Instant Knockout vs. HUEL: Which Fat Burner Is Better?

Written by James C., M.S.(C), PT

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Meal replacement shakes and supplements have gained significant popularity in recent years as people seek convenient, nutrient-dense options to support their health and fitness goals. In this comparison, we’ll examine two products that have become synonymous with the industry: Instant Knockout Complete and Huel Black. Both offer unique benefits and cater to different preferences, so we’ll delve deeper into their overall nutrition, purpose and effectiveness, and target audience to better understand the distinctions between them.

Instant Knockout Complete is designed as a comprehensive meal replacement solution with a focus on high-quality protein, vitamins, and minerals. The product aims to support weight loss and muscle building while keeping hunger at bay. On the other hand, Huel Black is a staple in the meal replacement market, boasting a vegan-friendly formula that provides an ideal balance of macronutrients and micronutrients for optimum health and nutrition. The brand has a reputation for being innovative and versatile, with various product options to suit a range of preferences.

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Key Takeaways

  • Instant Knockout Complete offers a high-protein formula geared towards weight loss and muscle building, while Huel Black provides a balanced vegan meal replacement option.
  • Both brands have a range of product variations and flavors to cater to different tastes and nutritional needs.
  • Comparing factors such as overall nutrition profiles, effectiveness, and target audience is crucial when choosing the meal replacement shake that best aligns with individual goals and preferences.

Comparing Overall Nutrition Profiles

Instant Knockout and HUEL are both marketed as meal replacement options, but they cater to different goals. Instant Knockout Complete focuses more on a high-protein formula that assists with weight loss and muscle building, whereas HUEL Black offers a balanced and nutritionally complete meal replacement.

Calories and Protein: Instant Knockout Complete boasts a calorie count of 400 per serving and a substantial protein content, similar to HUEL Black. For comparison, HUEL Black provides 400 calories and 40g of protein per serving, making them quite similar in this regard.

Vitamins and Minerals: Both meal replacement options contain a well-rounded profile of essential vitamins and minerals. Instant Knockout Complete and HUEL Black include 27 vitamins and minerals in their formulas, ensuring that users receive a balanced mix of micronutrients required for optimal health.

Sugar Content: An essential aspect to consider when comparing nutrition profiles is sugar content. HUEL Black products are generally known for their low sugar content. While there is limited information available on the sugar content of Instant Knockout Complete, it does use natural ingredients, indicating that its sugar content may be similar to HUEL Black’s minimal levels.

Ingredients: Instant Knockout Complete mainly features natural ingredients and emphasizes a protein boost for those looking to build muscle or lose weight. Meanwhile, HUEL Black incorporates a blend of wholesome components that provide balanced nutrition, ideal for those seeking a quick and nutritious meal alternative.

In summary, Instant Knockout Complete and HUEL Black both offer nutritionally dense profiles with significant protein content and a range of essential vitamins and minerals. The primary difference lies in the targeted audience, as Instant Knockout Complete is more fitness-oriented, aiming to assist with weight loss and muscle building. On the other hand, HUEL Black is geared towards offering a balanced, nutritionally complete meal replacement for individuals with busy lifestyles.

Purpose and Effectiveness

Weight Loss and Fitness Goals

Both Instant Knockout and HUEL are formulated to support individuals in achieving their health and fitness goals. Instant Knockout is primarily designed as a fat burner to aid in weight loss. It is used by professional MMA fighters like Diego Sanchez and John Dodson to help suppress appetite, boost energy levels, and achieve a lean and ripped physique.

On the other hand, HUEL offers a line of meal replacement shakes, including the more protein-rich Black formulation. The HUEL Black edition contains a substantial 40g of protein per serving, making it suitable for individuals focused on muscle-building and overall fitness.

While Instant Knockout is specifically tailored for weight loss and fat-burning purposes, HUEL Black can be effectively incorporated into a workout regime to promote muscle growth and recovery.

Everyday Nutrition and Meal Replacement

HUEL is primarily designed as a meal replacement shake, offering a balanced and convenient option for individuals seeking to maintain proper nutrition on-the-go. The HUEL Powder 3.0 provides a well-rounded macro-nutritional profile:

  • Calories: 400
  • Fat: 13g
  • Carbohydrates: 37g
  • Sugars: 1g
  • Fibre: 7.5g
  • Protein: 30g
  • Salt: 0.5g

These values may vary slightly depending on the specific flavor chosen. HUEL Black contains higher protein content to support muscle development and fitness goals. It’s worth noting that HUEL products also offer 27 essential vitamins and minerals, ensuring a comprehensive nutritional profile.

