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Delivery within 2 work days
Free shipping over £50.00
60-day refund policy
More than 4.7 million customers from all over the world
Delivery within 2 work days
Free shipping over £50.00
60-day refund policy
More than 4.7 million customers from all over the world
Delivery within 2 work days
Free shipping over £50.00
60-day refund policy
More than 4.7 million customers from all over the world
Delivery within 2 work days
Free shipping over £50.00
60-day refund policy
More than 4.7 million customers from all over the world
020 8089 0131

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Roksana P.
Roksana P.
Star Star Star Star Star
5 / 5

I take this in the morning before pilates class. It supresses appetite and prevents fatigue.

Magnesium + Guarana + B-complex + Vitamin C

Food supplement with sweetener
Star Star Star Star Star
4.84 / 5
Verified 101 Verified reviews

Suppress fatigue and strengthen immunity with the power of guarana

  • Magnesium citrate for optimal bioavailability
  • Triple immune support: B-complex, vitamin C and magnesium
  • Guarana suppresses fatigue
  • Guarana strengthens immunity
  • Contributes to the reduction of tiredness and fatigue¹
  • Contributes to the normal function of the immune system³
  • Suppresses feeling of hunger²
  • Traditionally used to contribute to fat metabolism²
  • No clumping, no residue, mixes completely every time
Nature’s Finest ima že več kot 4,7 milijona strank po vsem svetu!
Neto 150 g | for 30 days
How to Use

The recommended daily amount is 5 g (1 scoop). Mix in a glass of water and consume as soon as the powder dissolves.

Warning:

A food supplement is not a substitute for a balanced, varied diet and a healthy lifestyle. The recommended daily dosage must not be exceeded. Keep out of reach of children!

We do not recommend pregnant women and nursing mothers to consume the product.

Due to natural variations in the properties of the active ingredients, the colour, taste and smell of the product may vary slightly from batch to batch. These changes do not affect the overall quality and performance of the product.

Key Ingredients

Magnesium + Guarana + B-complex + Vitamin C – a food supplement with sweetener.

Ingredients: inulin, magnesium citrate, vitamin C, (ascorbic acid), mango flavour (3 %), stabilizer: cellulose, guarana (paullinia cupana) extract, B-complex mix (Thiaminmononitrate, Riboflavine, Pyridoxine hydrochloride, Cyanocobalamin, Folic acid, Calcium-D-pantothenate, Nicotine amid), sweetener: steviol glycosides from stevia.

Nutritional Value
per dosage (5 g) NRV %
Magnesium 187 mg 50 %
Vitamin B1 0,6 mg 50 %
Vitamin B2 0,7 mg 50 %
Vitamin B6 0,7 mg 50 %
Vitamin B12 1,25 μg 50 %
Folic acid 100 μg 50 %
Pantothenic acid 3 mg 50 %
Niacin 8 mg 50 %
Vitamin C 500 mg 625 %

* NRV = Nutritional Reference Value

Certifications
Why Independent Testing Is Essential - At Nature’s Finest, we believe that wellness starts with trust. Here’s what our testing covers:
  • Ingredient Precision: We verify that the nutrients listed on our labels are present in the exact amounts promised.
  • Purity & Cleanliness: Each product is screened for substances such as heavy metals (including mercury, lead, and arsenic), common allergens (like soy, dairy, nuts, and gluten), and microbial threats like E. coli and salmonella.
  • Nutrient Verification: We confirm that both macronutrients and micronutrients are present and potent.
Explore our IFS Food Standard certification—the highest level of quality assurance in the industry—and see why Nature’s Finest stands above the rest. View our certification here.
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Delivery in 2 business days
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Reviews

4.84
★ ★ ★ ★ ★
Based on 101 reviews
5★
91
4★
7
3★
1
2★
1
1★
1
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Everything you need to know:

Is this powerful formula a good choice for me?

Yes, this formula is appropriate for any adult, wanting to take care of their body. It is especially popular for:

  • people struggling with fatigue,
  • active people who need energy and muscle support1,
  • busy people managing demanding schedules
  • young parents needing nutritional support,
  • anyone wanting immune3 support during intense training.

When you need more than just a quick energy boost from an energy drink, this formula delivers more.

