Bulletproof Coffee is simultaneously a specific brand of coffee, a recipe, a wellness philosophy, and a product ecosystem built around the idea that the right fat in your morning coffee can replace breakfast, support brain function, and accelerate fat burning. It is also one of the most marketed coffee brands in the world.
This review separates the genuine quality from the marketing claims. We cover what Bulletproof Coffee actually is, how the original recipe works, the science behind MCT oil, verified taste feedback from over 3,700 Amazon reviews, the full pricing picture, and who the product is and is not worth buying for.
Table of Contents
How We Researched This Review
Review analysis: 3,774 verified Amazon US reviews averaging 4.7 out of 5 for the Original Ground Coffee. Consumer Affairs verified reviews and ExpertBeacon 2026 taste test also referenced.
Science verification: MCT oil claims cross-referenced against published nutritional research. C8 caprylic acid and ketone production data referenced from verified scientific sources.
Pricing: All prices verified from shop.bulletproof.com and Walmart.com as of May 2026.
What Is Bulletproof Coffee? The Recipe and the Concept
Bulletproof Coffee refers to both the brand and to a specific morning drink recipe invented by Dave Asprey, a Silicon Valley technology executive and self-described biohacker, who founded the company in 2011.
The original Bulletproof Coffee recipe:
- 2 cups of brewed Bulletproof Coffee (or any quality low-mould coffee)
- 1 to 2 tablespoons of Brain Octane C8 MCT Oil (or any MCT oil)
- 1 to 2 tablespoons of unsalted grass-fed butter or grass-fed ghee
- Blend for 20 to 30 seconds until frothy and latte-like in texture
The resulting drink is high in calories, high in fat, and contains zero sugar. It is designed to be consumed as a breakfast replacement rather than alongside food.
The concept behind the recipe draws from ketogenic diet principles. When you consume fats instead of carbohydrates in the morning, your body may continue burning fat for fuel rather than switching to glucose. MCT oil, particularly C8 caprylic acid, converts rapidly into ketones, which the brain can use as an energy source. Proponents report reduced hunger, sustained energy, and improved mental clarity.
Asprey claims he developed the recipe after drinking yak butter tea in Tibet and noticing significant energy improvements. The brand has since grown into a full wellness product range including supplements, protein bars, collagen products, and sleep aids.
Bulletproof Coffee At a Glance
| Detail | Information |
|---|---|
| Founded | 2011, Dave Asprey, headquartered in Seattle Washington |
| Coffee sourcing | 100% Arabica, sourced from Central and South America |
| Coffee testing | Tested for mycotoxins and other toxins |
| Amazon rating (Original Ground) | 4.7 out of 5 from 3,774 verified reviews |
| Coffee price | $13.99 to $16.99 per 12oz ground (Walmart), higher on bulletproof.com |
| MCT Oil price | Brain Octane C8 MCT Oil: $25.99 to $49.95 per bottle |
| Starter kit price | Coffee Kit (coffee + ghee + MCT): $57 regular, $85 for pods version |
| Monthly cost estimate | $100 or more per month for daily Bulletproof Coffee with all ingredients |
| Subscription discount | 10% off with subscription, no minimum term |
| Availability | Walmart, Amazon, Target, and bulletproof.com. Available in UK and AU through Amazon |
Check current price: Bulletproof Coffee Official Store / Bulletproof on Amazon U / Bulletproof on Amazon UK
The MCT Oil Science: What Is Real and What Is Overstated
This section addresses the health claims that drive most Bulletproof Coffee purchases. Understanding the genuine science versus the marketing helps you decide whether the product is worth it for your situation.
What Is MCT Oil?
MCT stands for medium-chain triglycerides. These are a specific type of fat found naturally in coconut oil, palm oil, and dairy products. Unlike long-chain triglycerides found in most dietary fats, medium-chain triglycerides are absorbed directly into the bloodstream from the digestive tract and converted rapidly into energy by the liver.
Bulletproof’s Brain Octane C8 MCT Oil is extracted from 100% coconut oil and is concentrated to contain primarily C8 caprylic acid, the shortest and most rapidly converted MCT. C8 produces 4x the ketone energy of plain coconut oil and provides a higher level of ketone production than a C8 and C10 blend.
