Skip to main content
Buy 3 For 2
Maximuscle Promax Lean Protein Powder
Default ImageMaximuscle Promax Lean Protein PowderAlternative Image1

Maximuscle Promax Lean Protein Powder

From £30.00
RRP From £39.99
Select an option
Multi buy offer: 3 for 2
This spend will earn you 90 MaxiReward Points


Maximuscle Promax Lean contains 25 g of BioMax True Protein; our unique blend provides high-quality protein to support your lean muscle goals. Promax Lean is a high protein, low fat and low sugar shake to complement your daily diet.

The benefits of Maximuscle Promax Lean

For individuals looking for muscle development - protein is the key. Maximuscle Promax Lean offer a convenient way to boost the protein content of your diet; supporting your goal when temptation threatens to hamper your progress.

What makes Maximuscle Promax Lean different?

Maximuscle Promax Lean has been nutritionally tailored to meet your training needs. Maximuscle Promax Lean is newly formulated with 25 g of BioMax True Protein, a blend of whey protein and milk protein (casein) providing both fast and slow acting protein. Promax Lean can be used following exercise or in between meals to provide additional dietary protein.

Typically, food protein concentrations are theoretically calculated based on the total nitrogen content, but this can cause some variances in the derived protein level. Maximuscle have gone one step further by validating the protein concentration in Promax Lean by comparing the weight of the individual amino acids with the calculated factored amount, qualifying this as BioMax True Protein. We guarantee that every serving of Promax Lean provides 25g of high-quality BioMax True Protein to help support the growth and maintenance of lean muscle.

For Maximuscle Athletes and Ambassadors, Progain is the preferred choice - they can go into competition with peace of mind, knowing that all of Maximuscle products are screened for banned substances and accredited by the Informed-Sport programme.

Maximuscle only use proven, reliable ingredients with known scientific benefits in our products.

Stacking support

Promax Lean is the ideal product range to support your muscle maintenance and development by being high in protein. As an alternative, why not try one of our newly formulated Promax Lean bars; great to keep in your gym bag for when the need arises.


Typical Values
Per 100g
Per serving
Vitamin B6, mg
Per 100g 0.7/50%
Per serving 0.3/21%
Thiamin, mg
Per 100g 0.6/55%
Per serving 0.2/18%
Vitamin B12, μg
Per 100g 1.3/52%
Per serving 0.5/20%
Pantothenic acid, mg
Per 100g 3.1/52%
Per serving 1.1/18%
Riboflavin, mg
Per 100g 0.7/60%
Per serving 0.3/21%
Niacin, mg
Per 100g 8.2/51%
Per serving 3.0/19%
Green Tea Extract, mg
Per 100g 410.0
Per serving 151.7
Caffeine, mg
Per 100g 216.0
Per serving 80.0
Fat, g
Per 100g 5.4
Per serving 2.0
- of which saturates, g
Per 100g 3.7
Per serving 1.4
Carbohydrate, g
Per 100g 9.9
Per serving 3.7
- of which sugars, g
Per 100g 4.3
Per serving 1.6
Fibre, g
Per 100g 6.1
Per serving 2.3
Protein, g
Per 100g 68.0
Per serving 25.0
Salt, g
Per 100g 1.8
Per serving 0.6
L-Carnitine, g
Per 100g 1.1
Per serving 0.4
Energy, kJ / kcal
Per 100g 1548/370
Per serving 573/137

Green Tea & L-Carnitine

Each serving is packed with green tea, which is derived from the plant, camellia sinensis. Each serving also contains 400mg L-carnitine, a naturally occurring amino acid which plays a key role in the transport of fatty acids to the mitochondria of the cell.

Low in Fat & Sugar

PROMAX LEAN is ideal for individuals who are looking for a great tasting product that is high in protein but also low in fat and low in sugar.


Every serving of PROMAX LEAN is formulated with 80mg caffeine to increase your focus by making you feel more alert and enhancing concentration.

Screened & Effective

Promax Lean is ideal for individuals who are looking for a great tasting source of high-quality protein thats also low in sugar.

Serving Instructions

On the days you train: 1 serving after training + 1 serving either mid afternoon/morning.

On the days you dont train: 1 serving mid morning or 1 serving mid afternoon.

1 serving = 1 scoop

Suitable for vegetarians.

England, Wales, Scotland, Northern Ireland

Standard Delivery
Is FREE on orders over £40 and will be delivered in 1-4 working days. Deliveries under £40 will be charged at £3.95

Next (Working) Day Delivery
Costs £5.95. If you order by 2pm Mon-Fri, we will send your parcel by DPD for next working day delivery. A signature is required. Some parts of the U.K (e.g. Shetland Islands, Channel Islands) do not offer next (working) day delivery, so please allow 3-4 working days instead.

Saturday Delivery Options
Costs £12.00. If you order by 2pm Monday-Friday, we can send your parcel by DPD for exclusive Saturday delivery. Please note a signature is required. Some parts of the U.K (e.g. Shetland Islands, Channel Islands) do not offer Saturday day delivery, so please allow 3-4 working days instead.

Predict - Our One Hour Delivery Window
If you provide your mobile number at the checkout our courier DPD will provide you with a one hour delivery window so you don't have to wait in all day for their parcels.

Channel Islands

There is a shipping fee of £8.50 when shipping to Channel Islands.


There is a shipping fee of £10.50 when shipping to Ireland.

Head to our delivery information page for more information.

Money Back Guarantee

We are so confident of our products’ effectiveness that we guarantee it. Just use the products as instructed on the label for 30 days, all the while maintaining a sensible training regime and a healthy diet. If you are not satisfied with the results, please send the goods back to us in the original packaging to us within 40 days, including your training and meal plans where we will review and determine if you qualify for a refund.

Please note: Short life products cannot be refunded/exchanged

Returns Process

Step 1
Fill in the reverse paper of your order invoice that accompanied your order. 

Step 2
Clearly label and pack your returned products to our address

Step 3
Send the package using your choice of courier. 

More information can be found by on our returns policy.

Scott Johnson Another Changed Product - Also Not as Good!
Sadly this is another Product which has changed for the worse. I've used Promax Lean for a number of years and always had great results with it. The formula has changed twice recently, and on both occasions the one being replaced was better than the one that replaced it. I just can't get on with the taste of this one so have had to buy as many of the previous recipe as I can while stocks lasted before I switch to another brand. I assume your products are consumer tested before they are changed because it really feels like they're not. This is the 8th Maxi Product which I used to use that I can not longer stomach. Shame!
The MaxiNutrition Team:

Hi Scott,

We are sorry to hear that the taste of our new formula isn't to your liking.

Please understand that our new, improved recipe is more beneficial to your training goals and has been designed to help achieve better results. You can read about this here -

We do have plenty of flavours to chose from and we are sure that you will find one you like.

Thanks for taking the time to leave a review.

Kind regards,


David Gale New Forumla is too sweet!
Well, the new Promax Lean formula arrived and, rather than sounding off straight away, I've waited a couple of weeks whilst comparing it back to back with the previous formula. Guys, the new formula is way too sweet for my taste, with almost double the amount of sugar (1.8g vs 1g). I note the significant increase in green tea extract (over 500%) but I won't be ordering any more of this until the formula is resolved in a way that makes it reasonably pleasant to drink. Please feel free to add me to your product testing team!

< 1 2 >

Submit your review

You need to login to submit a review. Please click here to log in or register.