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L-Carnitine

Also called carnitine, L-carnitine tartrate, L-carnitine l-tartrate and 5 more

lclt, carnipure, acetyl-l-carnitine, acetyl l-carnitine, alcar.

The best price per 1 g L-carnitine and per month, form by form, across 6 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.

Comparing L-Carnitine

We count the L-carnitine a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. L-Carnitine comes as L-Carnitine, L-Carnitine tartrate and acetyl-L-carnitine (ALCAR), and each form has its own table, because someone buying one would not usually take another as a like-for-like substitute. Products that combine L-Carnitine with other ingredients are listed separately, because their price buys more than L-carnitine. 1 g is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.

Acetyl-L-carnitine (ALCAR)

Prices last checked: . Ranked purely by price per 1 g L-carnitine — 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-Carnitine, Acetyl-L-carnitine (ALCAR): products ranked by price per 1 g L-carnitine
RankProductPer 1 g L-carnitinePer monthLastsBuyHow it is worked out
1
Myprotein L Carnitine Amino Acid Powder
Cheapest per doseL Carnitine Amino Acid Powder500 g · 1,000 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
10p£3.031.4 years£50.49View 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: 500 ÷ 0.5 per serving = 1000
  • In the pack: 1000 × 500 mg = 500 g
  • £50.49 ÷ 500 g × 1 g = 10.1p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “500g”
  • units per serving “Per 500mg Serving”
  • L-carnitine “of which L-Carnitine ; 340.0mg”
  • amount per serving “N-Acetyl-L-Carnitine HCl ; 500.0mg”

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2
Simply Supplements Acetyl L-Carnitine Capsules 500mg
Best value under 6 months' supplyAcetyl L-Carnitine Capsules 500mg60 capsules · 60 servings · 500 mg a servingDetails and price historyAdd to my stack
50p£14.9930 days£14.99View at Simply Supplements (opens in a new tab)Free delivery from £20.00, otherwise £1.99AmazonFind 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
  • amount per serving “Acetyl L-Carnitine Capsules 500mg”
  • confirmed values “confirmed from the retailer's own product page, not this listing's text: pack units 60; pack unit type capsule; units per serving 1.0”

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3
Designs For Health Acetyl L-Carnitine
Designs for HealthAcetyl L-CarnitineHealf · 90 capsules · 90 servings · 800 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarianclaimed: gluten-free
58p£17.502 months£41.99View 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: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 800 mg = 72 g
  • £41.99 ÷ 72 g × 1 g = 58.3p 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: 90”
  • units per serving “Serving Size: 1 Capsule”
  • amount per serving “Acetyl L-Carnitine HCl ; 800 mg”

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4
Nature's Best Acetyl L-Carnitine 500mg - Supports Nerve Health & Cognitive Function
Acetyl L-Carnitine 500mg - Supports Nerve Health & Cognitive Function60 capsules · 60 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
67p£19.9530 days£19.95View 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: 60 ÷ 1 per serving = 60
  • In the pack: 60 × 500 mg = 30 g
  • £19.95 ÷ 30 g × 1 g = 66.5p per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “Specifications: 60 Capsules”
  • units per serving “take one capsule daily with water”
  • amount per serving “Acetyl L-Carnitine 500mg”

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5
Codeage Liposomal Acetyl L-Carnitine+
Liposomal Acetyl L-Carnitine+Healf · 90 capsules · 90 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: vegan
70p£21.1445 days£31.71View 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
  • £31.71 ÷ 45 g × 1 g = 70.5p 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: 90”
  • units per serving “Serving Size: 1 Capsule”
  • amount per serving “Acetyl-L-Carnitine Chloride) ; 500 mg”

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6
Thorne Acetyl-L-Carnitine
Acetyl-L-CarnitineHealf · 60 capsules · 60 servings · 500 mg a servingDetails and price historyAdd to my stack
86p£25.8930 days£25.89View 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
  • £25.89 ÷ 30 g × 1 g = 86.3p 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 “Acetyl-L-Carnitine Chloride) ; 500 mg”

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7
Momentous Acetyl L-Carnitine
Acetyl L-CarnitineHealf · 60 servings · 500 mg a servingDetails and price historyAdd to my stack
£1.08£32.4930 days£32.49View 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: 60 (as stated on the label)
  • In the pack: 60 × 500 mg = 30 g
  • £32.49 ÷ 30 g × 1 g = £1.08 per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • servings stated “Servings Per Container: 60”
  • units per serving “Serving Size: 1 Capsule”
  • amount per serving “Acetyl L-Carnitine (as Acetyl L-Carnitine HCl) ; 500 mg”