Ketones are molecules produced when the liver converts fat into energy. The brain can use ketones as an alternative fuel source to glucose. This is the basis of the ketogenic diet and the primary mechanism behind Bulletproof Coffee’s claimed cognitive effects.
The Genuine Science
The following claims about MCT oil have real research behind them:
MCT oil does convert quickly into ketones. This is well established in metabolic research.
MCT oil does not cause the same insulin spike as carbohydrates. For people managing blood sugar or following a ketogenic diet, this is a functional benefit.
High-fat morning drinks do reduce hunger in many people compared to carbohydrate-heavy breakfasts. The satiety effect of fats is documented in nutritional research.
What Is Overstated
The cognitive enhancement claims are the least well-supported aspect of Bulletproof Coffee’s marketing. The evidence for ketones specifically improving cognitive function in healthy non-ketogenic-adapted people is mixed and not conclusive. The National Institutes of Health’s research into MCT oil and cognition shows effects primarily in people with mild cognitive impairment, not in healthy individuals.
The “clean coffee” and “toxin-free” marketing, while genuine in its testing, addresses a concern that mainstream food safety research does not consider significant. Mycotoxin levels in commercially roasted coffee are generally within safe limits per standard food safety testing.
Honest Summary of the Science
If you follow a ketogenic diet or practice intermittent fasting: Bulletproof Coffee with MCT oil and grass-fed butter has genuine functional value for your approach. The high-fat, zero-carbohydrate morning drink supports ketosis and reduces hunger in a documented way.
If you drink coffee for the taste and experience: The MCT oil and butter add significant cost and calories without improving the coffee drinking experience. Standard specialty coffee from Volcanica Coffee or Atlas Coffee Club produces a better-tasting cup at lower cost.
The Coffee Itself: Taste and Quality
Separate from the recipe and health angle, how does Bulletproof Coffee taste as a straight black coffee?
The ExpertBeacon 2026 taste test describes the Original as: “robust flavor featuring plum, orange, and cocoa notes. As a medium roast it strikes a nice balance, not too bitter yet rich and complex.” They tried brewing it black and enjoyed the aroma and full body.
What verified Amazon buyers say (4.7 out of 5, 3,774 reviews):
- Consistent praise for smooth, clean flavour without bitterness
- Frequently described as tasting noticeably better than supermarket medium roast
- Some reviewers who drink it black specifically note the balanced profile
- The Mentalist (dark roast) receives praise from buyers who prefer bold, intense coffee
Where Bulletproof Coffee sits in quality terms: it is a good-quality 100% Arabica medium roast sourced from Central and South America. It is a step above commercial supermarket coffee. It is not competing at the single-origin specialty level of Ethiopian Yirgacheffe or Kenya AA. For buyers who want the health ecosystem and a reliably good medium roast, the quality is entirely adequate. For specialty coffee enthusiasts who prioritise origin character and complexity, other options deliver more interesting cups at competitive prices.
For context on what specialty grade means: What Is Specialty Coffee?
Full Product Range
| Product | Notes | Approx. price |
|---|---|---|
| Original Medium Roast Ground | 100% Arabica, Central and South America. Most popular. | $14 to $17 per 12oz |
| The Mentalist Dark Roast | Bold, full body, lower acid. For dark roast drinkers. | $16 to $19 per 12oz |
| Original Pods (24 count) | Single-serve Keurig compatible pods, toxin tested. | $31.49 for 24 pods |
| Brain Octane C8 MCT Oil | Pure C8 caprylic acid from coconut oil. Key recipe ingredient. | $26 to $50 per 14 to 32oz |
| Grass-Fed Ghee | Clarified butter from grass-fed cows. Recipe alternative to butter. | $20 to $25 |
| Coffee Kit (Ground + Ghee + MCT) | All three recipe ingredients together. Best value starter. | $57 regular |
| Coffee Kit (Pods + Ghee + MCT) | Pod version of the kit. Easier morning routine. | $85 regular |
| Cold Brew Latte Variety Pack | Pre-made cold brew with collagen and MCT oil. Dark Chocolate, Original, Vanilla. | Check current price |
| Original Creamer | MCT oil and grass-fed butter powder. Add to any coffee. 4.2 stars, 2,897 reviews. | $25.99 per 14.8oz |
Pricing: The Full Cost of Bulletproof Coffee Daily
Bulletproof Original coffee (1 bag per week): ~$60 per month
Brain Octane C8 MCT Oil (1 bottle per month): ~$35 to $50
Grass-fed unsalted butter (1 pack per week): ~$15 to $20
Total monthly estimate: $110 to $130 per month
Subscription discount (10%) reduces this to approximately $100 to $117 per month. For comparison, a quality specialty coffee subscription from Atlas Coffee Club costs $14 to $28 per month for the coffee alone, without the MCT and butter additions.
