Best C8 MCT Oil for Ketosis

Do you want to take your keto supplementation to the next level?

Then you probably want to know how C8 MCT oil can help you and which is the best for You...

Best C8 MCT oil

Already convinced that you need a C8 MCT oil? Then check out our comparison chart and reviews of our best C8 MCT oils.


If you are not sure then you'd want to scroll down and have a look at what MCT and C8 oils are and how they support the ketogenic lifestyle...


If you are not interested in all this information and just want to know which is our favorite C8 supplement - then go straight here.

This post contains affiliate links. I earn a small commission from qualifying purchases made through these links. This is at no additional cost to you and helps me create this content.

Comparison Chart

Here is a summary of our 5 favorites...

Best Quality

Bulletproof Brain Octane Oil

  • Original Bulletproof C8 MCT oil 
  • 3 Size Options

Price - $$

Rating - 9.2/10

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for more info...

Best Value

Mickey T Eight

  • Low calorie C8 MCT oil
  • 99.07% Pure

Price - $

Rating - 9.1/10

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for more info...

Purest C8

Clean MCT

  • 99.2 to 99.6% pure C8
  • Available in glass bottle

Price - $

Rating - 9.0/10

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for more info...

Easy to Pour

C8 KetoMCT Oil

  • Easy to Pour
  • Well Priced
  • Doctor developed

Price - $

Rating - 9.1/10

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for more info...


Want to know more about these supplements?

Then carry on reading for a detailed breakdown of each...

Bulletproof - Brain Octane

Bulletproof is a famous brand in the world of keto, their name synonymous with butter coffee.

Bulletproof Brain Octane Oil is 100% pure caprylic acid triglycerides from coconut oil.

Bulletproof processes coconut oil using only water, heat, and pressure, to avoid adding chemicals, solvents, or unwanted ingredients.

Bulletproof does not use palm oil, to protect the orangutan habitat in Southeast Asia.


  • Brand recognition
  • Made in the USA
  • Sourced from organic, sustainable coconut plantations only
  • Free from harsh chemicals
  • Claims to be made from only C8
  • No unpleasant taste or smell
  • Recyclable, BPA-free bottles
  • Eligible for Amazon Prime


  • Bottle can be messy to pour, leading to wasteful spills
  • It is pricey

If you travel a lot, you'll be happy to know that you can buy your brain octane in a travel friendly 3 oz bottle.

Do you want to know what makes brain octane oil the market leader that it is?

Then read this article where bio hacker and founder of Bulletproof, Dave Asprey explain how it is made and how it compares with "normal" MCT oil...

MiCkey T Eight

MiCkey T Eight is a pure caprylic acid triglyceride oil, made from coconut and/or certified sustainable palm kernel oil.

They have published their Certificate of Analysis on Amazon, showing the actual chemical analysis of their product.

As per this certificate their product consist of 99.07% C8.

Interestingly MiCkey T Eight is slightly lower in calories per serving than other caprylic acid supplements.


  • Made in the USA
  • Made from coconut oil and sustainable palm oil
  • Extracted via steam and centrifugal force
  • Purity as per Certificate of Analysis - 99.07%
  • A delicate light, odorless, tasteless, and colorless oil
  • Packaged in BPA-free bottles
  • Eligible for Amazon Prime


  • Small company and this appears to be their only product
  • The lower calories per portion is odd

Clean MCT from LevelUp

Clean MCT is another gluten free, sugar free, lactose free, Non-GMO, halal and kosher pure MCT 8 oil that is made to support your ketogenic lifestyle.

It is extracted and filtered using a three-stage chemically free steam based process.

Like all pure C8 MCT oils, it is made to support metabolism when your body move from burning sugar as fuel to burning fat as fuel.

The oil is manufactured from coconut oil and or sustainably harvested palm oil.


  • Made in the USA
  • From coconut oil and sustainable harvested palm oil
  • Extracted via a steam based process
  • Purity as per the Questions and Answer section is between 99.2 and 99.6%
  • BPA-free plastic container as well as a glass bottle option
  • Discount coupons for buying additional LevelUp products (Always check product listings for additional discounts)
  • Eligible for Amazon Prime


  • Made from both coconut and palm oil, but no information on sourcing of ingredients

They prominently provide a warning not to use the oil in Styrofoam cups.

This warning is obviously important no matter which brand you choose as it is generally best to stay away from plastic products that can leach into hot beverages.

KetoMCT Premium C8 Caprylic Acid

KetoMCT pride themselves for their technical knowledge, their transparency and their attention to the quality of their supply chain.

This caprylic acid oil is made with sustainable palm kernel oil and coconut oil.

Their exact process of sourcing and manufacturing is clearly described here in an answer to a question on Amazon.


  • Made in USA
  • From sustainable palm kernel and coconut oil
  • Purity 99%
  • BPA-free bottle
  • Eligible for Amazon PrimeBulk discounts (These vary from time to time, but be sure to check their special offers)
  • 3 Oz TSA approved travel size available


  • None

Want to know more about the research supporting MCT and in particularly MCT C8 oil? Then check out their website for a summary of clinical trials.

MCT Oil vs C8

Medium-chain triglycerides (MCTs) are unique fats that are processed differently than the normal long-chain triglycerides in a conventional diet.

Long-chain triglycerides are broken down in the body by the gall bladder and enzymes in the pancreas before they are available to be converted to energy.

Medium-chain triglycerides are easier for the body to process, passing directly through the intestinal wall and then converted to ketones in the liver.

