Best 10 Pre Workout Fat Burners in the UK
Updated AUG 2025
Pre-workout fat burners have become a popular addition to many fitness enthusiasts' routines, offering a potent combination of energy boosters, thermogenics, and appetite suppressants. If you're looking to maximize your workouts while shedding excess fat, these top three pre-workout fat burners are worth considering.
What are Fat Burners?
Pre-workout fat burners are supplements designed to enhance fat loss, boost energy levels, and improve focus during exercise sessions. They typically contain a blend of ingredients such as caffeine, thermogenics, and appetite suppressants to help users achieve their fitness goals more effectively.
Key Ingredients to Look For
- Caffeine: A common ingredient in pre-workout supplements, caffeine helps increase energy levels, improve focus, and enhance fat burning by stimulating the central nervous system.
- Thermogenics: Ingredients like green tea extract, capsaicin, and evodiaine promote thermogenesis, raising the body's core temperature to aid in fat loss.
- Appetite Suppressants: Compounds like theanine, choline, and certain amino acids help control cravings and reduce calorie intake, supporting weight loss efforts.
Who Should Use Fat Burners
Pre-workout fat burners are suitable for individuals looking to maximize fat loss while boosting energy and focus during workouts. They can benefit athletes, fitness enthusiasts, and anyone seeking to enhance their exercise performance and achieve their weight loss goals.
How Pre-Workouts Can Help Burn Fat
While pre-workouts are primarily designed to boost energy, focus, and performance, many also contain ingredients that can indirectly support fat loss when used alongside a calorie-controlled diet and regular training.
Here’s how they can help:
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Increase Calorie Burn: Stimulants like caffeine raise your metabolic rate, so you burn more calories both during and after your workout.
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Boost Training Intensity: More energy and endurance mean harder workouts, which can lead to greater overall calorie expenditure.
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Promote Fat Utilisation: Ingredients such as L-carnitine help the body use stored fat as fuel during exercise.
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Suppress Appetite: Certain amino acids and plant extracts can help reduce cravings, making it easier to stick to your nutrition plan.
Pre-workouts alone won’t cause fat loss — but when combined with consistent training and a balanced diet, they can help accelerate results.
Recommended Products
1. NXT Nutrition TNT Nuclear Shots – 12 x 60ml
Features:
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Highly concentrated, ready-to-drink pre-workout formula
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Delivers intense energy and muscle pumps in a convenient 60ml shot
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No mixing or measuring required
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Fast-absorbing liquid for rapid effects
Key Benefits:
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Perfect for on-the-go use before training
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Supports high-intensity workouts for increased calorie burn
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Enhances focus and drive without the need for bulky tubs or shakers
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Helps improve workout consistency and fat-burning potential
2. Reflex Nutrition Creatine Monohydrate 450g
Features:
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100% pure creatine monohydrate
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Micronised for easy mixing
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Suitable for stacking with fat-burning pre-workouts
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Unflavoured for versatility
Key Benefits:
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Supports explosive strength and power, allowing harder, calorie-burning workouts
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Helps preserve lean muscle during a fat-loss phase
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Improves recovery, enabling more frequent training sessions
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Increases muscle fullness for a more defined look
3. Redcon1 Total War 400g
Features:
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High-stim pre-workout with caffeine, beta-alanine, and citrulline malate
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Designed for extreme energy and focus
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Promotes intense muscle pumps
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Available in a variety of flavours
Key Benefits:
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Increases workout intensity for higher calorie expenditure
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Supports endurance, letting you train longer and harder
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Boosts blood flow for improved nutrient delivery and pump
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Helps break through training plateaus during fat loss phases
4. NXT Nutrition TNT Nuclear PRE 240g
Features:
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Potent pre-workout powder with high stimulant content
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Includes pump-enhancing and focus-boosting ingredients
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Scientifically formulated for maximum training output
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Easy to mix and great tasting
Key Benefits:
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Delivers laser focus and mental drive for fat-burning workouts
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Promotes skin-splitting pumps that keep you motivated in the gym
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Helps sustain energy throughout intense training sessions
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Encourages greater calorie burn through improved workout performance
5. Applied Nutrition ABE Pre-Workout 315g
Features:
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Blend of beta-alanine, creatine, caffeine, and citrulline
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Popular UK brand with a strong reputation for quality
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Zero sugar, low calorie formula
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Range of great-tasting flavours
Key Benefits:
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Increases energy and focus for high-intensity fat-burning training
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Improves endurance so you can sustain performance for longer
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Enhances pump and blood flow to muscles
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Perfect for those looking for an affordable but effective pre-workout
6. Rich Piana 5% 5150 (30 Servings)
Features:
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Extreme high-stimulant pre-workout
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Massive caffeine content with additional stimulants
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Designed for experienced users seeking maximum intensity
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Unique flavour range
Key Benefits:
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Delivers unmatched energy for the toughest training sessions
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Helps maximise calorie burn during high-volume workouts
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Supports relentless focus and drive from start to finish
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Ideal for advanced users wanting an all-out fat-burning session
7. Tailwind Nutrition Caffeinated – 30 Servings
Features:
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Combines caffeine with easy-digesting carbs and electrolytes
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Designed for endurance athletes and long training sessions
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Gluten-free, vegan-friendly formula
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Gentle on the stomach for sustained use
Key Benefits:
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Provides steady energy for extended fat-burning workouts
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Helps maintain hydration and performance during long sessions
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Encourages fat utilisation alongside carbohydrate energy
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Perfect for cardio-based and endurance fat-loss training
8. Cobra Labs JNX Sports The Ripper
Experience the explosive power of Cobra Labs JNX Sports The Ripper! This full-strength, fast-acting formula is designed to kickstart your fat-burning journey while providing clean, intense energy and enhanced mental focus. Say goodbye to pesky cravings and jitters, and hello to a leaner, more energized you.