Instant Knockout Complete, although not primarily marketed as a meal replacement shake, can be considered as an alternative to HUEL Black. It delivers a nutritionally complete meal replacement shake with a protein boost, using natural ingredients. Like HUEL products, Instant Knockout Complete also includes the essential 27 vitamins and minerals for comprehensive nutrition.

In summary, HUEL is an ideal choice for those looking for a nutritious and convenient meal replacement solution, while Instant Knockout is primarily designed for weight loss and fitness goals. However, both products offer nutritional completeness and can be incorporated into a healthy diet to suit individual needs.

Target Audience

Considerations for Men

Instant Knockout and HUEL cater to different target audiences, with considerations for men being a focus for both brands. Instant Knockout Complete is geared towards individuals looking to achieve weight loss goals. With macro ratios close to recommended proportions for weight loss (30/45/25 and 50/35/15), it is a viable option for men seeking a balanced meal replacement.

HUEL, on the other hand, targets health enthusiasts who want to maintain or improve their weight. The brand recognizes that many people find calorie counting difficult, and HUEL offers a convenient solution for those looking to simplify their diet. Men can easily integrate HUEL products into their daily routines, ensuring they maintain a balanced diet even when they are time-poor.

Vegan and Dietary Restrictions

For individuals following vegan or plant-based diets, HUEL is a more suitable option. The product is formulated to cater to these dietary preferences, making it an attractive choice for individuals who wish to avoid animal-derived ingredients. Additionally, HUEL is designed to be:

  • Dairy-free: Suitable for those with lactose intolerance or allergies.
  • Gluten-free: Beneficial for individuals with gluten sensitivity or celiac disease.
  • Soy-free: Ideal for those who have soy allergies or avoid soy for dietary reasons.

Instant Knockout Complete also caters to diverse dietary needs; however, its focus on weight loss may not be as appealing for vegan or plant-based consumers as HUEL.

Ingredient Analysis

Protein Sources

Instant Knockout and HUEL both utilize plant-based protein sources in their formulas. Instant Knockout mainly uses pea protein and rice protein as its primary protein sources, while HUEL relies on a combination of pea and soy protein. These sources are commonly used in plant-based products as they provide a complete amino acid profile, which helps with muscle recovery and general health.

Carbohydrates and Fibre

The two products differ in their carbohydrate sources and composition. Instant Knockout Complete is high in carbohydrates, with oat flour as its main source. In contrast, HUEL Black offers fewer carbohydrates, primarily coming from tapioca starch.

When it comes to fibre content, both products contain a healthy amount to aid digestion and promote satiety. Instant Knockout includes fibres from sources such as flaxseed and chia seed, while HUEL incorporates fibres derived from ingredients like oats and flaxseed as well.

Fats and Healthy Fats

An important aspect of these products is their fat content, specifically the inclusion of healthy fats. Instant Knockout uses a blend of flaxseed and chia seed, which are both rich in omega-3 fatty acids. These are essential for brain function, heart health, and overall well-being. HUEL also includes healthy fats from flaxseed and incorporates medium-chain triglycerides (MCTs) from coconut into its formula. MCTs have been shown to promote energy, increase metabolism, and assist in weight management.

In summary, both Instant Knockout and HUEL provide a balanced mix of plant-based proteins, carbohydrates, fibres, and healthy fats in their formulas. While there are some differences in the sources and compositions of these ingredients, each product offers a nutrient-dense option for those seeking a meal replacement or nutritional supplement.

Product Options and Variations

Flavor Varieties and Taste

Instant Knockout Complete comes in a variety of flavors to cater to individual preferences. Some of the popular options available include Vanilla and Chocolate. Users have reported that the taste of Instant Knockout Complete is enjoyable, making it easy to incorporate into their daily routines.

Huel Black also offers a range of flavors, which allows consumers to choose based on their personal preferences. Like Instant Knockout Complete, it comes in the popular Vanilla and Chocolate options, among others. The taste of Huel Black has been praised for being palatable and easy to integrate into various diets.

Specialized Formulations

Instant Knockout Complete and Huel Black both feature specialized formulations to suit the needs of their consumers. Instant Knockout Complete includes ingredients such as rice, oat flour, golden flaxseed powder, brown rice protein, and a vitamin and mineral mix. Additionally, Instant Knockout Complete contains Chromium, which is claimed to help elevate mood, and bacillus coagulans, which supports healthy gut bacteria. The product is also low in sugar, utilizing sucralose as a sweetener.

