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Magdalena Rybarikova - tennis player
Magdalena Rybarikova - tennis player
Star Star Star Star Star
5 / 5

A top product to help me keep my cravings in check and maitain my form.

OK!FatBurn 1+1 FREE

Food supplement with sweetener
Star Star Star Star Star
4.82 / 5
Verified 382 Verified reviews

An effective formula that contributes to weight loss

  • Inhibits up to 77% of carbohydrate-digesting enzymes ¹*
  • Inhibits up to 63% of fat-digesting enzymes ¹*
  • Helps eliminate fat deposits and consequently contributes to weight loss ¹
  • Contributes to normal energy-yielding metabolism ⁴
  • With added power of L-Tyrosine and L-Carnitine
  • After 8 weeks, 76% users say ID-alG™ induces weight-loss**
  • 72% would continue using ID-alG™**
*  In tubo test of the inhibition properties of ID-alG™ on pancreatic lipase and bacterial amylase.
** Evaluation of ID-alG™’s weight management effect on overweight women. Monocentric, randomized, placebo controlled clinical study run in March 2010, on 56 women using 400 mg of ID-alG™ daily for 8 weeks
Neto 300 g | for 30 days
How to Use

Twice a day, mix 5 g (1 scoop) in a glass of water and drink. We recommend that you drink it before the main meals. Weighing is recommended for accurate dosing.

Warning:

The recommended daily intake or dose should not be exceeded. A foodsupplement is not a substitute for a balanced and varied diet. Ingestion during pregnancy and breastfeeding is not recommended. Keep out of reach of children!

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

OK!FatBurn – food supplement with sweetener.

Tapioca starch, sweetener erythritol, vitamin C (ascorbic acid), ID-alG ™ [(seaweed extract (Ascophyllum nodosum), grape extract powder (Vitis vinifera, seeds)], lemon flavor (4%), L-carnitine, L-tyrosine, stabilizer: cellulose, beetroot concentrate (maltodextrin, beetroot powder (Beta vulgaris)) (1.5%), Sweetener: steviol glycosides from stevia

Nutritional Value
Active ingredients Per 5g
Vitamin C 250 mg (312 % NRV*)
ID-alG ™ 200 mg
L-Carnitine 150 mg
L-Tyrosine 100 mg

* 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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Questions? Call us: 0818 882 208

Reviews

4.82
★ ★ ★ ★ ★
Based on 382 reviews
5★
346
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Everything you need to know:

Which ingredient helps me block fat and carb absorption?

ID-alG™ is a patented brown seaweed extract that blocks a certain number of enzymes that digest carbohydrates and fats. This reduces fats and carbs assimilation and contributes to significant weight loss. 1

What makes this weight loss formula so effective?

OK!Fatburn is an effective weight loss formula that inhibits carb and fat digestion enzymes with the power of ID-alG™. The triple-action formula contributes to normal energy-yielding metabolism⁴ with added power of L-tyrosine and L-Carnitine. Studies confirm significant weight loss correlated with fat mass. 1

How do digestive enzymes affect my weight loss efforts?

90% of lipid (fat) intake is hydrolyzed by lipases, while carbohydrate digestion is mainly carried out by the amylases. ID-alG™ inhibits amylase and lipase, which means reduction of carbs and fat assimilation from the nutrients you consume.1

What results can I expect from using OK!Fatburn?

Studies show that 76% believe ID-alG™ induces weight-loss and 72% would continue using ID-alG™. Users experience visible effects after 8 weeks of use with significant reduction in carbs assimilation. Real customers report they lost weight with OK!Fatburn and their testimonials prove its effectiveness.1

Our customers also confirm it works

star star star star star 4.9 / 5
Margaret
star star star star star 5/5

Superb product to help with weight loss, I needed a little help with my body shape before my holiday and I can assure you it really works :)

Margaret
Eve
star star star star star 5/5

OK!FatBurn truly works! I of course like to do a bit of sport, so the effects are even better :)

Eve
Maya
star star star star star 5/5

I lost signifant weight with OK!Fatburn, it's incredible and I keep getting compliments!

Maya
Monica
star star star star star 5/5

I’ve been drinking this for a bit more than two months and my coworkers say I’ve slimmed down noticeably.

Monica
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Most people struggle with cutting carbs and fats when trying to lose weight

With OK!FatBurn even if your diet isn’t »perfect« you can still get results

ID-alG™ – patented brown seaweed extract for weight management

ID-alG™ is a unique, patented extract from brown seaweed with powerful benefits for weight control.

