More than 4.7 million customers from all over the world ⭐⭐⭐⭐⭐
A top product for losing weight, before the holiday I needed a little help in shaping my figure and I can guarantee that it really works :)
379 Verified reviewsNature’s Finest already has over 4,7 million customers from all over the world!
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.
OK!FatBurn – dietary 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
| Per 5g | |
| Vitamin C | 250 mg (312 % NRV*) |
| ID-alG ™ | 200 mg |
| L-carnitine | 150 mg |
| L-thyrosine | 100 mg |
* NRV = nutritional reference value
Why Independent Testing Is Essential At Nature’s Finest, we believe that wellness starts with trust. That’s why every batch of our supplements undergoes independent third-party testing—so you can feel confident knowing you’re getting safe, effective, and precisely formulated products.
Here’s what our testing covers:
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.
A top product for losing weight, before the holiday I needed a little help in shaping my figure and I can guarantee that it really works :)
Money-back guarantee for 60 days
Free shipping for orders from £50.00
Delivery within 2 working days
Questions? Call us: 020 8089 0131
Our customers also confirm that it works
4.9 / 5
Amazing OK!FatBurn for body shaping, you don't even need to change your diet and it works! Of course, I like to workout a little, so the effects are even better :)
A top product for losing weight, before the holiday I needed a little help in shaping my figure and I can guarantee that it really works :)
With the help of this product, I lost almost 8 pounds in one month, it is really effective!
After just a week of drinking OK!FatBurn, I already have way fewer cravings, and I’ve even noticed a bit of fat loss, especially around my stomach.
Controls fat and carbohydrate digestion
Supports reduced absorption of dietary fats and carbohydrates, helping you manage what your body stores.
Supports fat metabolism
Formulated with active compounds that contribute to the normal breakdown and use of fat for energy.
Encourages steady energy levels
Backed by ingredients that play a role in energy metabolism, helping you stay focused and active throughout the day.
Even if you’re eating mindfully, today’s food environment works against you. Processed meals, hidden sugars, and refined fats are everywhere—often in portions much larger than your body needs.
And even “healthy” options can contain ingredients that push your body into storage mode instead of fat-burning mode.
The real challenge?
It’s not just what you eat—it’s how your body processes and absorbs it.
Your digestive system breaks food down into components like sugars and fats, and when you consume more than your body can use, the excess is stored. Over time, this can lead to weight gain.
1. Blocks up to 77% of carbohydrate-digesting enzymes
Thanks to ID-alG™, a patented brown seaweed extract, the product reduces the activity of the enzyme amylase, which is responsible for breaking down complex carbohydrates.¹
2. Reduces fat breakdown by up to 63%
ID-alG™ also helps limit the action of lipase, the enzyme responsible for digesting fats.¹ This may help reduce fat absorption from meals.
3. Clinically demonstrated results
In clinical studies, ID-alG™ was shown to support weight and fat reduction when used consistently over 8 weeks.¹
4. Supports fat metabolism and energy production
With the added benefits of L-carnitine and L-tyrosine, two amino acids involved in fat transport and energy support, this formula helps the body make better use of stored fat during physical activity.
5. With antioxidant support from Vitamin C
Vitamin C contributes to the protection of cells from oxidative stress and supports the normal function of the immune system, skin, and energy metabolism.⁴
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.
Made from scientifically proven active ingredients
ID-alG™ is an extract of the brown seaweed Ascophyllum nodosum, which is rich in long-chain polyphenols called phlorotannins. They help to inhibit the action of the two main digestive enzymes, lipase and amylase, and block up to 77%* of carbohydrate digestion and 63%* of fat digestion.
L-carnitine is an amino acid that is crucial for fat metabolism because it ensures that long-chain fatty acids are transported to the mitochondria where they are converted into energy.
L-Tyrosine contributes to the normal synthesis of catecholamines, including adrenaline, noradrenaline and dopamine.
Vitamin C contributes to the protection of cells from oxidative stress and is also essential for the formation of collagen.