On the other hand, Huel Black offers a specialized nutritional profile for each flavor, to accommodate varying taste preferences while maintaining a consistent macronutrient balance. For instance, the Cinnamon Swirl flavor, at a recommended 90g serving, has the following nutritional composition:

  • Calories: 400
  • Fat: 13g
  • Carbohydrates: 37g
  • Sugars: 1g
  • Fibre: 7.5g
  • Protein: 30g
  • Salt: 0.5g

In summary, both Instant Knockout Complete and Huel Black provide options in terms of flavors, taste, and specialized formulations to cater to a wide range of consumer needs.

Energy and Performance

When comparing Instant Knockout and HUEL, it’s essential to understand how each product affects energy levels and overall performance. Instant Knockout is mainly targeted at athletes and individuals looking to boost their metabolism and lose weight. On the other hand, HUEL is a meal replacement shake designed to provide balanced nutrition for everyone, not only athletes.

Instant Knockout contains caffeine and green tea extract that help increase energy levels and metabolism. The caffeine content stimulates the central nervous system, thereby providing a boost in energy and alertness. Green tea extract is known for its thermogenic properties, which assist in calorie burning and fat oxidation. This combination makes Instant Knockout an excellent option for those aiming to improve their workouts and athletic performance.

HUEL focuses on providing a well-rounded nutritional profile, which includes carbohydrates, proteins, and fats. Carbohydrates are responsible for giving the body the energy it needs for various activities. HUEL Black, a version of HUEL, contains 40g of protein per serving, which can support muscle growth and recovery in active individuals. However, it doesn’t contain specific ingredients that directly target energy metabolism like Instant Knockout.

Regarding energy and performance, here’s a brief comparison:

AspectInstant KnockoutHUEL
Energy BoostCaffeine and green tea extractCarbohydrates
MetabolismSupports fat burningProvides balanced nutrition
Workout SupportSuitable for athletesSuitable for everyone, including active people
Key IngredientsCaffeine, green tea extractCarbohydrates, proteins, fats

In summary, Instant Knockout seems to be more focused on boosting energy levels and metabolism, while HUEL aims to provide complete nutrition for sustained energy. Both products can be beneficial for athletes, though Instant Knockout may provide a more targeted approach to improving workouts and overall performance.

Cost and Value Analysis

When comparing Instant Knockout and HUEL, it is essential to consider both cost and value. These meal replacement shakes offer different features and benefits, making it crucial to analyze how they stack up financially for consumers.

Instant Knockout is known as a fat-burning supplement that targets athletes and fitness enthusiasts looking to quickly lose weight and get in shape. While its exact pricing may vary depending on the retailer, it generally falls within the mid-to-upper range of the market. Given its professional endorsement from MMA fighters and boxers, many users find that the cost is justified because of its effectiveness.

HUEL, on the other hand, is a highly popular meal replacement shake that caters to a broader audience seeking to improve overall nutrition and simplify meal planning. A standard HUEL powder meal costs around £1.51 (or equivalent in the US), making it an affordable option for many consumers. Furthermore, HUEL offers a more protein-rich variation called HUEL Black, which contains a substantial 40g of protein per serving. Although this option is slightly more expensive, it may be a worthy investment for those looking to enhance their protein intake significantly.

Here is a quick comparison of the two products:

ProductTarget AudiencePrice RangeKey Features
Instant KnockoutAthletes, Fitness EnthusiastsMid-to-UpperFat-burning, endorsed by MMA fighters and boxers
HUELGeneral AudienceAffordableNutrient-rich, easy meal planning, high-protein option

It is important to note that the best meal replacement shake for an individual will depend on their unique needs and goals. Instant Knockout is geared towards those with specific weight loss objectives, while HUEL offers broader nutritional benefits and has the added flexibility of regular or high-protein formulas.

In conclusion, both Instant Knockout and HUEL provide potential value to different segments of consumers. The key is to assess one’s personal needs and objectives when selecting the most suitable meal replacement shake. By examining cost, nutritional content, and target audience, users can make an informed decision and choose the product that offers the best value for their needs.

Safety and Side Effects

Natural vs. Artificial Additives

When comparing Instant Knockout and HUEL, it is important to consider the additives used in each product. Instant Knockout uses caffeine, which can be useful for weight loss by increasing activity levels but may cause side effects such as insomnia, stomach irritation, and respiratory difficulties in sensitive individuals[^12^]. On the other hand, HUEL opts for real sugar as a sweetener, providing a more natural option.

