% OFFER OF THE WEEK – Premium Collagen 1+1 FREE!

More than 4.7 million customers from all over the world ⭐⭐⭐⭐⭐

Home Ikone NOVO_phone

020 8089 0131

Home Ikone NOVO_profile
Home Ikone NOVO_cart
Delivery within 2 work days
Free shipping over £50
100% satisfaction guarantee
60-day refund policy
-50%

Extreme Slim

4.92 / 5
302 Verified reviews
Treatment for quick body definition and elimination of excess weight

Reduces calorie intake that comes from carbohydrates and fats! Equal portions – half as many calories!

  • Clinical studies prove weight loss and fat loss
  • With the power of ID-alG ™ blocks up to 77%* of enzymes for digestion of carbohydrates = reduces calories obtained from food
  • Blocks up to 63%* of fat digestion enzymes
  • Maintains normal absorption of micronutrients such as vitamins and minerals
  • Enriched with L-tyrosine and L-carnitine
  • OK!WaterOut reduces excess water retention
  • Helps with weight loss
  • Reduces bloating and the appearance of heavy legs
  • For a more beautifully shaped body
  • Visible and lasting effect after 8 weeks of use

* Results may vary from person to person.

Net 300 g | for 30 days
How to use +
  • The first 15 days:

In the morning, put 2 scoops (10 g) of OK!WaterOut in a glass of water, mix and drink.

  • For the next 15 days:

Twice a day, before meals, add 5 g (1 scoop) of OK!FatBurn to a glass of water, stir and drink.

Key Ingredients +
  • OK!WaterOut – dietary supplement with sweetener.

Ingredients: Tapioca starch, stabilizer: cellulose, pineapple flavor, nettle leaf extract (Urtica dioica), elderberry extract (Sambucus nigra L.), beet concentrate (maltodextrin, beetroot powder (Beta Vulgaris)), knotweed extract (Polygonum aviculare L.), sweetener: steviol glycoside.

  • OK!FatBurn – dietary supplement with sweetener.

Ingredients: Tapioca starch, erythritol sweetener, vitamin C (ascorbic acid), ID-alG ™, natural lemon aroma, L-carnitine, L-tyrosine, anti-adherent: bamboo fibre, natural beetroot dye, sweetener steviol glycosides.

£32.90 £65.80 -50%
Subscribe & Save
One-time purchase

Switch to a subscription and save £1.61
You can have the same for only £31.29. Convenient way to get best prices. You can change or cancel your subscription any time!

Money-back guarantee for 60 days
Free shipping for orders from £50.00
Delivery within 2 working days
visa
mastercard
american_express
paypal

Questions? Call us: 020 8089 0131

Reviews

4.9
Based on 302 reviews
5 ★
279
4 ★
21
3 ★
2
2 ★
0
1 ★
0
Badge 1
Badge 2
Badge 3
Badge 4
Badge 5

Our customers also confirm that it works

4.9 / 5

Eva
starstarstarstarstar5/5

It definitely helps in losing unwanted pounds. I've been using it for a good month and the results are already visible. My well-being has improved so much!

Eva
Cattie
starstarstarstarstar5/5

I noticed the changes very quickly. My mood improved, I changed my eating habits, and my clothes fit me better.

Cattie
Monica
starstarstarstarstar5/5

This bundle helped me a lot, I have more self-confidence and I finally managed to reach my goal. I can finally wear skirts again!

Monica
Prev
Next

Made from scientifically proven active ingredients

Nettle leaf extract

1. Nettle leaf extract

Nettle is one of the most well-known medicinal plants and is excellent in stimulating the excretory functions and removing water from the body. It also supports the excretory functions of the kidneys, venous circulation and contributes to the functionality of the urinary tract.

Elderberry Extract

2. Elderberry Extract

Elderberry supports sweating and contributes to weight loss and weight management. It also supports the immune system and improves blood circulation.

ID-alG™

3. ID-alG™

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

4. L-Carnitine

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

5. L-Tyrosine

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

Knotweed extract

6. Knotweed extract

The hemlock tree (Polygonum aviculare) is a type of plant found all over the world. It helps in the excretion of water and the elimination of bacteria through the urinary tract.