Choose this formula over individual supplements for its many benefits and convenience.

How is this different from regular energy drinks or caffeine supplements?

This formula is so much more powerful than an energy drink and allows for long-term results.

Guarana suppresses fatigue and strengthens immunity, while magnesium contributes to normal muscle function and electrolyte balance. Vitamin C contributes to the normal function of the immune system and the protection of cells from oxidative stress.

Riboflavin contributes to normal energy-yielding metabolism and normal functioning of the nervous system.

Will this help me with my workouts?

Absolutely. Guarana suppresses fatigue, while magnesium contributes to normal muscle function and normal protein synthesis. Vitamin C contributes to maintain the normal function of the immune system during and after intense physical exercise.

Vitamin B6 contributes to normal protein and glycogen metabolism, and magnesium contributes to electrolyte balance ― all essential for performance and recovery.

Can this support my immune system during busy or stressful periods?

Yes, this formula provides triple immune support. Guarana strengthens immunity, while vitamin C and B-complex contribute to the normal function of the immune system.

Additionally, both vitamin C and riboflavin contribute to the protection of cells from oxidative stress, helping protect your cells during demanding times.

Our customers also confirm it works

star star star star star 4.9 / 5
Nicole
star star star star star 5/5

I’m busy and stressed a lot, but I still try to work out every day. This helps prevent fatigue and supports my muscles. I love it.

Nicole
Lily
star star star star star 5/5

I always drink this formula if I have a long, stressful day ahead of me. I feel energetic even without any coffee and I can even work out in the evening!

Lily
Petra
star star star star star 5/5

This has truly saved my immune system this winter. I tend to struggle with it and I’m prone to getting a cold, but not this time! I also feel less tired.

Petra
Nick
star star star star star 5/5

I’m very active so I love that this has guarana for natural energy plus all the vitamins for immune support. The mango flavour is amazing.

Nick
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Dealing with constant fatigue, tiredness and an insatiable appetite?

Discover your dream formula for less appetite2, immune system3 and fatigue suppression3

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Traditional guarana and modern nutrition

Guarana suppresses fatigue and is traditionally used to contribute to fat metabolism. We’ve enhanced it with magnesium that contributes to normal muscle function, plus with vitamin C and B-complex vitamins, all essential for your body.

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For active people

This formula was made with active people in mind.

Magnesium contributes to normal muscle function and electrolyte balance. It contributes to normal protein synthesis while vitamin B6 contributes to normal protein and glycogen metabolism. This combination supports both muscle function and recovery.

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Stop struggling constant tiredness¹

This formula features guarana that suppresses fatigue. Magnesium and vitamin C contribute to the reduction of tiredness and fatigue and normal energy-yielding metabolism.

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Support your immune system³

Your immune system needs extra support in winter or in stressful periods, especially if you don’t have a varied and balanced diet.

Guarana strengthens immunity, while vitamin B12 contributes to the normal function of the immune system. Both vitamin C and B-complex contribute to the protection of cells from oxidative stress.

Feature icon

Natural mango flavour without added sugar

Our refreshing mango taste makes this formula something you’ll actually enjoy taking daily.

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Product option image

Why powder form is better

  • Faster absorption
    Liquid supplements allow for rapid absorption of guarana, magnesium, vitamin C and B vitamins, meaning you feel the effects more quickly.
  • Complete bioavailability
    Our advanced formula ensures all ingredients dissolve completely.
  • Easy integration
    Add to your pre-workout routine, morning smoothie, or afternoon energy boost.
  • Consistency drives results
    The delicious mango flavour and easy mixing make daily use effortless, and with comprehensive formulas like this, consistency is key for maximum benefits.

Start taking your guarana today

If you start taking this formula TODAY:

  • You suppress fatigue and strengthen immunity²
  • You start suppressing appetite today²
  • You support normal muscle function1 and electrolyte balance¹
  • You contribute to the normal function of the immune system³
  • You get protection from oxidative stress³

If you start taking it later:

  • You continue relying on coffee to feel less tired
  • You miss the immune-strengthening benefits of guarana
  • You delay supporting your muscle function
  • You postpone the benefits of traditional guarana with vitamins

Made from quality ingredients

Magnesium

1. Magnesium

Magnesium contributes to the normal functioning of the nervous system, muscle function, normal energy-yielding metabolism, and also contributes to electrolyte balance.