Traceability of our raw materials
Discover the nature in our supplements! We carefully select and monitor every ingredient to ensure optimal performance, backed by proven scientific effectiveness. Our commitment to transparent traceability guarantees the integrity and excellence of all the elements in our products. Our products are IFS Food Global Markets certified under registration no.: 00063/0 and ECO certificat under certified no.: EPR-26420/22-1.
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 and we will refund your money.
4,8 / 5 
Reviews (379)Enjoy your favourite foods and lose weight without feeling guilty!
With the main active ingredient ID-alG™ clinically proven to help with body fat loss and associated weight gain. ID-alG™ is a brown seaweed extract that inhibits the activity of two major digestive enzymes, lipase and amylase.
It is designed for anyone who wants to eliminate excess weight and fat and has difficulty following diets or reducing calorie intake.
Vitamin C (ascorbic acid), ID-alG™, natural lemon flavour, L-carnitine, L-tyrosine, natural beetroot colour (1,5 %), sweetener steviol glycosides.
OK!FatBurn has a refreshing lemon taste.
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.
No worries! If the product does not meet your expectations, we offer a 60-day refund.
A top product for losing weight, before the holiday I needed a little help in shaping my figure and I can guarantee that it really works :)
379 Verified reviewsNature’s Finest already has over 4,7 million customers from all over the world!
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.
OK!FatBurn – dietary 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
| Per 5g | |
| Vitamin C | 250 mg (312 % NRV*) |
| ID-alG ™ | 200 mg |
| L-carnitine | 150 mg |
| L-thyrosine | 100 mg |
* NRV = nutritional reference value
Why Independent Testing Is Essential At Nature’s Finest, we believe that wellness starts with trust. That’s why every batch of our supplements undergoes independent third-party testing—so you can feel confident knowing you’re getting safe, effective, and precisely formulated products.
Here’s what our testing covers:
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.
A top product for losing weight, before the holiday I needed a little help in shaping my figure and I can guarantee that it really works :)
Money-back guarantee for 60 days
Free shipping for orders from £50.00
Delivery within 2 working days
Questions? Call us: 020 8089 0131
Customer reviews
OK!FatBurn – dietary 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
| Per 5g | |
| Vitamin C | 250 mg (312 % NRV*) |
| ID-alG ™ | 200 mg |
| L-carnitine | 150 mg |
| L-thyrosine | 100 mg |
* NRV = nutritional reference value
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 dietary supplement 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.
Why choose Nature`s Finest?
15
years of tradition
400+
unique products
50+
patented active ingredients
3mil+
satisfied customers
We believe in the perfection of nature. Our commitment extends to responsible sourcing of raw materials, including sustainability, ethics, and fair business principles. We prioritize eco-friendly packaging to reduce our carbon footprint.
The effectiveness of our products is confirmed by studies and research that are verifiable and repeatable. All our products are tested in independent laboratories, as our goal is to provide our customers with only the highest quality and effective products for their money.
Nature offers effective solutions for many challenges we face. Our experienced development team uses and combines these exceptional substances in our products so that the body can best utilize them. Active ingredients in our products are present in proven effective amounts, not just in small and negligible percentages.
Our products are tested through various user studies and trials that ensure their safety and effectiveness. We always listen carefully to the feedback from our customers and consider their opinions, criticisms, and suggestions to ensure that our products are truly tailored to their needs.
We are proud to have only the best experts in the field of nutrition and food supplements on our team, who ensure the development and exceptional quality of our products. With outstanding dedication, they lead studies and research and collaborate with external laboratories, inspection bodies, and other experts to ensure the highest quality and safety of our products.
With rich experience and professional knowledge of the industry, our experts strive to provide Nutrisslim customers with the most innovative products, thus maintaining its status as one of the leading companies in the field of nutrition and food supplements.
M.Sc. Nutrition Engineering
Food and Nutrition Engineer
#WeAreNature
»Committed to delivering the most natural products to your home«
For over 15 years, Nature’s Finest has been dedicated to offering natural solutions for those who want to overcome challenges and discomforts with a healthy lifestyle. We use only 100% natural ingredients, traditionally grown without additives or unnecessary processing. Whenever possible, we use ingredients from organic farming, supported by the SI-EKO certificate. This ensures that no genetically modified organisms (GMOs) or pesticides are used.
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