4Endurance Pro Fusion - 90 capsules supplement bottle, brown with gold cap, dark gray label with red accents, benefits listed.

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Fusion_Fat Burning_VO2_max_4Endurance_Pro

Fusion

Name: Fusion
Brand: 4Endurance Pro
SKU: 103900
Price: 29.99 EUR
Availability: InStock
Rating: 4.26 (853 reviews)

853 reviews

Fat burn, VO2 max

4Endurance Pro

Advanced multipurpose endurance supplement combining natural stimulants and adaptogens to maximize fat burn and boost performance.

Boosts fat metabolism
Improves VO2 max and endurance
Increases ATP energy levels
Reduces workout related stress
Reduces water retention

€39.99 €29.99Save €10.00

Quantity: 90 capsules / 30 servings

Dispatch within 48 hours. Delivery time depends on your location.

Fusion is a powerful multipurpose supplement designed for endurance athletes who want to stay lean and energized. It allows you to manage weight effectively while keeping your performance on point.

With a potent blend of natural stimulants and adaptogens, Fusion improves fat oxidation, boosts VO2 max and reduces stress — ideal for athletes who want to lose excess weight and increase overall endurance.

Why adaptogens? Workout related stress is a major factor affecting both weight loss and performance. During training, rising stress levels increase cortisol, which slows fat loss and hinders performance. Fusion’s powerful adaptogen blend helps overcome these workout stress-related challenges, enabling you to lose weight faster and maintain peak energy.

Become leaner and faster with Fusion in just 2 weeks!

Boosts fat metabolism
Boosts VO2 max and endurance
Increases ATP energy levels
Reduces water retention
Reduces workout related stress
Increases focus
Reduces mental fatigue
Natural ingredients
Doping-free
Vegan capsules

Take 3 capsules with water approximately 20 minutes before exercise.

On non-training days, take 3 capsules in the morning.

After three months of taking the product, it is recommended to take a 3-4 week break.

Instructions on how to combine different adaptogen products are found on this link.

WARNING! The use of this product is not recommended for people who:

use antihypertensives and blood thinners — in this case, we advise against the use of this product and recommend that you consult your doctor, who knows you best, or the specialist who prescribed the medication;
are sensitive to stimulants in any way!

	Per serving (3 capsules)	RDA*
Green tea extract (95% polyphenols, 45% EGCG)	540 mg	*
Panax ginseng (80% ginsenosides)	30 mg	*
Rhodiola (3% rosavins, 1% salidrosides)	240 mg	*
Cayenne pepper extract (10:1)	120 mg	*
Ginger extract (10:1)	120 mg	*
Grape seed extract (95% OPC)	120 mg
Dandelion extract (10:1)	60 mg	*
Caffeine	60 mg	*

Food supplement. Ingredients: Green tea extract (95% polyphenols, 45% EGCG) 540 mg, Korean ginseng {Panax ginseng (80% ginsenosides)} 30 mg, Rhodiola {Rodiola rosea (3% rosavins and 1% salidrosides)} 240 mg, cayenne pepper extract (10:1) 120 mg, ginger extract (10:1) 120 mg, grape seed extract (95% OPC**) 120 mg, dandelion extract (10:1) 60 mg, caffeine 60 mg. Other ingredients: vegan capsule; lubricant: magnesium salts of fatty acids. May contain traces of oats, barley, wheat (GLUTEN), ribs, milk (MILK) or soy (SOY). Caution: Contains caffeine! The product is not suitable for children, pregnant women and nursing mothers. The product is not a substitute for a balanced diet. Keep out of the reach of children. Contains caffeine. Store in a dry, cool place, away from heat, light, and moisture. Net quantity: 90 capsules. *Values are given per serving. **Oligomeric proanthocyanidins.

Used by Elite Athletes

I take this supplement before training because it gives me that extra boost of energy I need to tackle even the toughest sessions. It also helps me stay focused during races and cuts down on fatigue, which lets me perform at my best in mountain running competitions.

Claudio Díaz Castán

I have been supplementing with Fusion for 3 years now especially before hard sessions and before / during races. I find a noticeable difference when I take it in a reduction of perceived exertion and a significant delay in fatigue. I implement it as a supplement before threshold / max effort sessions.

Patrick Delorenzi

Fusion is the perfect supplement to help me during my pre-competition tapering period. Fusion helps me burn fat more efficiently while maintaining optimal energy levels.

