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Caffeine

Also called caffeine anhydrous.

The best price per 200 mg and per month, form by form, across 4 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.

Comparing caffeine

We count the caffeine a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. Products that combine caffeine with other ingredients are listed separately, because their price buys more than caffeine. 200 mg is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.

Caffeine

Prices last checked: . Ranked purely by price per 200 mg — a comparison unit, not a recommendation. We earn commission when you buy through these links; it never affects the order.

Compared at 200 mg. Enter the amount you take to see your own costs.

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Caffeine, Caffeine: products ranked by price per 200 mg
RankProductPer 200 mgPer monthLastsBuyHow it is worked out
1
Bulk Caffeine 200mg
Cheapest per doseCaffeine 200mg250 tablets · 250 servings · 200 mg a servingDetails and price historyAdd to my stack
5p£1.388 months£11.49View at Bulk (opens in a new tab)Free delivery over £49.00, otherwise £3.95AmazonFind 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 × 200 mg = 50 g
  • £11.49 ÷ 50 g × 200 mg = 4.6p per 200 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “250 Tablets”
  • units per serving “Per Serving (1 Tablet)”
  • amount per serving “[Caffeine ; 200mg]”

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2
Bulk Caffeine 200mg
Best value under 6 months' supplyCaffeine 200mg100 tablets · 100 servings · 200 mg a servingDetails and price historyAdd to my stack
5p£1.503 months£4.99View at Bulk (opens in a new tab)Free delivery over £49.00, otherwise £3.95AmazonFind 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 × 200 mg = 20 g
  • £4.99 ÷ 20 g × 200 mg = 4.99p per 200 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “100 Tablets”
  • units per serving “Per Serving (1 Tablet)”
  • amount per serving “[Caffeine ; 200mg]”

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3
Myprotein Pure Caffeine Tablets
Pure Caffeine Tablets200 tablets · 200 servings · 200 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
6p£1.957 months£12.99View 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: 200 ÷ 1 per serving = 200
  • In the pack: 200 × 200 mg = 40 g
  • £12.99 ÷ 40 g × 200 mg = 6.5p per 200 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “200Tablets”
  • units per serving “Per Daily Serving ; 1 Tablet”
  • amount per serving “Caffeine ; 200.0mg”

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4
Myprotein Pure Caffeine Tablets
Pure Caffeine Tablets100 tablets · 100 servings · 200 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
7p£2.103 months£6.99View 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: 100 ÷ 1 per serving = 100
  • In the pack: 100 × 200 mg = 20 g
  • £6.99 ÷ 20 g × 200 mg = 6.99p per 200 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “100Tablets”
  • units per serving “Per Daily Serving ; 1 Tablet”
  • amount per serving “Caffeine ; 200.0mg”

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5
WeightWorld Pure Guarana Capsules
Pure Guarana CapsulesWeightWorld · 90 servings · 132 mg a servingDetails and price historyAdd to my stack
17p£5.0559 days£9.99View at WeightWorld (opens in a new tab)Free delivery over £35.00, otherwise £1.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 (as stated on the label)
  • In the pack: 90 × 132 mg = 11.9 g
  • £9.99 ÷ 11.9 g × 200 mg = 16.8p per 200 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • servings stated “Servings per Container: 90”
  • units per serving “Serving Size: 2 Capsules”
  • amount per serving “Contains Caffeine (132mg Per Serving)”

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6
Applied Nutrition Endurance Caffeine Capsules 100mg
Endurance Caffeine Capsules 100mg90 capsules · 90 servings · 100 mg a servingDetails and price historyAdd to my stackclaimed: vegetarian
38p£11.3045 days£16.95View at Applied Nutrition (opens in a new tab)Free delivery over £45.00, otherwise £4.49AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 100 mg = 9 g
  • £16.95 ÷ 9 g × 200 mg = 37.7p per 200 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • units per serving “Consume 1 capsule”
  • confirmed values “confirmed from the retailer's own product page, not this listing's text: form id caffeine; amount per serving 100.0; amount unit mg; amount refers to compound; units per serving 1.0; pack units 90; pack unit type capsule”

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How we work out these prices

We count the amount of caffeine per serving as stated on the label.

Questions

Where can I buy caffeine cheapest in the UK?

On 20 October 2026, the cheapest caffeine per dose from a UK seller was Caffeine 200mg at Bulk (5p per 200 mg, £1.38 a month). Then Caffeine 200mg at Bulk (5p per 200 mg, £1.50 a month) and Pure Caffeine Tablets at Myprotein (6p per 200 mg, £1.95 a month). That is by price per 200 mg, across 4 UK retailers and 6 products, with every price checked daily; the table above shows the working for each.

What is the best price per 200 mg of caffeine today?

5p per 200 mg, for Caffeine 200mg at Bulk (5p per 200 mg, £1.38 a month), on 20 October 2026. The dearest of the 6 products we price is 38p per 200 mg, and the middle one is 7p.

How much does caffeine cost per month?

At one 200 mg dose a day, the cheapest works out at £1.38 a month, for Caffeine 200mg at Bulk, on 20 October 2026. Across the 6 products we price it runs from £1.38 to £11.30 a month. A month is 30 days, and the figure follows the dose you enter in the table.

Do bigger caffeine packs cost less per dose?

Mostly, yes: on 20 October 2026, the 2 packs that last more than six months average 6p per 200 mg, against 17p for the 4 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 caffeine last?

At one 200 mg dose a day, the packs we price last from 45 days to 8 months; the middle one lasts 3 months. Each row says how long its pack lasts at the dose you enter.

What does “per 200 mg” mean?

It is the unit we use to put every product on the same scale: the price of 200 mg of caffeine, 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.