Its effectiveness comes from natural compounds called phlorotannins, which inhibit the activity of the two main digestive enzymes:

  • Lipase – the enzyme that digests fats

  • Amylase – the enzyme that digests carbohydrates

By blocking a large portion of both enzymes, ID-alG™ helps reduce the absorption of carbs and fats – the nutrients that make up over 85% of daily calorie intake.

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Product option image
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Blocks more than half of carbohydrate-digesting enzymes1

Thanks to ID-alG™, a patented brown seaweed extract, the product reduces the activity of the enzyme amylase, which is responsible for breaking down carbohydrates.¹

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Blocks more than half of fat-digesting enzymes1

ID-alG™ also helps limit the action of lipase, the enzyme responsible for digesting fats.¹

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Results, demonstrated by studies

In studies, ID-alG™ was shown to support weight loss, closely correlated with fat mass, and fat reduction when used consistently over 16 weeks.¹

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Consumers’ satisfaction

Preliminary study questionnaires assess the satisfaction of users:

  • 76% believe ID-alG™ induces weight-loss**
  • 72% would continue using ID-alG™**
  • 72% would buy ID-alG™**
** Evaluation of ID-alG™’s weight management effect on overweight women. Monocentric, randomized, placebo controlled clinical study run in March 2010, on 56 women using 400 mg of ID-alG™ daily for 8 weeks

 

All you need is 3 minutes a day

A smarter way to support your healthy lifestyle

Step 1

Mix one scoop of OK!FatBurn with 200 ml of water.

Step 2

Stir vigorously until completely dissolved (1 min).

Step 3

Drink twice a day with food or an empty stomach.

Product option image

Why you should start taking OK!Fatburn today

Starting OK!Fatburn TODAY:

  • You contribute to weight loss ¹
  • You reduce fat and carb assimilation with ID-alG™¹
  • You support body fat mass reduction¹
  • You enjoy in a delicious, self-care ritual
  • You boost your confidence immediately

Starting OK!Fatburn later:

  • You delay significant weight loss progress
  • You postpone fat and carb assimilation reduction
  • You delay body shape improvement progress

Made from quality ingredients

ID-alG™

1. ID-alG™

ID-alG™ is a combination of grape seed extract and brown seaweed (Ascophyllum nodosum) extract, which is rich in long-chain polyphenols called phlorotannins. Ascophyllum nodosum reduces fat absorption and helps eliminate fat deposits, which in turn affects body weight.

L-carnitine

2. L-carnitine

L-carnitine is an amino-acid derivative that plays a key role in fat metabolism in the body. It is a natural compound produced by the body and can also be obtained from certain foods and dietary supplements.

L-tyrosine

3. L-tyrosine

L-tyrosine contributes to the normal synthesis of catecholamines, including adrenaline, noradrenaline, and dopamine.

Vitamin C

4. Vitamin C

Vitamin C helps protect cells from oxidative stress, supports the nervous and immune systems, and helps reduce tiredness and fatigue. Vitamin C also contributes to normal collagen formation.

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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

Sorgfältig ausgewählte, reine Formulierung.

Carefully selected, pure formulation

Environmentally friendly packaging.

Less waste, more care for the planet

Third-party tested according to verified standards.

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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.

-50%
OK!FatBurn 1+1 FREE

OK!FatBurn 1+1 FREE

star star star star half star 4.82 / 5 check icon Verified reviews (382)

Enjoy your favourite foods without guilt and lose weight!

  • Inhibits up to 77% of carbohydrate digesting enzymes ¹
  • Inhibits up to 63% of fat digesting enzymes ¹
  • Helps eliminate fat deposits ¹
  • Added power of L-Tyrosine and L-Carnitine
  • Visible effect after 8 weeks of use

Frequently asked questions from our users

FAQ

How and why do they work?

With the main active ingredient ID-alG™, it has been proven to help lose body fat and therefore weight. ID-alG™ is a brown seaweed extract that inhibits the activity of two major digestive enzymes, lipase and amylase.

FAQ

Who is it for?

It is for anyone who wants to lose excess weight and fat and has difficulty following diets or reducing calorie intake.

FAQ

What ingredients does it contain?

Vitamin C (ascorbic acid), ID-alG™, natural lemon flavour, L-carnitine, L-tyrosine, natural beetroot colour (1,5 %), sweetener steviol glycosides.