The Coffee Kit at $57 is the most cost-efficient way to start if you are genuinely interested in trying the full Bulletproof recipe. It includes all three ingredients at a lower combined price than buying each separately and eliminates any uncertainty about which MCT oil and ghee to source.
For buyers who want to try the recipe without committing to Bulletproof’s own products: any quality low-acid medium roast coffee, any pure C8 MCT oil, and any grass-fed unsalted butter (Kerry Gold is the most commonly recommended UK-available brand) produces essentially the same functional result.
Who Should and Should Not Buy Bulletproof
UK, Australia and New Zealand Availability
Bulletproof Coffee has significantly better international availability than most US specialty brands reviewed on this site.
UK: Bulletproof Original and The Mentalist are available on Amazon UK and in some Holland and Barrett and health food stores. Brain Octane C8 MCT Oil is also available on Amazon UK. Grass-fed butter is widely available in UK supermarkets (Kerry Gold is grass-fed and Irish-produced).
Australia: Bulletproof products are available on Amazon AU and through iHerb, which ships to Australia with reasonable freight costs. Grass-fed butter is readily available through Australian supermarkets.
New Zealand: Available through iHerb shipping, some specialty health retailers, and Amazon AU with cross-border shipping.
For UK, AU, and NZ buyers specifically interested in the keto coffee experience, the Bulletproof Creamer ($25.99) is a convenient alternative to sourcing the butter and MCT oil separately. Mix it into any brewed coffee for a simplified version of the recipe.
How to Make Bulletproof Coffee at Home
The recipe is simple but requires a blender for the correct frothy result. Adding butter and MCT oil to coffee without blending produces an oily, separated drink. Blending emulsifies the fats into the coffee and creates the latte-like texture.
The recipe (per serving):
- Brew 240 to 480ml of strong coffee using Bulletproof Coffee or any quality low-mould coffee
- Pour into a blender
- Add 1 to 2 tablespoons of Brain Octane C8 MCT Oil or any MCT oil
- Add 1 to 2 tablespoons of unsalted grass-fed butter or ghee
- Blend for 20 to 30 seconds on high speed until frothy and creamy
- Pour into a mug and drink immediately
Starting dose for MCT oil: Begin with 1 teaspoon, not a full tablespoon, to allow your digestive system to adjust. Too much MCT oil at once commonly causes digestive discomfort in first-time users. Increase gradually over 1 to 2 weeks.
Total calorie count: A standard Bulletproof Coffee with 2 tablespoons each of butter and MCT oil contains approximately 400 to 460 calories, comparable to a moderate breakfast.
Bulletproof vs Lifeboost vs Volcanica
Bulletproof vs Lifeboost Coffee: Both position around health credentials (toxin testing, low acid). Lifeboost focuses on low-acid single-origin Nicaraguan coffee. Bulletproof focuses on an entire recipe system with MCT oil and butter. For buyers who want low-acid coffee without the keto recipe: Lifeboost. For keto practitioners who want a complete system: Bulletproof. Full review: Lifeboost Coffee Review
Bulletproof vs Volcanica Coffee: Volcanica offers 150+ single-origin coffees at lower per-bag prices with roast-to-order freshness. Bulletproof offers health ecosystem products and branded recipe ingredients. For origin exploration and taste complexity: Volcanica. For keto lifestyle integration: Bulletproof. Full review: Volcanica Coffee Review
For the full specialty coffee subscription comparison: Best Coffee Subscriptions 2026
Frequently Asked Questions
Does Bulletproof Coffee actually work for weight loss?
