Maxi Nutrition Lean Definition Review

Maxi Nutrition Lean Definition Review

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Maxi Nutrition Lean Definition Review

In a world full of elusively-named products, Maxi Nutrition is one of the pack leaders (right next to USN). This Maxi Nutrition Lean Definition review will be looking at how this product works and whether or not we recommend it for weight loss.

Let’s take a look at the top level pros and cons of this product:

Maxi Nutrition Lean Definition Benefits:

  • High in protein per serving
  • Caffeine content will boost energy
Maxi Nutrition Lean Definition Drawbacks:

  • Doesn’t contain any scientifically proven weight loss ingredients
  • Product carries some potentially negative side effects
  • Very expensive product
  • No money-back guarantee

Maxi Nutrition Lean Definition Review

Some Quick Information On This Product

Lean Definition is a low calorie diet protein shake produced by Maxi Nutrition (formerly Maxi Muscle). The shake is high in protein and features several ingredients that will help boost energy and overall increase your workout performance.

Is Maxi Nutrition Lean Definition A Good Product To Help Me Lose Weight?

If you were expecting this product to cut the fat straight off your body within one tub worth of powder while you sit on the couch watching Love Island, you’ll be disappointed (if that’s what you’re looking for you’ll need to check out our top rated diet shake).

We would to class this shake as a “weight loss support shake”, rather than a cutting edge weight loss shake; By this we mean that the product alone isn’t really going to burn body fat or suppress appetite, however the ingredients inside can be helpful to somebody who leads an active lifestyle. This product does not contain any scientifically proven ingredients for weight loss – however the ingredients that it does contain will boost energy, heighten mental focus and will most likely allow you to work harder in the gym; This may result in weight loss.

What Are The Maxi Nutrition Lean Definition Ingredients?

We have found the following ingredient information via the Musclefood website:

A Blend of Whey Proteins (from Milk) including Whey Protein Isolate & Hydrolysed Whey Protein Isolate & Hydrolysed Whey Protein, Emulsifiers: Soya & Sunflower Lecithins) Sweeteners (Xylitol, Sucralose) Cocoa Powder (5%) Safflower Oil Powder, Fructooligosaccharides, Flavouring, Thickener (Cellulose Gum) Guarana Seed Extract, Caffeine, Green Tea Extract, Pantothenic Acid

For allergens – see ingredients in bold.

What Are The Maxi Nutrition Lean Definition Side Effects?

We have found the following potential side effect information:

Increased bowel movements, nausea, thirst, bloating, cramps, reduced appetite, tiredness (fatigue), and headache. [1]

Nervousness, sleep problems, vomiting, diarrhea, irritability, irregular heartbeat, tremor, heartburn, dizziness, ringing in the ears, convulsions, and confusion. [2]

These side effects are possible but may not be typical.

What does Maxi Nutrition Lean Definition claim to do?

Maxi Nutrition do not paint this product is to be a miracle shake, in fact they do not promise any weight loss results. The only official statement on this product is that it is a ‘low calorie shake with a high protein content’.

Are There Any Reviews From Customers?

We have found the following Maxi Nutrition Lean Definition review testimonials:

This is a reformulated product and is awful. Even when mixed as instructed it tastes powdery and leaves a nasty after taste. I have used two scoops from the tub and can’t stomach any more. A waste of money!

I bought this item because I like my protein shakes but when I used it once it turned yellow and brown and tasted funny and it had a weird smell once I opened it up the product was still in date but I ended up throwing it out!

Where Can I Buy This Product?

You can buy this product from the maxi nutrition website. It is also available in most supplements stores.

Our Conclusion.

To summarise our final thoughts on this Maxi Nutrition Lean Definition review, we do not recommend this product for readers who are interested in losing weight quickly. The formula is completely lacking in any scientifically proven ingredients – Yes the formula will boost your energy levels and is high in protein, however this product is not going to burn your fat.

This shake would be great for supporting your workouts in the gym, but we would not recommend it as your dedicated weight loss shake supplement. If you’re looking for a great weight loss shake, we recommend you check out our top rated product Burner Shake.

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Lucy Blevins
Staff Writer at
Lucy is a fully qualified nutritionist and is a full time staff writer here at She has analysed and reviewed over 1000 different products in the supplement industry and loves helping readers find the perfect weight loss product!

Disclaimer: All of our product reviews are based on research and evidence available within the public domain. The presented information above includes our personal opinion. It is important to note that research presented, manufacturer claims and product formulations can potentially change, making some statements outdated and/or incorrect. Please contact us if you feel anything written is inaccurate.


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