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8
HealthAid Acetyl-L-Carnitine 550mg
Acetyl-L-Carnitine 550mgHealthAid · Vitamin Planet · 30 tablets · 30 servings · 550 mg a servingDetails and price historyAdd to my stackclaimed: vegetarianclaimed: gluten-free
£1.27£38.0917 days£20.95View 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: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 550 mg = 16.5 g
  • £20.95 ÷ 16.5 g × 1 g = £1.27 per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “30 Tablets”
  • amount per serving “Acetyl-L-Carnitine 550mg”

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9
Biocare Acetyl Carnitine & Alpha Lipoic Acid
Acetyl Carnitine & Alpha Lipoic AcidHealf · 30 capsules · 30 servings · 300 mg a servingDetails and price historyAdd to my stackalso contains alpha lipoic acid
£3.71£111.179 days£33.35View 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: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 300 mg = 9 g
  • £33.35 ÷ 9 g × 1 g = £3.71 per 1 g
  • Amount per serving: stated on the label.
  • Also contains: alpha lipoic acid. The price counts the l-carnitine only.
What the retailer's listing says
  • pack units “30 caps”
  • units per serving “per daily intake: 1 capsule”
  • amount per serving “N-Acetyl Carnitine ; 300mg”

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10
Pure Encapsulations Acetyl-L-Carnitine 500 mg
Acetyl-L-Carnitine 500 mgHealf · 60 capsules · 60 servings · 250 mg a servingDetails and price historyAdd to my stackclaimed: vegetarian
£3.81£114.2015 days£57.10View 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 × 250 mg = 15 g
  • £57.10 ÷ 15 g × 1 g = £3.81 per 1 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “60 capsules”
  • servings stated “Servings Per Container: 60”
  • units per serving “Serving Size: 1 capsule”
  • amount per serving “Acetyl-L-Carnitine HCl ; 250 mg”

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By shop

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

How we work out these prices

We count the L-carnitine a product provides, not the weight of the whole compound it comes in. If a label states the L-carnitine amount, we use it. If it only gives the compound's weight, we estimate using a published conversion factor and mark the figure “estimated”. If we cannot tell which the number means, the product is left out until it can be confirmed.

Conversion factor used when only the compound weight is given: acetyl-l-carnitine 100.0%. How we chose these.

Questions

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

On 20 October 2026, the cheapest L-Carnitine per dose from a UK seller was L Carnitine Amino Acid Powder at Myprotein (10p per 1 g L-carnitine, £3.03 a month). Then Acetyl L-Carnitine Capsules 500mg at Simply Supplements (50p per 1 g L-carnitine, £14.99 a month) and Acetyl L-Carnitine at Healf (58p per 1 g L-carnitine, £17.50 a month). That is by price per 1 g L-carnitine, across 5 UK retailers and 10 products, with every price checked daily; the table above shows the working for each.

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

10p per 1 g L-carnitine, for L Carnitine Amino Acid Powder at Myprotein (10p per 1 g L-carnitine, £3.03 a month), on 20 October 2026. The dearest of the 10 products we price is £3.81 per 1 g L-carnitine, and the middle one is 78p.

How much does L-Carnitine cost per month?

At one 1 g dose a day, the cheapest works out at £3.03 a month, for L Carnitine Amino Acid Powder at Myprotein, on 20 October 2026. Across the 10 products we price it runs from £3.03 to £114.20 a month. A month is 30 days, and the figure follows the dose you enter in the table.

Which L-Carnitine form is cheapest per dose?

On 20 October 2026: acetyl-L-carnitine (ALCAR) from 10p per 1 g L-carnitine (Myprotein), L-Carnitine from 15p per 1 g L-carnitine (Myprotein) and L-Carnitine tartrate from 29p per 1 g L-carnitine (WeightWorld). The forms differ in what they contain, so this is a fact about price and not a recommendation of one over another.

How long does a pack of L-Carnitine last?

At one 1 g dose a day, the packs we price last from 9 days to 1.4 years; the middle one lasts 30 days. Each row says how long its pack lasts at the dose you enter.

What does “per 1 g L-carnitine” mean?

It is the unit we use to put every product on the same scale: the price of 1 g of L-carnitine, 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 are the l-carnitine forms in separate tables?

We only rank products against others of the same form, because someone buying one form would not usually see another as a like-for-like substitute on price. Forms we compare separately: L-Carnitine; L-Carnitine tartrate; Acetyl-L-carnitine (ALCAR).

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.