Features:
- Full-strength, fast-acting formula
- Designed to burn fat and control food cravings
- Provides clean, intense energy and enhanced mental focus
- No jitters often associated with weight loss products
Key Benefits:
- Helps burn fat and control cravings
- Provides energy and enhances focus
- Natural and artificial flavors
- Fast-acting formula for quick results
9. PES Alphamine Fat Burner
Fuel your workouts with PES Alphamine Fat Burner, the ultimate feel-good drink for fitness enthusiasts. With its unique blend of energy-boosting ingredients and mood-enhancing compounds, Alphamine delivers smooth, long-lasting energy without the crashes or jitters. Get ready to crush your workouts and conquer your weight loss goals with Alphamine by your side.
Features:
- Designed for athletes and fitness enthusiasts
- Smooth and alert energy for hours
- Contains Leucine, L-Carnitine-L-Tartrate, and Choline for added benefits
- No crashes or jitters, enhances mood
Key Benefits:
- Ultimate feel-good fat loss drink
- Long-lasting appetite suppression
- Enhances mood and muscle hardness
- Targets stubborn fat areas
10. Grenade Thermo Detonator
Declare war on fat with Grenade Thermo Detonator, the award-winning fat burner trusted by elite athletes and fitness enthusiasts worldwide. Formulated with potent ingredients like Green Tea Extract, Caffeine Anhydrous, and Capsaicin, Thermo Detonator boosts metabolism, suppresses appetite, and provides sustained energy without the dreaded comedowns or crashes. Arm yourself with Grenade and conquer your fat loss journey like never before.
Features:
- Award-winning fat burner formulated with powerful ingredients
- Boosts metabolism, suppresses appetite, and provides sustained energy
- Contains Green Tea Extract, Caffeine Anhydrous, Cocoa Been Extract, Evodiaine, and Capsaicin
Key Benefits:
- Increases metabolism, energy, and focus
- Reduces appetite with no comedowns or crashes
- Encourages fat utilization for fuel
Conclusion
In conclusion, pre-workout fat burners can be valuable tools for enhancing fat loss and improving workout performance. However, it's essential to use them responsibly and in conjunction with a balanced diet and regular exercise routine for optimal results. Consider trying one of these top-rated products to ignite your workouts and achieve your fitness goals faster! At Nutrition Now, we only stock the best supplements and fitness nutrition in the UK and Ireland. Make sure to check out our complete range of fat burners supplements in our online store!
FAQs
- What are fat burners, and how do they work? Fat burners are dietary supplements designed to enhance fat loss by increasing metabolism, suppressing appetite, and boosting energy levels. They typically contain ingredients like caffeine, thermogenics, and appetite suppressants that work together to promote weight loss.
- Are fat burners safe to use? When used as directed and in moderation, fat burners can be safe for most individuals. However, it's essential to read the label carefully, follow dosage instructions, and consult with a healthcare professional, especially if you have any underlying health conditions or are taking medication.
- Do fat burners have any side effects? While fat burners are generally safe, some individuals may experience side effects such as increased heart rate, jitteriness, insomnia, and gastrointestinal discomfort. These side effects are usually mild and temporary but can vary depending on the individual and the specific ingredients in the fat burner.
- Can fat burners help me lose weight without exercise or dieting? Fat burners are intended to supplement a healthy diet and exercise routine, not replace them. While they can help enhance fat loss when combined with proper nutrition and regular physical activity, relying solely on fat burners without making lifestyle changes is unlikely to yield significant results.
- How long does it take to see results from fat burners? Results from fat burners can vary depending on individual factors such as metabolism, diet, and exercise habits. Some people may notice changes in energy levels and appetite suppression shortly after taking fat burners, while visible changes in weight loss may take several weeks of consistent use.