Prev
Next

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.

High quality ingredients

Carefully chosen clean formulation

Eco-Friendly Packaging

Less waste, more care for the planet

Purity & Safety Guaranteed

Third-party tested for verified standards.

60-days-Money-back-Badge-Landing_EN-white-300x300-1.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 and we will refund your money.

-50%
Extreme Slim

Extreme Slim

starstarstarstarhalf star4,9 / 5 check iconReviews (302)

A treatment for fast body definition and elimination of excess weight

  • Clinical studies prove weight and fat loss 3
  • Added power of L-Tyrosine and L-Carnitine for accelerated fat burning 3
  • Assists in weight loss 2
  • Reduces bloating and heavy legs
  • Provides a more beautifully sculpted body

Frequently Asked Questions from Our Users

FAQ Icon

How and why does it work?

OK!FatBurn with the active ingredient ID-alG™ is clinically proven to help lose body fat, OK!WaterOut accelerates the elimination of excess water from the body and helps to eliminate excess pounds.

FAQ Icon

Who is it for?

It is for those who want to eliminate excess oiliness and release excess water.

FAQ Icon

What does it taste like?

OK!FatBurn has a refreshing lemon flavour and OK!WaterOut has a pineapple flavour.

FAQ Icon

What ingredients does it contain?

OK!FatBurn: Vitamin C, ID-alG™, natural lemon flavour, L-carnitine, L-tyrosine, natural beetroot colour, sweetener steviol glycosides. OK!WaterOut: pineapple flavour, nettle leaf extract (Urtica dioica), elderberry extract (Sambucus nigra L.), beetroot concentrate (maltodextrin, beetroot powder (Beta Vulgaris)), hemlock extract (Polygonum aviculare L.), sweetener: steviol glycoside.

FAQ Icon

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 Icon

What if I don't like it?

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

Previous
Next
-50%

Extreme Slim

4.92 / 5
302 Verified reviews
Treatment for quick body definition and elimination of excess weight

Reduces calorie intake that comes from carbohydrates and fats! Equal portions – half as many calories!

  • Clinical studies prove weight loss and fat loss
  • With the power of ID-alG ™ blocks up to 77%* of enzymes for digestion of carbohydrates = reduces calories obtained from food
  • Blocks up to 63%* of fat digestion enzymes
  • Maintains normal absorption of micronutrients such as vitamins and minerals
  • Enriched with L-tyrosine and L-carnitine
  • OK!WaterOut reduces excess water retention
  • Helps with weight loss
  • Reduces bloating and the appearance of heavy legs
  • For a more beautifully shaped body
  • Visible and lasting effect after 8 weeks of use

* Results may vary from person to person.

Net 300 g | for 30 days
How to use +
  • The first 15 days:

In the morning, put 2 scoops (10 g) of OK!WaterOut in a glass of water, mix and drink.

  • For the next 15 days:

Twice a day, before meals, add 5 g (1 scoop) of OK!FatBurn to a glass of water, stir and drink.

Key Ingredients +
  • OK!WaterOut – dietary supplement with sweetener.

Ingredients: Tapioca starch, stabilizer: cellulose, pineapple flavor, nettle leaf extract (Urtica dioica), elderberry extract (Sambucus nigra L.), beet concentrate (maltodextrin, beetroot powder (Beta Vulgaris)), knotweed extract (Polygonum aviculare L.), sweetener: steviol glycoside.

  • OK!FatBurn – dietary supplement with sweetener.

Ingredients: Tapioca starch, erythritol sweetener, vitamin C (ascorbic acid), ID-alG ™, natural lemon aroma, L-carnitine, L-tyrosine, anti-adherent: bamboo fibre, natural beetroot dye, sweetener steviol glycosides.

£32.90 £65.80 -50%
Subscribe & Save
One-time purchase

Switch to a subscription and save £1.61
You can have the same for only £31.29. Convenient way to get best prices. You can change or cancel your subscription any time!

