Top 10 Thermogenic Fat Burners in the UK

Explore popular thermogenic fat burners including capsules and powders. Compare ingredients, serving counts and caffeine levels to choose your preferred support.

✅ Updated September 2025
🏆 Best‑Selling
📝 Editorial Reviews & Comparisons

Jamie’s Tip: Start with a low serving and monitor tolerance; pair thermogenics with a balanced diet and exercise.

Thermo Detonator

Capsules | ~100 mg caffeine per capsule | Green Tea, Bitter Orange & Cayenne | ~100 servings

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BULK

Complete Thermogenic

Capsules | ~300 mg caffeine per serving | Green Tea, Citrus Aurantium & Kola Nut | ~90 servings

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Protein Works

Thermopro Burn

Powder | ~200 mg caffeine per scoop | Green Tea, L‑Carnitine & B Vitamins | ~30 servings

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MyVitamins

Thermopure

Capsules | ~150 mg caffeine per serving | Green Tea, L‑Tyrosine & Black Pepper | ~30 servings

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USN

PhedraCut Lipo X

Capsules | ~112 mg caffeine per 2‑capsule serving | Sinetrol, Green Coffee & EnXtra | ~30 servings

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ENGN

Shred

Powder | ~260 mg caffeine per scoop | CLA, L‑Carnitine & Capsimax | ~30 servings

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Shred‑X

Extreme Thermogenic

Powder | ~200 mg caffeine per scoop | L‑Carnitine, Choline & Vitamins | ~30 servings

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ProBRN

Slim Smart

Capsules | ~200 mg caffeine per serving | Green Tea, Choline & L‑Carnitine | ~30 servings

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MaxiNutrition

Thermobol

Tablets | ~150 mg caffeine per 3‑tablet serving | Green Tea, L‑Tyrosine & Vitamin B12 | ~30 servings

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EHPlabs

OxyShred Ultra Concentration

Powder | ~150 mg caffeine per scoop | Acetyl L‑Carnitine, Green Tea & Raspberry | ~60 servings

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Top Thermogenic Picks (Compared Side by Side)

	🥇 Grenade Thermo Detonator	🥈 BULK Complete Thermogenic	🥉 Protein Works Thermopro Burn
Caffeine (mg)	~100	~300	~200
Key ingredients	Green Tea, Bitter Orange, Cayenne	Green Tea, Citrus Aurantium, Kola Nut	Green Tea, L‑Carnitine, B Vitamins
Serving form	Capsule	Capsule	Powder
Servings per bottle	~100	~90	~30
Added stimulants	Bitter Orange	Citrus & Kola	None
Value for money	3.8/5	Best Value 4.2/5	3.6/5
Overall	Good	Very Good	Good
Best for	Balanced Energy	High Potency	Powder Convenience
	View Product →	View Product →	View Product →

For general comparison purposes, amounts and servings are approximate and taken from product labels. All “Value for Money” scores are editorial ratings based on the author’s independent assessment. Macro levels (Low/Medium/High) are simplified for ease of comparison. Information is for general purposes only.

FAQs

Are thermogenic fat burners safe for everyday use?

Many thermogenic supplements are commonly chosen for daily routines, but it’s best to follow the serving guidance on each label and consult a health professional if you have any concerns.

Do I need caffeine in a fat burner?

Not necessarily. Some formulas include caffeine for an energy lift, while others are stimulant‑free. Pick a product that suits your tolerance and time of day.

Can I combine fat burners with coffee or pre‑workouts?

Some people stack thermogenics with other caffeinated products, but total caffeine intake should be monitored to avoid excessive stimulation.

Are capsule or powder thermogenics better?

Capsules are convenient for on‑the‑go use, whereas powders allow flexible serving sizes and flavours. Both forms may support similar goals; choose based on personal preference.

Need a lean shake to complement your burn?

See Low‑Calorie Whey Isolates →