What are proprietary blends, and why are they a red flag?

A proprietary blend lists ingredients without individual dosages, making it impossible to know if active ingredients are present at doses shown to be effective in research — a significant transparency concern.

Are raspberry ketones or garcinia cambogia effective for fat loss?

No — despite popular marketing claims, both have weak or inconsistent evidence in actual human studies, making them poor indicators of a quality fat burner product.

$2.4B market — separate hype from evidence →

Does your fat burner's ingredient list actually hold up?

Q: Do fat burner supplements actually work?

Most fat burner supplements overstate their effectiveness — only a handful of ingredients, mainly caffeine and green tea extract, have solid supporting evidence, and even those provide modest rather than dramatic effects.

The fat burner market is full of proprietary blends and bold claims. Paste in an ingredient list and get an honest, evidence-based breakdown of what's likely to help — and what's just filler.

Analyze my fat burner Ask the AI Advisor

$2.4Bannual fat burner supplement market

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Everything about fat burner supplements, organized properly

From analyzing ingredients to understanding side effects and safer alternatives.

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Ingredient Analyzer

Score any fat burner's ingredient list.

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Caffeine & Green Tea

The most evidence-backed ingredients.

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Side Effects to Know

What to watch for before you buy.

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Proprietary Blend Red Flags

Why hidden dosages are a problem.

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Safer Alternatives

Evidence-based options worth considering.

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Pre-Workout Crossover

Where fat burners and pre-workouts overlap.

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Fat Burner Ingredient Analyzer

Select the ingredients in your fat burner supplement to get an honest evidence-based assessment.

Contains caffeine or green tea extract?

Contains a proprietary blend (ingredients listed without individual dosages)?

Contains raspberry ketones, garcinia cambogia, or CLA?

Your ingredient evidence breakdown

Select the ingredients above and tap Analyze my fat burner for an honest breakdown.

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The essentials

The fat burner market runs on hype — here's how to separate it from evidence

With a $2.4 billion annual market, fat burner supplements are big business, but the evidence behind most proprietary formulas is far weaker than the marketing suggests.

A few ingredients actually have evidence

Caffeine and green tea extract stand out as the most consistently evidence-backed ingredients in this category.

Many popular ingredients don't hold up

Raspberry ketones, garcinia cambogia, and CLA are commonly featured but have weak or inconsistent evidence in actual human studies.

Proprietary blends hide the truth

Without individual ingredient dosages listed, there's no way to know if a product contains meaningful amounts of its active ingredients.

Key takeaway

Only a handful of fat burner ingredients — mainly caffeine and green tea extract — have solid evidence behind them, and proprietary blends that hide individual dosages should be treated as a significant red flag.

Evidence-Based Thermogenic Supplement

A caffeine and green tea extract formula with transparent dosing.

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🩺Explore evidence-based thermogenicsCaffeine and green tea extract formulas 🛡️Explore structured fat loss programsDiet and exercise-based approaches

This content is for general educational purposes only, based on published research, and is not a substitute for personalized medical advice. Consult a doctor before starting any new supplement.

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The Fat Burner Ingredient Evidence Guide

A free PDF honestly scoring common fat burner ingredients, covering side effects, and safer evidence-based alternatives.

Evidence-based fat burner ingredients, honestly scored
Caffeine and green tea extract: the real story
Fat burner side effects to watch for
Why proprietary blends are a red flag
Safer, evidence-based alternatives