Fat Burners

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Last Updated: Friday 16th October 2026 What Are Fat Burners? Fat burners, also known as thermogenic fat burners or fat burner supplements, are dietary supplements that usually combine caffeine or other stimulants with ingredients such as L-carnitine, green tea extract and herbal extracts. They come as flavoured powders you mix with water, capsules and tablets (often called fat burner pills), gummies and drinks. Stim-free versions are also available for anyone avoiding caffeine. Fat burners are not a substitute for a balanced diet and regular exercise. Most people use them as one part of a wider training and nutrition routine. At Nutrition Warehouse, we stock over 150 fat burners from Australian and international brands. Want to see which ones customers rate highest? Check out our Top 10 Fat Burners for 2026 , or take our Shred Quiz for a personalised recommendation. Fat Burners by Stimulant Level The biggest difference between fat burners is how much stimulant they contain. Here's how our range is grouped: Type Stimulant Strength Good For Good to Know High Stimulant Strongest Experienced users with a high caffeine tolerance Usually taken earlier in the day. Avoid combining with other stimulant products Moderate Stimulant Medium Regular trainers wanting a middle ground The most popular range, including many of our best-selling powders Low Stimulant Light Beginners or anyone who prefers less caffeine A good starting point if you're new to fat burners Non-Stimulant None Caffeine-sensitive users or evening use Caffeine-free formulas, often built around L-carnitine Caffeine content varies by product, so always check the amount per serve on the label. What Is a Thermogenic Fat Burner? "Thermogenic" is the name commonly given to stimulant-based fat burners, as most contain caffeine and ingredients such as green tea extract or capsicum extract. Thermo fat burners make up most of our range, while non-stimulant formulas skip the caffeine. Learn more in our guide What Is a The