Guarana

2. Guarana

Guarana contributes to fat metabolism, and suppresses feeling of hunger and fatigue, making this natural extract an efficient help in weight control.

Vitamin C

3. Vitamin C

Vitamin C plays a role in the protection of cells from oxidative stress. It contributes to the functioning of the nervous system, has a role in the functioning of the immune system and contributes to the reduction of tiredness and fatigue . Vitamin C also contributes to normal collagen formation.

B-complex

4. B-complex

The B complex is a group of vitamins B1, B2, B6, B12, folic acid, pantothenic acid and niacin, which are important for our nervous system. In addition to their common function, each of the B vitamins has other important roles in our bodies.

Mango powder

5. Mango powder

Mango powder for a sweet taste. Made from real dehydrated mango powder, it stays fresh and is ready to use immediately.

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Traceability of our raw materials

We select every ingredient with the utmost care and monitor it closely to ensure optimal efficacy—supported by scientifically proven effectiveness.
Our commitment to transparent traceability guarantees the integrity and excellence of every component in our products.
Our products are certified in accordance with the IFS Standard under registration number: 00063/0, and by KON-CERT under certificate number: EPR-26420/22-1.

High-quality ingredients

Carefully selected, pure formulation.

Carefully selected, pure formulation

Environmentally friendly packaging.

Less waste, more care for the planet

Third-party tested according to verified standards.

60-days-Money-back-Badge-Landing_EN-white-300x300-1-2.png

60-Day Money-Back Guarantee

To make your purchase risk-free, we offer a 60-day money-back guarantee.
If you’re not completely satisfied with the product, simply contact us—we’ll refund your money.

Magnesium + Guarana + B-complex + Vitamin C

Magnesium + Guarana + B-complex + Vitamin C

star star star star half star 4.84 / 5 check icon Verified reviews (101)

Traditional guarana with essential vitamins and minerals

  • Guarana suppresses fatigue
  • Guarana strengthens immunity
  • Contributes to normal muscle function¹
  • Contributes to the normal function of the immune system³
  • Contributes to normal energy-yielding metabolism³
  • Great for physically active people

Frequently asked questions from our users

FAQ

How and why does it work?

This formula provides guarana that suppresses fatigue and strengthens immunity, enhanced with magnesium for muscle function and energy metabolism, vitamins for immune support and cellular protection, plus B-complex.

FAQ

Who is it for?

For fitness enthusiasts needing sustained energy2 support and immune protection during training3, active professionals managing demanding schedules and anyone seeking for help fatigue and appetite reduction2.

FAQ

What does it taste like?

Nature’s Finest Magnesium + Guarana + B-complex + Vitamin C tastes like mango.

FAQ

What ingredients does it contain?

Magnesium, Guarana, B-complex, Vitamin C, natural mango flavour.

FAQ

How long does shipping take?

We will do our best to process your order the same day and send it for delivery. On average, packages are delivered in 2 business days.

FAQ

What if I don't like it?

No worries! If the product does not meet your expectations, we offer a 60-day refund.

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Next
Roksana P.
Roksana P.
Star Star Star Star Star
5 / 5

I take this in the morning before pilates class. It supresses appetite and prevents fatigue.

Magnesium + Guarana + B-complex + Vitamin C

Food supplement with sweetener
Star Star Star Star Star
4.84 / 5
Verified 101 Verified reviews

Suppress fatigue and strengthen immunity with the power of guarana

  • Magnesium citrate for optimal bioavailability
  • Triple immune support: B-complex, vitamin C and magnesium
  • Guarana suppresses fatigue
  • Guarana strengthens immunity
  • Contributes to the reduction of tiredness and fatigue¹
  • Contributes to the normal function of the immune system³
  • Suppresses feeling of hunger²
  • Traditionally used to contribute to fat metabolism²
  • No clumping, no residue, mixes completely every time
Nature’s Finest ima že več kot 4,7 milijona strank po vsem svetu!
Neto 150 g | for 30 days
How to Use

The recommended daily amount is 5 g (1 scoop). Mix in a glass of water and consume as soon as the powder dissolves.

