MCT oil
Also called mct, medium chain triglycerides, caprylic acid and 2 more
C8 oil, C8 mct.
The best price per 10 g MCT (C8 + C10) and per month, form by form, across 3 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.
Comparing MCT oil
We count the MCT (C8 + C10) a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. MCT oil comes as MCT oil (C8 + C10) and pure C8 (caprylic), 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 MCT oil with other ingredients are listed separately, because their price buys more than MCT (C8 + C10). 10 g is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.
MCT oil Pure C8 (caprylic)
| Rank | Product | Per 10 g MCT (C8 + C10) | Per month | Lasts | Buy | How it is worked out |
|---|---|---|---|---|---|---|
| 1 | ![]() Cheapest per doseBest value under 6 months' supplyBrain Octane C8 MCT Oil - Bottle - 32 fl. ozDetails and price historyAdd to my stack | 53p | £15.98 | 3 months | £46.99View 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
What the retailer's listing says
|
| 2 | ![]() Cheapest per doseBest value under 6 months' supplyKeto C8 MCT PowderDetails and price historyAdd to my stack | £1.15 | £34.57 | 31 days | £35.49View 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
What the retailer's listing says
|
| 3 | ![]() Cheapest per doseBest value under 6 months' supplyKeto C8 MCT PowderDetails and price historyAdd to my stack | £1.27 | £37.97 | 15 days | £19.49View 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
What the retailer's listing says
|
| 4 | ![]() Cheapest per doseBest value under 6 months' supplyBrain Octane® C8 MCT PowderDetails and price historyAdd to my stackUnflavoured | £1.73 | £51.85 | 16 days | £27.99View 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
What the retailer's listing says
|
| 5 | ![]() Cheapest per doseBest value under 6 months' supplyBrain Octane C8 MCT Oil - SoftgelsDetails and price historyAdd to my stack | £2.74 | £82.25 | 6 days | £16.45View 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
What the retailer's listing says
|
| + | ![]() Cheapest per doseBest value under 6 months' supplyCandida Support CapsulesDetails and price historyAdd to my stackCombination: price counts the mct oil onlyalso contains garlic, quercetin, glucosamine… | £9.51 | £285.41 | 2 days | £16.89View 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
What the retailer's listing says
|
| + | ![]() Cheapest per doseBest value under 6 months' supplyCoQ10 EnergyDetails and price historyAdd to my stackCombination: price counts the mct oil onlyalso contains coq10, pqq | £47.77 | £1433.00 | under a day | £42.99View 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
What the retailer's listing says
|
Only combination products for this form
The 2 products here contain mct oil alongside other ingredients, so they are not ranked against single-ingredient products. Their price per dose counts the mct oil only.
By shop
Each shop's MCT oil products, with where its cheapest sits in the market.
How we work out these prices
We count MCT (C8 + C10) — the components stated on the label — not the weight of the oil. A 1,000 mg capsule of oil can contain very different amounts of MCT (C8 + C10). Products that state only the oil weight are left out until the content is confirmed.
Questions
Where can I buy MCT oil cheapest in the UK?
On 20 October 2026, the cheapest MCT oil per dose from a UK seller was Brain Octane C8 MCT Oil - Bottle - 32 fl. oz at Healf (53p per 10 g MCT (C8 + C10), £15.98 a month). Then Keto C8 MCT Powder at Healf (£1.15 per 10 g MCT (C8 + C10), £34.57 a month) and Keto C8 MCT Powder at Healf (£1.27 per 10 g MCT (C8 + C10), £37.97 a month). That is by price per 10 g MCT (C8 + C10), across 1 UK retailer and 5 products, with every price checked daily; the table above shows the working for each.
What is the best price per 10 g MCT (C8 + C10) of MCT oil today?
53p per 10 g MCT (C8 + C10), for Brain Octane C8 MCT Oil - Bottle - 32 fl. oz at Healf (53p per 10 g MCT (C8 + C10), £15.98 a month), on 20 October 2026. The dearest of the 5 products we price is £2.74 per 10 g MCT (C8 + C10), and the middle one is £1.27.
How much does MCT oil cost per month?
At one 10 g dose a day, the cheapest works out at £15.98 a month, for Brain Octane C8 MCT Oil - Bottle - 32 fl. oz at Healf, on 20 October 2026. Across the 5 products we price it runs from £15.98 to £82.25 a month. A month is 30 days, and the figure follows the dose you enter in the table.
Which MCT oil form is cheapest per dose?
On 20 October 2026: MCT oil (C8 + C10) from 41p per 10 g MCT (C8 + C10) (Holland & Barrett) and pure C8 (caprylic) from 53p per 10 g MCT (C8 + C10) (Healf). 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 MCT oil last?
At one 10 g dose a day, the packs we price last from 6 days to 3 months; the middle one lasts 16 days. Each row says how long its pack lasts at the dose you enter.
What does “per 10 g MCT (C8 + C10)” mean?
It is the unit we use to put every product on the same scale: the price of 10 g of MCT (C8 + C10), 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 mct oil 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: MCT oil (C8 + C10); Pure C8 (caprylic).
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.