The evidence is mixed. Bulletproof Coffee is high in calories from fats. If it replaces a higher-calorie breakfast and reduces overall daily calorie intake, it may support weight loss in a caloric deficit context. If it is added to an existing breakfast, it adds 400 or more calories and would typically produce weight gain rather than loss. For keto dieters in genuine ketosis, the fat-fuelling approach has documented effects on appetite and satiety that can support dietary adherence.
Is Bulletproof Coffee safe to drink every day?
For most healthy adults, yes. The main concern raised by healthcare professionals is the high saturated fat content from butter and MCT oil consumed daily. People with high cholesterol, cardiovascular conditions, or who are pregnant should consult a doctor before starting a daily Bulletproof Coffee routine. The Brand recommends one cup per day as optimal.
Can I make Bulletproof Coffee with regular supermarket butter?
Technically yes, but the recipe specifically calls for grass-fed unsalted butter. Grass-fed butter has a higher omega-3 to omega-6 ratio than grain-fed butter. The difference is meaningful in a daily consumption context. Kerry Gold (Ireland, widely available in UK and US) and Anchor (New Zealand, available in AU and NZ) are both grass-fed and widely available.
Does Bulletproof Coffee break intermittent fasting?
This depends on how strictly you define intermittent fasting. Bulletproof Coffee contains calories (approximately 400 to 460 per serving with butter and MCT oil) and technically ends a zero-calorie fast. However, it produces minimal insulin response due to its pure fat composition. Many intermittent fasting practitioners use a modified approach where high-fat, zero-carbohydrate drinks are permitted. This is often called “fat fasting.” Strict intermittent fasting communities consider Bulletproof Coffee to break the fast.
Where can I buy Bulletproof Coffee outside the USA?
Amazon UK, Amazon AU, and iHerb are the most reliable international sources. Bulletproof products are also available in some UK health food retailers and pharmacies including Holland and Barrett. The Coffee Kit is the most practical purchase for new buyers.
What caffeine does Bulletproof Coffee contain?
Bulletproof Original is a medium roast brewed in a standard 240ml cup containing approximately 95 mg of caffeine, similar to any quality drip coffee at the same strength. MCT oil and butter add no caffeine. For a full caffeine comparison: Caffeine Content in Every Coffee Type
Our Verdict
Bulletproof Coffee delivers what it promises to its target audience. The coffee is reliably good (4.7 stars from 3,774 Amazon reviews), the MCT oil and butter recipe has genuine functional value for keto and intermittent fasting practitioners, and the product ecosystem makes it easy to start without sourcing ingredients from multiple suppliers.
For buyers who are not following a ketogenic diet or intermittent fasting approach, the health premium is not worth the cost. At $110 or more per month for the full daily recipe versus $14 to $28 per month for an excellent specialty coffee subscription, the difference is significant and the specialty coffee delivers a meaningfully better cup for pure taste enjoyment.
For beginners who want to try the Bulletproof approach: start with the Coffee Kit at $57, which includes coffee, ghee, and MCT oil at a combined savings versus buying each separately. Use 1 teaspoon of MCT oil initially and increase gradually to avoid digestive discomfort.
Check current price: Bulletproof Coffee Official Store | Bulletproof Coffee Kit on Amazon US | Bulletproof on Amazon UK
Also compare: Lifeboost Coffee Review | Volcanica Coffee Review | Best Coffee Subscriptions 2026
Sources used for this article: Honest Brand Reviews Bulletproof Coffee Review | ExpertBeacon Ultimate Bulletproof Coffee Review 2026 | Consumer Affairs Bulletproof Coffee verified reviews | Bulletproof Official Store products and pricing | Walmart Bulletproof Coffee verified pricing | National Institutes of Health MCT oil and cognition research
Munir Ahmed is the founder of Coffee Craft Guide, dedicated to building the most thorough and honest coffee resource for home brewers worldwide. Combining SCA brewing standards with deep-dive research across global coffee communities (like r/espresso and Home-Barista) and thousands of verified reviews, Munir and his team deliver data-backed, expert coffee insights you can trust.