Maximuscle Promax Lean

Maximuscle Promax Lean

Maximuscle Promax Lean










  • Good Mixability
  • Good Flavour


  • Poor Formula
  • Awful Performance
  • Very Expensive

I get it, cutting weight is difficult. With that in mind, supplements like Promax Lean can seem really attractive. All the protein of a normal supplement without the empty calories.

Late last year, I ran a two-week experiment with Promax Lean, continuing my normal program on Promax Lean to see if I could maintain my lifts and cut a little weight while I was at it.


Active Ingredients

BioMax True Protein, L-Carnitine, Green Tea Extract, Caffeine.



Promax Lean is available in one standard size (765g) and two flavours (chocolate and strawberry) so there’s not a lot of variety. I picked up the chocolate version because, let’s face it, who wants fruit and veggies in a protein shake?

Taste wise, Promax Lean is good but not special, which is a little disappointing considering how tasty Maximuscle’s Cyclone is.

Onto the formula.

For protein, you’re looking at 25g per 37g serving, which is pretty solid. Unfortunately, Maxinutrition use a propriety blend called BioMax True Protein, which contains both whey protein and casein. Since it’s proprietary, we don’t know how much of each is included.

I was left feeling pretty full for a few hours after drinking Promax Lean, which suggests there’s quite a bit of the slower burning casein in there.

In terms of mixability, Promax lean was good. I used both water and milk and found it lump free after not much mixing.

There’s also some extra additions alongside the protein.

Take the 80mg of caffeine, which is the equivalent of one and a half espressos. I’m not sure what caffeine really adds to a post-workout protein shake but I’ll give Maxinutrition the benefit of the doubt. Maybe it’s to elicit a refreshing feeling when you’re actually running on fumes?

The addition of L Carnitine is good in theory, but the dosage is so low that it’s hard to know if it actually has any effect.

I know I’m bashing Promax Lean but I really cant see why this is a better supplement for a cut. Maximusle Whey Protein Isolate, for example, has a higher protein content, lower calorie content and it’s significantly cheaper.



Promax Lean isn’t cheap. The full-price tub will set you back £39.99 for just 765g. That works out at £52.27 per kilo, which pushes it into the premium bracket.



If I’m honest, I was disappointed at the end of my two-week experiment. On reflection, the ingredients feel weird and the general premise misjudged.

At the end of the two weeks, I noticed that my DOMS seemed to linger for slightly longer, which left me feeling more drained in the gym. I’ve no idea if I lost any weight but I definitely felt less confident under the bar.

For cuts and clean bulks, I just can’t recommend Promax Lean. Instead, pick up something basic like their Whey Protein Isolate.