Money-back guarantee for 60 days
Free shipping for orders from £50.00
Delivery within 2 working days
visa
mastercard
american_express
paypal

Questions? Call us: 020 8089 0131

Customer reviews

2268
customer reviews
4.92/5
12 months ago by U H.

The customer only left a rating.

Read more

3 months ago by Trevor Lloyd-Jones

Great

Read more

8 months ago by Maxine Gould

Easy to order and great prices

Read more

3 months ago by iwona swiderska

Dziękuję polecam ❤️

Read more

8 months ago by Christopher Owens

Good products

Read more

12 months ago by Rajesh C.

I have ordered before the products are brilliant and delivery is always good and on time thank you.

Read more

11 months ago by francisco Manuel R.

Good quality product

Read more

8 months ago by christopher jones

Great service

Read more

1 year ago by Stuart S.

The customer only left a rating.

Read more

7 months ago by David Wray

Looking forward to trying purchase and will feed back after a few weeks

Read more

11 months ago by Kerry H.

Easy to purchase and great pay options

Read more

4 months ago by Nicole Edwards

Fabulous looking forward to receiving my parcel and going on my new journey

Read more

8 months ago by June Wood

I love your product

Read more

12 months ago by Rajesh C.

I have ordered before the products are brilliant and delivery is always good and on time thank you.

Read more

12 months ago by Tony S.

Easy process in placing order. Follow up info about the order good

Read more

1 month ago by Ryan Dobson

Good service

Read more

1 month ago by David Grady

Excellent product and excellent service and the products actually work!

Read more

12 months ago by Elaine E.

Always reliable and keep me updated on my order. Good quality products.. Which I have been using for about 18 month's. Very happy with my purchases.

Read more

12 months ago by Marie K.

These products are really good quality & fast delivery thank you

Read more

3 months ago by Geraldine McGoran

Great quality worth the money

Read more

Previous
Next
Badge 1
Badge 2
Badge 3
Badge 4
Badge 5
  • OK!WaterOut – dietary supplement with sweetener.

Ingredients: Tapioca starch, stabilizer: cellulose, pineapple flavor, nettle leaf extract (Urtica dioica), elderberry extract (Sambucus nigra L.), beet concentrate (maltodextrin, beetroot powder (Beta Vulgaris)), knotweed extract (Polygonum aviculare L.), sweetener: steviol glycoside.

  • OK!FatBurn – dietary supplement with sweetener.

Ingredients: Tapioca starch, erythritol sweetener, vitamin C (ascorbic acid), ID-alG ™, natural lemon aroma, L-carnitine, L-tyrosine, anti-adherent: bamboo fibre, natural beetroot dye, sweetener steviol glycosides.

  • The first 15 days:

In the morning, put 2 scoops (10 g) of OK!WaterOut in a glass of water, mix and drink.

  • For the next 15 days:

Twice a day, before meals, add 5 g (1 scoop) of OK!FatBurn to a glass of water, stir and drink.

Warning:

We recommend taking a dietary supplement as part of a varied and balanced diet, and a healthy lifestyle. The recommended daily amount or dose should not be exceeded. A dietary supplement is not a substitute for a balanced and varied diet. 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

Natural

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.

Meet our development experts

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.

Meta Bizjak

M.Sc. Nutrition Engineering

Pia Fistrovič

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.

Free consulting

020 8089 0131

  60-days money back guarantee

Help and orders:

020 8089 0131
[email protected]

Monday – Friday 8 am – 4 pm

Copyright © 2025 Nutrisslim. All rights reserved. Privacy protection cookies.

Save with a subscription

Benefits of a subscription

  • If you subscribe today, additional 5% discount is applied on one time purchase price.
  • Save time - receive your shipment every month without needing to order.
  • You can cancel your subscription at any time in your account panel -> orders -> subscriptions section or just via mail.

Before your package is shipped, you will receive a reminder via email.

shippingicoOnly £50.00 more to FREE DELIVERY.
Items in your cart:
<< Back to products
Proceed to checkout >>