FAQ

What does it taste like?

OK!FatBurn has a refreshing lemon taste.

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 4-6 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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-50%
Magdalena Rybarikova - tennis player
Magdalena Rybarikova - tennis player
Star Star Star Star Star
5 / 5

A top product to help me keep my cravings in check and maitain my form.

OK!FatBurn 1+1 FREE

Food supplement with sweetener
Star Star Star Star Star
4.82 / 5
Verified 382 Verified reviews

An effective formula that contributes to weight loss

  • Inhibits up to 77% of carbohydrate-digesting enzymes ¹*
  • Inhibits up to 63% of fat-digesting enzymes ¹*
  • Helps eliminate fat deposits and consequently contributes to weight loss ¹
  • Contributes to normal energy-yielding metabolism ⁴
  • With added power of L-Tyrosine and L-Carnitine
  • After 8 weeks, 76% users say ID-alG™ induces weight-loss**
  • 72% would continue using ID-alG™**
*  In tubo test of the inhibition properties of ID-alG™ on pancreatic lipase and bacterial amylase.
** Evaluation of ID-alG™’s weight management effect on overweight women. Monocentric, randomized, placebo controlled clinical study run in March 2010, on 56 women using 400 mg of ID-alG™ daily for 8 weeks
Neto 300 g | for 30 days
How to Use

Twice a day, mix 5 g (1 scoop) in a glass of water and drink. We recommend that you drink it before the main meals. Weighing is recommended for accurate dosing.

Warning:

The recommended daily intake or dose should not be exceeded. A foodsupplement is not a substitute for a balanced and varied diet. Ingestion during pregnancy and breastfeeding is not recommended. Keep out of reach of children!

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

OK!FatBurn – food supplement with sweetener.

Tapioca starch, sweetener erythritol, vitamin C (ascorbic acid), ID-alG ™ [(seaweed extract (Ascophyllum nodosum), grape extract powder (Vitis vinifera, seeds)], lemon flavor (4%), L-carnitine, L-tyrosine, stabilizer: cellulose, beetroot concentrate (maltodextrin, beetroot powder (Beta vulgaris)) (1.5%), Sweetener: steviol glycosides from stevia

Nutritional Value
Active ingredients Per 5g
Vitamin C 250 mg (312 % NRV*)
ID-alG ™ 200 mg
L-Carnitine 150 mg
L-Tyrosine 100 mg

* 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.
31,90€ 63,80€
-50%
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 4-6 business days
visa mastercard american_express paypal

Questions? Call us: 0818 882 208

Kundenbewertungen

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382
Verified reviews
4.8/5
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★ ★ ★ ★ ★
Published 2 years ago by: Angela K.
Very easy to use the site. Good service and communication
★ ★ ★ ★ ★
Published 2 years ago by: ALINA G.
★ ★ ★ ☆ ☆
Published 2 years ago by: Jim C.
Some benefits were noticeable, but I would like the effects to be more pronounced
★ ★ ★ ★ ★
Published 1 year ago by: June Wood
I love your product
★ ★ ★ ★ ★
Published 1 year ago by: Stuart Hitchmough
Fantastic product
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Twice a day, mix 5 g (1 scoop) in a glass of water and drink. We recommend that you drink it before the main meals. Weighing is recommended for accurate dosing.

Warning:

The recommended daily intake or dose should not be exceeded. A foodsupplement is not a substitute for a balanced and varied diet. Ingestion during pregnancy and breastfeeding is not recommended. Keep out of reach of children!

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.

OK!FatBurn – food supplement with sweetener.

Tapioca starch, sweetener erythritol, vitamin C (ascorbic acid), ID-alG ™ [(seaweed extract (Ascophyllum nodosum), grape extract powder (Vitis vinifera, seeds)], lemon flavor (4%), L-carnitine, L-tyrosine, stabilizer: cellulose, beetroot concentrate (maltodextrin, beetroot powder (Beta vulgaris)) (1.5%), Sweetener: steviol glycosides from stevia

Active ingredients Per 5g
Vitamin C 250 mg (312 % NRV*)
ID-alG ™ 200 mg
L-Carnitine 150 mg
L-Tyrosine 100 mg

* NRV = Nutritional Reference Value

Customer Reviews

  1. Angela K. –

    Very easy to use the site. Good service and communication

  2. ALINA G. –

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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