery over £40.00, otherwise £3.90AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 2 per serving = 45
  • In the pack: 45 × 1 g = 45 g
  • £11.45 ÷ 45 g × 1 g = 25.4p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “90 Tablets”
  • units per serving “Two tablets typically provide”
  • amount per serving “L-lysine hydrochloride ; 1000mg”

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10
Pure Encapsulations l-Lysine
l-LysineHealf · 90 capsules · 45 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: vegetarian
26p£7.6645 days£11.49View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 2 per serving = 45
  • In the pack: 45 × 1 g = 45 g
  • £11.49 ÷ 45 g × 1 g = 25.5p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “90 capsules”
  • servings stated “Servings per container 45”
  • units per serving “Serving size 2 capsules”
  • amount per serving “L-lysine HCl (free-form) ; 1,000 mg”

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11
Pure Encapsulations l-Lysine
l-LysineHealf · 270 capsules · 135 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: vegetarian
29p£8.784 months£39.50View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 270 ÷ 2 per serving = 135
  • In the pack: 135 × 1 g = 135 g
  • £39.50 ÷ 135 g × 1 g = 29.3p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “270 capsules”
  • units per serving “Serving size 2 capsules”
  • amount per serving “L-lysine HCl (free-form) ; 1,000 mg”

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12
Thorne Lysine
LysineHealf · 60 capsules · 60 servings · 500 mg a servingDetails and price historyAdd to my stack
40p£11.8830 days£11.88View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 60 ÷ 1 per serving = 60
  • In the pack: 60 × 500 mg = 30 g
  • £11.88 ÷ 30 g × 1 g = 39.6p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “60 caps”
  • servings stated “Servings Per Container: 60”
  • units per serving “Serving Size: 1 Capsule”
  • amount per serving “L-Lysine (as L-Lysine Monohydrochloride) ; 500 mg”

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13
Cytoplan L-Lysine
L-LysineW-Wellness · 60 capsules · 60 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: vegan
50p£14.9930 days£14.99View at W-Wellness (opens in a new tab)Free delivery from £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 60 ÷ 1 per serving = 60
  • In the pack: 60 × 500 mg = 30 g
  • £14.99 ÷ 30 g × 1 g = 50p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “Contains: 60 capsules”
  • amount per serving “Each easy-to-take capsule provides 500mg of high-quality L-Lysine”

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14
Vimergy L-Lysine
VimergyL-LysineHealf · 90 capsules · 90 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
59p£17.6745 days£26.50View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 500 mg = 45 g
  • £26.50 ÷ 45 g × 1 g = 58.9p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “90 caps”
  • servings stated “Servings Per Container: 90”
  • units per serving “Serving Size: 1 Capsule”
  • amount per serving “L-Lysine HCl ; 500 mg”

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15
Quest L-Lysine 1000mg
L-Lysine 1000mgQuest · Vitamin Planet · 90 tablets · 90 servings · 1 g a servingDetails and price historyAdd to my stackOut of stock
23p£6.913 months£20.73View at Vitamin Planet (opens in a new tab)Delivery £3.95AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 1 g = 90 g
  • £20.73 ÷ 90 g × 1 g = 23p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “90 Tablets”
  • amount per serving “L-Lysine 1000mg”

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By shop

Each shop's L-Lysine products, with where its cheapest sits in the market.

How we work out these prices

We count the amount of L-lysine per serving as stated on the label.

Questions

Where can I buy L-Lysine cheapest in the UK?

On 20 October 2026, the cheapest L-Lysine per dose from a UK seller was L-Lysine 1,000 mg at Healf (8p per 1 g, £2.52 a month). Then L-Lysine 1,000 mg at Healf (9p per 1 g, £2.61 a month) and L-Lysine Hydrochloride 1100mg at ZipVit (9p per 1 g, £2.65 a month). That is by price per 1 g, across 8 UK retailers and 15 products, with every price checked daily; the table above shows the working for each.

What is the best price per 1 g of L-Lysine today?

8p per 1 g, for L-Lysine 1,000 mg at Healf (8p per 1 g, £2.52 a month), on 20 October 2026. The dearest of the 15 products we price is 59p per 1 g, and the middle one is 18p.

How much does L-Lysine cost per month?

At one 1 g dose a day, the cheapest works out at £2.52 a month, for L-Lysine 1,000 mg at Healf, on 20 October 2026. Across the 15 products we price it runs from £2.52 to £17.67 a month. A month is 30 days, and the figure follows the dose you enter in the table.

Do bigger L-Lysine packs cost less per dose?

Mostly, yes: on 20 October 2026, the 2 packs that last more than six months average 9p per 1 g, against 25p for the 13 that last six months or less. The table marks the cheapest pack that lasts six months or less as the best value for anyone who would rather not buy a year at once.

How long does a pack of L-Lysine last?

At one 1 g dose a day, the packs we price last from 30 days to 8 months; the middle one lasts 2 months. Each row says how long its pack lasts at the dose you enter.

What does “per 1 g” mean?

It is the unit we use to put every product on the same scale: the price of 1 g of L-lysine, whatever the pack size or serving size. It is a comparison unit, not a recommendation of how much to take. Use the “Your daily dose” box to see costs at the amount you actually take.

Why is a product I have seen in the shops missing?

If a retailer’s listing does not let us confirm the amount per serving, the pack size or the form, we do not guess and we do not show the product. It appears once its label has been read and confirmed.

How up to date are the prices?

Prices on this page were last checked on 20 October 2026. Every table shows the date its prices were checked. Always confirm the price on the retailer’s site before buying.

Do retailers pay to appear higher?

No. We earn a commission when you buy through our links, but the order is set only by price per dose. No retailer or brand can pay for position.