Warning:

A food supplement is not a substitute for a balanced, varied diet and a healthy lifestyle. The recommended daily dosage must not be exceeded. Keep out of reach of children!

We do not recommend pregnant women and nursing mothers to consume the product.

Due to natural variations in the properties of the active ingredients, the colour, taste and smell of the product may vary slightly from batch to batch. These changes do not affect the overall quality and performance of the product.

Key Ingredients

Magnesium + Guarana + B-complex + Vitamin C – a food supplement with sweetener.

Ingredients: inulin, magnesium citrate, vitamin C, (ascorbic acid), mango flavour (3 %), stabilizer: cellulose, guarana (paullinia cupana) extract, B-complex mix (Thiaminmononitrate, Riboflavine, Pyridoxine hydrochloride, Cyanocobalamin, Folic acid, Calcium-D-pantothenate, Nicotine amid), sweetener: steviol glycosides from stevia.

Nutritional Value
per dosage (5 g) NRV %
Magnesium 187 mg 50 %
Vitamin B1 0,6 mg 50 %
Vitamin B2 0,7 mg 50 %
Vitamin B6 0,7 mg 50 %
Vitamin B12 1,25 μg 50 %
Folic acid 100 μg 50 %
Pantothenic acid 3 mg 50 %
Niacin 8 mg 50 %
Vitamin C 500 mg 625 %

* NRV = Nutritional Reference Value

Certifications
Why Independent Testing Is Essential - At Nature’s Finest, we believe that wellness starts with trust. Here’s what our testing covers:
  • Ingredient Precision: We verify that the nutrients listed on our labels are present in the exact amounts promised.
  • Purity & Cleanliness: Each product is screened for substances such as heavy metals (including mercury, lead, and arsenic), common allergens (like soy, dairy, nuts, and gluten), and microbial threats like E. coli and salmonella.
  • Nutrient Verification: We confirm that both macronutrients and micronutrients are present and potent.
Explore our IFS Food Standard certification—the highest level of quality assurance in the industry—and see why Nature’s Finest stands above the rest. View our certification here.
£10.29
-0%
Subscription
One-time purchase

Switch to subscription and save
For just you get the same. A simple way to enjoy the best prices. You can change or cancel your subscription at any time!

Add to cart ➝
Return guarantee icon 60-day money-back guarantee
Free delivery icon Free delivery over £50.00
Delivery in 2 business days
visa mastercard american_express paypal

Questions? Call us: 020 8089 0131

Customer Reviews

★ ★ ★ ★ ★
101
Verified reviews
4.8/5
Previous
★ ★ ★ ☆ ☆
Published 11 months ago by: iwona swiderska
Thank You ❤️
★ ★ ★ ★ ★
Published 11 months ago by: Stephen Corbett
Absolutely brilliant website and Absolutely brilliant products highly recommended
★ ★ ★ ★ ★
Published 10 months ago by: Kathrin Morris
Great thanks
★ ★ ★ ★ ★
Published 9 months ago by: Pennie Mirembe #14
Good products
★ ★ ★ ★ ★
Published 10 months ago by: Mr A Brewster
Product description clear and easy to understand. Very fairly priced compared to similar products.
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The recommended daily amount is 5 g (1 scoop). Mix in a glass of water and consume as soon as the powder dissolves.

Warning:

A food supplement is not a substitute for a balanced, varied diet and a healthy lifestyle. The recommended daily dosage must not be exceeded. Keep out of reach of children!

We do not recommend pregnant women and nursing mothers to consume the product.

Due to natural variations in the properties of the active ingredients, the colour, taste and smell of the product may vary slightly from batch to batch. These changes do not affect the overall quality and performance of the product.

Magnesium + Guarana + B-complex + Vitamin C – a food supplement with sweetener.

Ingredients: inulin, magnesium citrate, vitamin C, (ascorbic acid), mango flavour (3 %), stabilizer: cellulose, guarana (paullinia cupana) extract, B-complex mix (Thiaminmononitrate, Riboflavine, Pyridoxine hydrochloride, Cyanocobalamin, Folic acid, Calcium-D-pantothenate, Nicotine amid), sweetener: steviol glycosides from stevia.

per dosage (5 g) NRV %
Magnesium 187 mg 50 %
Vitamin B1 0,6 mg 50 %
Vitamin B2 0,7 mg 50 %
Vitamin B6 0,7 mg 50 %
Vitamin B12 1,25 μg 50 %
Folic acid 100 μg 50 %
Pantothenic acid 3 mg 50 %
Niacin 8 mg 50 %
Vitamin C 500 mg 625 %

* NRV = Nutritional Reference Value

Frequently asked questions from our users

How long can I take it? Can I do the cure?