Émile Blondel-Hermant

Great product. I feel more focused, less mentally tired, and I have more stamina. I also appreciate how clean it is: natural ingredients, no doping, and it goes down really well.

Nicolas Barraquand

As an elite cyclist, I use Fusion during heavy training blocks. It helps me stay sharp even when fatigue builds up — I recover faster, stay mentally focused late in sessions, and feel a clean energy boost without any crash. It’s a key part of how I manage training load and maintain performance.

Le Flochmoën Antoine

FUSION is the supplement I most often use before long training sessions. These are LSD (long slow distance training) sessions or Ironman-specific workouts, where the intensity is somewhat lower.

Strahinja Trakić

Read all reviews

Who Should Use Fusion?

Built for endurance, trusted for weight control — perfect for any athlete looking to feel lighter and faster.

Whether you’re a cyclist pushing for a better power-to-weight ratio, a runner looking to improve performance, or a triathlete pushing through a high-stress training schedule, Fusion helps you stay lean while boosting your endurance.

Already have your fueling strategy dialed in and looking for more? Fusion is your next move.

How Does Fusion Work?

Fusion combines natural stimulants and adaptogens to help you burn fat, increase energy, and stay in peak condition by:

Enhancing metabolism and fat oxidation
Boosting ATP energy levels and VO2 max
Reducing stress and water retention

This formula helps you stay lean and energized — without aggressive ingredients.

You’ll notice increased fat burn and reduced water weight within the first week. After two weeks, adaptogens reach full effect, helping you increase VO2 max, reduce stress, and recover faster.

Green Tea Extract

Rich in polyphenols — especially catechins — green tea helps improve metabolic flexibility and fat oxidation. This means your body can use more fat instead of carbohydrates for fuel, preserving glycogen stores. It also improves glucose tolerance and insulin sensitivity, allowing for more efficient energy use. Some studies show a caffeine-like increase in perceived energy without overstimulation. Thanks to increased mitochondrial ATP production, green tea extract supports sustained energy output during endurance activities.

Ginseng

A natural energizer that helps reduce fatigue and elevate energy levels. Ginseng enhances cellular energy production and reduces oxidative stress, helping athletes feel less drained during and after exercise. It's especially useful for long training periods when mental and physical fatigue starts to build up.

Rhodiola

Protects the body from stress, reduces fatigue, increases psychophysical strength, and improves mental processes. Increasing VO2 max through an improved stress response is the best long-term progress strategy in endurance sports.

Cayenne Pepper Extract

Known for its thermogenic effect, cayenne increases fat metabolism and can help your body burn more calories. It activates the TRPV1 receptor, which enhances the conversion of stored fat into energy and slightly raises body temperature — giving your performance a subtle but valuable metabolic boost.

Ginger Extract

Ginger is a powerful ingredient that reduces muscle soreness and accelerates recovery. It also boosts circulation, improving the delivery of oxygen and nutrients to muscles. As a mild thermogenic and natural stimulant, ginger offers a gentle energy lift without overstimulation. It may even reduce stomach discomfort from high-carb fueling.

Grape Seed Extract

Although research is still limited, grape seed extract is believed to improve blood circulation and potentially aid in reducing body fat. While results vary, it’s included for its possible synergistic role in supporting endurance metabolism and vascular function.

Dandelion Extract

A natural diuretic that helps flush out excess sodium and reduce water retention. This can lead to a leaner appearance and reduced bloating, especially during high-carb or salt-heavy phases.

Caffeine

Caffeine improves focus, increases fat utilization, and delays fatigue by reducing the perception of effort. It also enhances carbohydrate absorption, supports dopamine release, and provides a proven ergogenic effect.

Recommended Use

Take 3 capsules with water approximately 20 minutes before exercise.

On non-training days, take 3 capsules in the morning.

After three months of taking the product, it is recommended to take a 3-4 week break.

Instructions on how to combine different adaptogen products are found on this link.

WARNING! The use of this product is not recommended for people who:

- use antihypertensives and blood thinners — in this case, we advise against the use of this product and recommend that you consult your doctor, who knows you best, or the specialist who prescribed the medication;
- are sensitive to stimulants in any way!

At 4Endurance, our mission is simple

To provide elite-level nutrition at accessible prices for all. We follow the latest science in sports nutrition and use only high-quality ingredients that support your performance. From amateur enthusiasts to professional teams, we support athletes of all levels in reaching their goals.

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