Bulletproof Brain Octane C8 MCT Oil, 16 oz – 100% Pure Coconut Oil, Triple-Distilled Keto Energy Supplement for Coffee & Smoothies, Unflavored, No Additives or Fillers, Non-GMO
$0.92/serving
Price verified Apr 22, 2026
Not evaluated by the FDA · Individual results may vary · Consult a healthcare provider before use
Our verdict
14g pure C8 per tablespoon of 100% C8 Caprylic Acid MCT Oil per liquid from Bulletproof. Best for maximum ketone production and cognitive performance.
Why we recommend this
The gold standard for pure C8 MCT oil. Triple-distilled from 100% coconut oil to isolate caprylic acid, which converts to ketones 3x faster than standard coconut oil. No C10 or C12 dilution means every serving delivers peak ketone output.
Check for interactions
Already taking other supplements or prescription medications? Add them below to check for documented interactions, severity, and clinical guidance.
Our database currently documents 137+ supplement and drug-category interaction pairs. Combinations not flagged here may still interact — always consult your healthcare provider before combining supplements, especially with prescription medications.
What to watch out for
Premium price point at ~$25 for 16oz. Not USDA Organic certified. Plastic bottle.
Dose & form
- Serving
- 14g pure C8 per tablespoon
- Form
- Liquid
- Clinical range
- 15-30ml (1-2 tablespoons) daily
- Dose adequacy
- Blend
- Supply
- 30 servings · $0.92/serving
- UPC
- 815709020941
Who it's best for
Maximum ketone production and cognitive performance
Who should skip it
Budget shoppers or those who prefer organic certification
Pros
- 100% pure C8 caprylic acid — fastest ketone conversion
- Triple-distilled for maximum purity
- Third-party tested for contaminants
- Flavorless and odorless — mixes into any beverage
Cons
- Premium price (~$0.52/tbsp)
- Not USDA Organic certified
- 16oz bottle is smaller than competitors
- Plastic packaging
What customers say
4.6★ across 30,890 Amazon reviews. The most common questions from shoppers: re any potential interactions with medications, re any side effects from long-term use, and cause any digestive issues or side effects. Full answers in the FAQ below.
Frequently Asked Questions
What is the clinical dose for 100% C8 Caprylic Acid MCT Oil?
What is the clinical dose for 100% C8 Caprylic Acid MCT Oil?
Clinical trials typically use 15-30ml (1-2 tablespoons) daily. Bulletproof Brain Octane C8 MCT Oil delivers 14g pure C8 per tablespoon, which we classify as Blend relative to that range.
How does Bulletproof Brain Octane C8 MCT Oil compare to similar Liquid?
How does Bulletproof Brain Octane C8 MCT Oil compare to similar Liquid?
See the "Also consider" section below for two alternatives. Choose based on form preference (Liquid vs alternatives), dose adequacy, and third-party testing.
Is Bulletproof Brain Octane C8 MCT Oil third-party tested?
Is Bulletproof Brain Octane C8 MCT Oil third-party tested?
Yes — Third-Party Tested (Triple-Distilled). Third-party testing verifies ingredient identity and label accuracy.
Does this work with Amazon Subscribe & Save?
Does this work with Amazon Subscribe & Save?
Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.
Are there any potential interactions with medications?
Are there any potential interactions with medications?
Bulletproof Brain Octane C8 MCT Oil contains 100% C8 Caprylic Acid MCT Oil. As with any mct oil supplement, consult your healthcare provider if you take prescription medications, especially blood thinners, blood pressure medications, or immunosuppressants. Bulletproof recommends consulting a doctor before use if you are on medication.
Are there any side effects from long-term use?
Are there any side effects from long-term use?
At 14g pure C8 per tablespoon, Bulletproof Brain Octane C8 MCT Oil provides a clinically effective dose within the studied range of 15-30ml (1-2 tbsp) daily. Long-term use at recommended doses is generally well-tolerated based on available research. Discontinue and consult a healthcare provider if you experience adverse effects.
Does it cause any digestive issues or side effects?
Does it cause any digestive issues or side effects?
Liquid mct oil supplements may cause mild digestive discomfort initially. Bulletproof Brain Octane C8 MCT Oil is formulated as a liquid which is designed to be gentle on the stomach. Start with a lower dose if you have a sensitive stomach.
Is this product safe for pregnant or nursing women?
Is this product safe for pregnant or nursing women?
Bulletproof does not specifically market Bulletproof Brain Octane C8 MCT Oil for pregnant or nursing women. If you are pregnant, nursing, or planning to become pregnant, consult your healthcare provider before taking any mct oil supplement. Clinical safety data during pregnancy is limited for most mct oil products.
Is it safe to take with other supplements?
Is it safe to take with other supplements?
Bulletproof Brain Octane C8 MCT Oil can generally be combined with other supplements, but be mindful of total mct oil intake from all sources to stay within recommended daily limits (15-30ml (1-2 tbsp) daily). Bulletproof's third-party testing (Third-Party Tested (Triple-Distilled)) helps ensure purity and accurate labeling.
What is the recommended dosage?
What is the recommended dosage?
The recommended dose is 14g pure C8 per tablespoon. Clinical studies on mct oil typically use 15-30ml (1-2 tbsp) daily. Bulletproof Brain Octane C8 MCT Oil provides a full clinical dose per serving. Follow the label directions or your healthcare provider's recommendation.
Also consider
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