Instant Knockout contains sucralose, an artificial sweetener, while HUEL Black Edition does not use artificial sweeteners at all[^5^]. The use of artificial additives is a consideration for some individuals who prefer to avoid them for personal or health reasons. Artificial sweeteners like sucralose are generally considered safe, but some people may experience side effects or prefer to avoid them.

Potential Allergens

Instant Knockout:

  • No known allergens


  • Gluten-free[^5^]
  • Soy-free[^3^]
  • GMO-free[^3^]

Both products aim to minimize allergenic ingredients, making them suitable for a diverse range of individuals. HUEL specifically advertises itself as being free of common allergens – it is gluten-free, soy-free, and GMO-free[^3^]. Instant Knockout does not specifically mention any allergen-free claims, but it is important to carefully review the ingredient list if you have specific allergies or sensitivities.

In conclusion, considering the safety and potential side effects of Instant Knockout and HUEL, both products have taken steps to minimize risks while providing effective supplements for their intended purposes. It is essential to review the ingredient lists carefully and consult with a healthcare professional before incorporating either product into your regimen.

Brand Philosophies and Reputation

Instant Knockout is a fat-burning supplement focused on helping individuals achieve their fitness goals and maintain their desired weight. Manufactured by Roar Ambition, the brand is trusted by professional MMA fighters, boxers, and athletes looking to cut weight and get in shape quickly. Instant Knockout is known for its effective and fast-acting formula. The brand strives to provide clean and natural ingredients, ensuring that customers receive a high-quality product with minimal side effects.

On the other hand, HUEL is a popular meal replacement brand which has become synonymous with the industry mainly due to their wide range of plant-based products. Their core philosophy revolves around providing a healthy, balanced, and nutritionally complete alternative to traditional meals. Catering to the needs of customers with various dietary requirements, HUEL offers products that are vegan, GMO-free, soy-free, and gluten-free. With a focus on sustainability and reducing food waste, HUEL has established itself as an environmentally-friendly choice for many consumers.

Both brands have garnered a solid reputation among fitness enthusiasts, athletes, and health-conscious consumers. Their dedicated customer bases appreciate the following aspects:

AspectInstant KnockoutHUEL
Vegan OptionsLimitedExtensive
Clean IngredientsYesYes
Natural IngredientsYesYes
SustainabilityNot Explicitly StatedHighly Emphasized

While Instant Knockout targets users who focus on weight loss and athletic performance, HUEL aims at a broader audience, including vegans and those with specific dietary needs. Each brand has created its niche by prioritizing distinct aspects of their product development, with Instant Knockout centering on effective fat-burning ingredients, and HUEL focusing on creating nutritionally complete and environmentally friendly meal replacements.

Customer Experience and Feedback

When comparing Instant Knockout and Huel, it’s essential to consider the experiences and feedback of customers who have used these products. To have a clear understanding, let’s look at the two popular supplements in various aspects.

Instant Knockout

Consumers appreciate Instant Knockout for its effectiveness as a fat burner. Many users have reported increased energy levels, reduced appetite, and improved weight loss results. However, some customers experienced minor side effects, such as jitters and increased heart rate, which could be attributed to the caffeine content in the supplement. Generally, customers seem to be satisfied with the Instant Knockout’s performance.


Huel receives positive feedback for its convenience and nutritional completeness. Users find Huel a practical meal replacement option, especially for those with busy lifestyles. Huel Black, the protein-rich version, is particularly popular among fitness enthusiasts for its 40g of protein per serving. Some customers, however, may express slight dissatisfaction with Huel’s taste and consistency, as these factors may take some time to get used to.


For those interested in exploring alternatives to Huel and Instant Knockout, there is a variety of similar products available on the market:

  • Mana: A nutritionally complete meal replacement shake that claims to cover all essential nutrients in a single serving for balanced and convenient meal.
  • Jimmy Joy: Offers meal replacement shakes and bars with various flavors that focus on providing a complete meal at an affordable price.
  • Feed: This brand produces nutritionally balanced meal replacement bars and shakes made from plant-based ingredients that cater to different dietary requirements.

In conclusion, customer feedback on both Instant Knockout and Huel is generally positive, despite some minor drawbacks. As for alternatives, Mana, Jimmy Joy, and Feed also receive praise for their meal replacement offerings and might be worth exploring based on individual preferences and needs.

Environmental and Ethical Considerations

When comparing Instant Knockout Complete and Huel Black, it’s essential to consider the environmental and ethical aspects of the products. Both brands strive to incorporate sustainable practices and uphold high ethical standards.

Instant Knockout Complete is characterized by its use of natural ingredients, which contributes to a lower environmental footprint. Additionally, the product is designed as a nutritionally complete meal replacement with a protein boost, aligning with the trend of plant-based diets.