Regular use is recommended. The recommended daily amount or dose should not be exceeded.

When is the best time to take it?

I recommend that you take the product in the morning.

Can pregnant women and nursing mothers consume it?

Pregnant and lactating women are discouraged from use.

Is it suitable for vegans?

Yes, the product is suitable for vegans and vegetarians.

Can I take it alongside medication?

Dietary supplements are foods that are intended to supplement your normal diet, if you are taking any medication, please consult your personal doctor before taking any dietary supplement.

What can I do if I don't like the taste? And can I mix it with boiling water

If you don’t like the taste, you can mix it into juice, smoothies or dissolve it in more water. We do not recommend consuming this product in hot water as this may destroy the effect of the active ingredients and vitamins.

Can children consume it? From what age can I consume the product?

The product may be consumed by persons over 15 years of age.

Diabetics and other health conditions?

This product contains maltodextrin, which increases blood sugar levels and is therefore not recommended for diabetics and in case of associated conditions, a personal physician should be consulted.

Are there possible side effects?

The product is usually well tolerated and many users report no side effects. However, it is important to understand that each person reacts differently to dietary supplements. Consult a nutritionist or doctor before use, especially if you have any health problems or are taking medication.

Advice from our experts in addition to eating the product?

1. regular physical activity 2. balanced diet 3. quality sleep 4. adequate hydration

Is the product suitable for both women and men?

Yes, the product is suitable for women and men.

Is the product suitable for people with high blood pressure and thyroid problems?

Persons with high blood pressure are advised to consult their physician before using this product as it may affect blood pressure.

Product not well mixed, lumps, contents floating on water?

Clumps are a perfectly normal occurrence in a powdered product that absorbs moisture. Floating contents are insoluble plants which do not affect the quality of the product. If the contents do not dissolve in water and/or bother you, you can remove them and they can also be eaten.

Why choose Nature’s Finest?

15

Years of tradition

400+

Unique products”

50+

Patented active ingredients

3mil+

Satisfied customers

Nature

We believe in the perfection of nature. Our commitment extends to the responsible sourcing of raw materials, including sustainability, ethics, and fair business practices. To reduce our carbon footprint, we use environmentally friendly packaging.

The effectiveness of our products is confirmed by verifiable and reproducible studies and research. All of our products are tested in independent laboratories, as our goal is to offer our customers only the highest-quality and most effective products for their money.

 
 

Nature offers effective solutions to many of the challenges we face. Our experienced development team harnesses and combines these exceptional substances in our products so the body can make optimal use of them. The active ingredients in our products are included in proven effective amounts—not just in small, negligible quantities.

We test our products through various user studies and trials to ensure their safety and effectiveness. We always listen closely to our customers’ feedback and take their opinions, reviews, and suggestions into account to ensure our products are truly tailored to their needs.

Meet our product development experts

We are proud that our team consists exclusively of top experts in nutrition and natural formulations, ensuring the development and outstanding quality of our products. With great dedication, they conduct studies and research and work closely with external laboratories, testing institutes, and other specialists to guarantee the highest quality and safety of our products.

Thanks to their extensive experience and industry expertise, our experts are committed to providing Nutrisslim customers with the most innovative products and to maintaining our status as one of the leading companies in the field of nutrition and dietary supplements.

Meta Bizjak

M.Sc. in Nutritional Engineering

Pia Fistrovič

Food and Nutrition Engineer

#WeAreNature

»Committed to bringing the most natural products to your home«

For over 15 years, Nature’s Finest has been dedicated to providing natural solutions for everyone who wants to overcome lifestyle-related challenges and discomforts. We use only 100% natural ingredients, produced traditionally, without additives or unnecessary processing. Whenever possible, we choose organically grown ingredients certified under SI-EKO-001.

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