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MaxiNutrition Progain Extreme 1500g
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MaxiNutrition Progain Extreme 1500g

From £25.00
RRP From £39.99
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Why Progain Extreme?

Take your mass and size goals to the next level by using Progain Extreme. Training to further increase mass and size requires the right nutrition, including an increase in protein intake. Progain Extreme provides 40g of protein in every serving using fast acting and slow release proteins. Every serving of Progain Extreme provides 600 calories, 3g calcium HMB and 40g of high-quality protein for gains in muscle size. It also naturally contains 9.9g of BCAAs and 7.9g of glutamine per serving. If you are making an attempt to achieve your peak size, Progain Extreme contains the extra nutrition that will help get you there effectively.

High in protein

Using the latest in cutting edge protein science, Progain Extreme contains our triple release protein formula that provides an impressive 40g of protein per serving for gains in muscle size. Our formula contains fast acting and slow release proteins to elevate amino acid levels in the blood for longer. Protein is scientifically proven to support gains in muscle size.

600 calories

Progain Extreme contains a massive 600 calories, with 160 calories from 40g of muscle-building proteins in every serving. We have also packed every serving with 76g of complex carbohydrates including oats. When youre training hard for mass and size, add Progain Extreme to your diet - the additional calories and 40g of protein will help to maximise gains in muscle mass and size

Recommended Usage

On the days you train - Twice a day, once after training and once mid-morning or mid-afternoon.

On the days you dont train - Once a day, mid-morning or mid-afternoon.

Nutritional Information
Typical Values
Per 100g
Per serving
Energy, kJ
Per 100g 1673
Per serving 2510
Energy, kcal
Per 100g 400600
Per serving
Essential fatty acids (EFA), g
Per 100g 1.7
Per serving 2.6
Linoleic Acid, g
Per 100g 1.5
Per serving 2.3
Calcium HMB, g
Per 100g 2
Per serving 3
Fat, g
Per 100g 8.4
Per serving 13.0
- of which Saturates, g
Per 100g 4.6
Per serving 7.0
Carbohydrate, g
Per 100g 50.9
Per serving 76
- of which Sugars, g
Per 100g 4.1
Per serving 6.0
Fibre, g
Per 100g 3.0
Per serving 5.0
Protein, g
Per 100g 26.7
Per serving 40
Salt, g
Per 100g 0.8
Per serving 1.1
Glutamine, g
Per 100g 5.3
Per serving 7.9
Amino Acids (per 100g Protein)
Typical Values
Per 100g
Per 100g 6.6
Per serving 9.9
- of which Leucine, g
Per 100g 3
Per serving 4.5
- of which Isoleucine, g
Per 100g 1.7
Per serving 2.5
- of which Valine, g
Per 100g 1.9
Per serving 2.8

Naturally rich in BCAAs and Glutamine

Our protein formula naturally contains 9.9g of Branched Chain Amino Acids (BCAAs) in every serving, which includes 4.5g of the key amino acid, leucine. These amino acids are a crucial part of your diet because your body cant make them itself. Every serving also naturally contains 7.9g of glutamine, the most abundant amino acid in muscle.

3g Calcium HMB

Every serving provides an impressive 3g of calcium HMB, a metabolite of the essential branched chain amino acid leucine. HMB is a well-researched ingredient and recommended by industry-leading experts.

Source of Fibre

Every serving provides a source of fibre, a key component of healthy, balanced diet.

Screened and effective

Every batch of Progain Extreme is screened for banned substances and is registered with the Informed-Sport programme.

You might also like...

Try Progain bars for a high protein, calorie rich snack on the go.

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.

Mohammed Awais My Favorite Product From All Of The Mass And Size Range!
I Have Been Using This Product For 2 Weeks Now, And I Have Been Seeing Positive Results In My Body And Having A Full Bottle In The Maxi Shaker It Really Gives You All The Good Calories You Need To Bulk Up. REALLY RECOMMEND THIS PRODUCT!
Gavin Malone Why so difficult to order?
Hi guys, this product is excellent but it's been out of stock for weeks now - what's going on? Would really appreciate opportunity to purchase. Thanks
The MaxiNutrition Team:


We apologise for any experience caused, but don't fear Progain Extreme is still available to order! 

Somebody from our team will contact you via email

Kind regards,


zoltan katz Creatin
Hi ! Is there any creatine in this product currently? If not can I just mix the powder with creatine and consume together? regards
The MaxiNutrition Team:

Hello Zoltan,

There's currently no creatine in this product, but you can mix it with the creatine monohydrate for all your strength and power needs.

Any more questions please ring 01606 734249, the team here at MaxiMuscle would be happy to help you.

Kind regards,


Kieron Price Scoop size
Hello, I brought this product after seeing great reviews online about it. I've received in in the post today. Tested the test and everything and it's perfect. The only problem I have is that I don't know how many grams the scoop holds so I can't plan out my diet. All the other products I have used says. If you could tell me how many grams half the scoop and a full scoop will hold I'd be very happy. Many thanks, Kieron.
The MaxiNutrition Team:


Thank you for taking the time to leave this great review.

If you need anything at all please don't hesitate to get in touch, the team here at MaxiNutrition would be more than happy to assist you -

 Also please don't forget to have a look at our website for helpful tips about training and nutrition to support you with your goals -

 Thanks again for the review.

 Kind regards,


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