Huel Black, on the other hand, is explicitly formulated as a vegan meal replacement. The brand is committed to providing plant-based nutrition, which has a lower environmental impact compared to animal-based products. Moreover, Huel Black aims to minimize waste and prioritize the use of sustainable packaging materials.

Both brands also emphasize the importance of ethical practices. For example:

  • Instant Knockout Complete focuses on using natural and non-GMO ingredients.
  • Huel Black ensures that all of its ingredients are responsibly sourced and maintains transparency with customers.

In summary, both Instant Knockout Complete and Huel Black demonstrate a commitment to environmental and ethical considerations in their product formulations and business practices. Consumers who value sustainability, vegan-friendly options, and responsible sourcing can confidently choose either product with these factors in mind.


Instant Knockout and HUEL are both popular meal replacement products designed to support weight loss and maintain a healthy diet. However, there are some differences that may lead consumers to choose one over the other.

Instant Knockout is known for its superior ingredient profile and is commonly used by professional athletes, MMA fighters, and boxers. It is highly regarded for its effectiveness in supporting fat loss and getting in shape quickly. A single serving of Instant Knockout Complete offers a high nutrient value that surpasses even a triple serving of HUEL Black Edition.


  • Superior ingredient profile
  • Trusted by professional athletes
  • High nutrient value per serving

HUEL, on the other hand, is highly customizable, offering various formulations like their original Powder, protein-rich Black Edition, and Hot & Savory line. While HUEL contains a lower quantity of essential vitamins and minerals when compared to Instant Knockout, it still provides a well-rounded nutrient profile.


  • Multiple formulations available
  • Good nutrient profile
  • Customizable for different dietary needs

When comparing the two, it is clear that Instant Knockout has an edge in terms of nutrient density and effectiveness for weight loss. Nonetheless, HUEL remains a solid option for those seeking a more versatile and customizable meal replacement product.

To conclude, both Instant Knockout and HUEL can be beneficial depending on an individual’s needs and goals. Instant Knockout may be the better choice for those focused on rapid weight loss and athletic performance, while HUEL offers more customizability and variety for users with different dietary requirements.

Frequently Asked Questions

What are the primary benefits of taking Instant Knockout?

Instant Knockout is a product aimed at supporting weight loss and building lean muscle. It does so by providing a well-rounded nutritional profile including 35g of protein, 35g of carbs, and 13g of fat per serving. It also contains 27 micronutrients, each contributing to at least 30% of your daily intake, ensuring that your body gets the necessary nutrients for a healthy lifestyle.

How does Huel nutritionally compare to traditional meals?

Huel is a meal replacement powder designed to provide a balanced and nutritionally complete meal. It contains a mix of protein, carbohydrates, fats, and essential nutrients. When compared to traditional meals, Huel offers a convenient and efficient way to get the essential nutrients your body needs without the hassle of cooking and meal planning. It comes in various forms, including the original Huel Powder and the more protein-rich Huel Black, which provides 40g of protein per serving.

Can Instant Knockout be used as a meal replacement like Huel?

While Instant Knockout is meant to support weight loss, it isn’t specifically designed as a meal replacement. Huel, on the other hand, has been formulated to be a complete and balanced meal substitute, providing a mix of macronutrients and micronutrients necessary for optimal health. Instant Knockout is a better option for those focusing on weight management and muscle building, while Huel is designed for a more general meal replacement solution.

What are the potential risks of consuming Huel as your sole food source?

While Huel is designed as a nutritionally complete meal replacement, relying on it as your sole food source could have potential downsides. Long-term use of any single food source can lead to potential nutritional deficiencies, food fatigue, and potential social implications by limiting the variety and enjoyment of real foods in your diet. It’s essential to maintain a balanced and diverse diet to ensure optimal health.

How does the protein content in Huel measure up against typical protein supplements?

Huel offers a good amount of protein, with the original Huel Powder providing 30g of protein per serving and the Huel Black offering 40g of protein. This positions Huel as a decent protein supplement when compared to traditional protein powders. However, if your primary goal is to increase protein intake for muscle building or recovery, dedicated protein supplements might be a better fit to ensure higher protein concentration and better-tailored options.

What are users’ experiences with weight management when using Instant Knockout?

Instant Knockout is designed to aid in weight management, and users have reported positive experiences when using the product consistently alongside a healthy diet and regular exercise. While individual results will vary, many users have found Instant Knockout to be helpful for losing weight, maintaining healthy weight levels, and building lean muscle.

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