They are less likely to be stored as body fat, and boost metabolism and overall energy.

MCT oil is a useful supplement to reach the health state of ketosis.

Ketoers include MCT oils in their diet to achieve and maintain the state of ketosis necessary to enjoy the physical and mental benefits of a ketogenic diet.

By consuming MCT oils, the body has more energy and endurance, mental clarity and focus is increased, and the body is better able to reach and maintain a healthy weight.

All MCT's are valuable, but they are not all created equal.

Triglycerides are measured by the length of their carbon chain.

Long-chain fatty acids usually have 12 to 18 carbon atoms, while medium-chain fatty acids have 6 to 10.

The shorter the carbon chain, the easier the fat is for the body to process and make available to burn as energy. For that reason, a C6 oil should be desirable and healthy, but there is not currently a commercially available supplement of C6 MCTs.

C8 is the lowest carbon chain triglyceride that we are currently able to isolate in quantities sufficient to market. Pure 8-carbon or C8 MCT is also known as caprylic acid, and the terms are used interchangeably.

C8 MCT oils can be used in a variety of ways. Many Ketoers add it to their morning coffee, for sustained energy all the way until lunchtime.

They can also be blended into shakes and smoothies, stirred into yogurt, or used like conventional oil in salad dressings and sauces.

Keto - Change your fuel

Pure 8-carbon oil is the most effective of the MCT oils, but also the most expensive. If you are looking for a more affordable option, check out our review of C8 and C10 blends.

If you are still here, you are most likely wandering:

"Which C8 MCT oil supplement is best for me?"

That depends on your needs and your pocket. Check out the comparison chart above...


... if you just want to know which one is our favorite based on reputation - check it out now or our favorite based on value and price, then this is it.

How to Choose the Best C8 Supplement

When looking for a C8 MCT Oil supplement, it's important to read the ingredients carefully.

Just because a product is pure MCT oil does not mean it's made only with 8 carbon atoms.

Some MCT oils include other ingredients or additives that have carbohydrates. That doesn't mean they are bad products, and you can still enjoy the benefits of MCT oil.

But if you are looking for a C8 supplement to complement a keto lifestyle, it's important to read the label.

Remember that not all MCT oils are C8 MCT oils. Most are a blend of C8 and C10.

The best C8 MCT supplements are made from coconut and/or palm oils and nothing else.

Some products may have additional healthy ingredients that might appeal to or benefit you, enhancing the blend in other ways, but for the purposes of this review, we focus on pure C8 MCT oils.

What to Look for in a Good C8 MCT Oil

The best C8 MCT oils are organic, sustainable, responsibly sourced, and responsibly packaged.

Not every product will meet all these criteria, but it's good to keep in mind when comparing products.

Note on palm oil: palm oil is healthy and natural, and a good source of C8 MCTs.

However, the way in which it is currently produced and harvested has had a devastating environmental impact on many regions of the world, leading to widespread deforestation and threatening many species.

While there is a movement underway to reform the industry to be more responsible, there are not yet widespread good practices in place for conscious, sustainable palm oil harvesting.

For that reason, many companies choose not to use it in their MCT oil products.

If these issues are important to you, you may choose to avoid palm oil as well, or be attentive to whether the palm oil source is certified sustainable.

A good MCT C8 oil will be more pricey than a blend. It will convert into energy faster and is the most effective of the MCT oils.

It is important to take them regularly, so price is of concern, then consider this well priced blend.


As we have seen, there are a wide variety of C8 MCT oils available on the marketplace, and many of them are products with pure ingredients and free shipping.

Furthermore, on a per-serving basis, many of them are in a very similar price range.

All of them include the benefits of daily, ongoing use of MCT C8 oils, including greater mental clarity and focus, sustained energy and suppressed appetite, enhanced metabolism, and decreased body fat storage.

These oils are beneficial for everyone, even if they don't adopt other elements of the keto lifestyle.

So, you have a variety of products to choose from, and the ultimate decision may come down to factors like company reputation, ingredient sourcing, or transparency and communication.

Other factors may play a role as well, like simple matters of taste and preference. One may have better packaging, or a flavor or texture that you prefer, or be easier to pour or more convenient to order.

Ultimately, there is no single best C8 MCT oil supplement for everyone.

What matters most is that you choose the products you like best, and enjoy all the physical and mental benefits of the keto lifestyle.

At this time, my choice is Brain Octane Oil, even though it is the most pricey.

However, I don't use it every day. Some days I add coconut oil to my coffee and other days a C8 and C10 blend.

This may not necessarily be the most effective use of these oils, but it works for me and I don't like to do the same thing every day. 🙂

This post contains affiliate links. I earn a small commission from qualifying purchases made through these links. This is at no additional cost to you and helps me create this content.


Noline is a therapeutic reflexologist who converted to the keto lifestyle after losing 55 pounds without counting calories or starving herself. She is a Professor Tim Noakes and the Nutrition Network student and feels compelled to share the low-carb lifestyle with as many people as possible. She does this at Essential Keto, where she shares resources, recipes, and experiences while working on losing that last 10 pounds.

John - March 12, 2018

Your bulletproof link goes to their XCT oil, which is NOT all c8. It does not link to the brain octane product which is c8 but also double the price.

    Noline - March 22, 2018

    Hey John, thank you for bringing the incorrect link to my attention. I fixed it.

    I agree it is expensive. That is why it is my first choice based on brand reputation, but based on value for money my favorite is the KetoMCT C8 oil.

    I really appreciate that you took the time to let me know about the link.

    Keep well, Noline

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