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Gold Standard 100% Whey (908g) + Whipped Protein Bar (box) now only for £39.99!  31% savings!

Serious Mass

  • Supports muscle building and weight gaining
  • More than 1260 kcal per serving to help boost your calorie intake
  • 50 g protein per serving to help build and maintain muscle
  • More than 250 g carbohydrates per serving to help support muscle Recovery
From £32.99

Product Overview


Serious weight gain requires serious calories. However, those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, a highly active metabolism, weaker appetite and on-the-run lifestyle can make it a real challenge to consume enough calories through whole foods alone. SERIOUS MASS™ is the ultimate in weight gain formulas. With 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates helping support muscle recovery , and now with 3 g added Creatine to support performance per serving, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS™



Ready to mix powder with protein, carbohydrates, vitamins and minerals, with sweetener.


  • Over 1250 calories per serving

  • 50 g of whey protein
  • 250 g carbs helps support muscle recovery 
  • 25 vitamins and minerals
  • 3 g of creatine to support performance 
  • Ideal formula to support weight gains
  • Enjoy post work-out and between meals
  • Available in a range of sizes and great tasting flavours

Suggested Use

For best results, consume your shake between meals when you need extra calories or after your workout to support your recovery.

Mix 2 heaped scoops with 710 ml of water.

Nutritional Information

Nutritional information will be shown when a flavour and/or size is selected.

Customer Reviews

Overall Rating (4.6)
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Review by Jeremy McAdams on Sep 10, 2021
Real incredible stuff honestly. If youre serious about gaining wait quickly this is all you need. Ifnyou have never taken this kinda stuff before i recommend following the guidelines on the package to just take half a serving for a week or two.

Great shake. I love it

Review by Jerome Thompson on Aug 12, 2021
Great shake you will notice your weight gain very quickly

Works as advertised

Review by Colin M on Aug 12, 2021
A friend recommended this product to me after I professed that I wanted to get back to exercising, but didn't have the appetite or patience to add that many calories to my diet. It's been the perfect product for me. I usually drink 1 shake and eat 2 meals a day. The taste of the vanilla option is an unusual type of sweet, since it's heavy on carbs but not sugar/high fructose corn syrup. I've found that adding unsweetened cocoa powder makes it quite enjoyable.

Great product with decent taste

Review by Vishal Shinde on Jul 30, 2021
It tastes decent. Overall a good product, helps me cover the extra calories I need to gain weight.

Works a treat

Review by Ethan on Jul 25, 2021
I had the banana flavour, taste great, i mix it with water, requires a good amount of shaking to mix properly (ON recommend using a blender), i put on 4KG with this shake over about 5 weeks and i wasnt even religious with taking it. On the 4 days i weight trained a week i had one scoop (half the recommended) and on my cardio day where i played football i had 2 scoops. I had a week off from my shake half way through. Im going to try the gold standard version next as i want to have more control over my creatine intake as i have always personally got sides from creatine like face bloating.


Review by James Griffiths on Jul 24, 2021
Managed to put on almost 2 stone since i started drinking this, would recommend if u are trying to gain mass fast

Great product

Review by Tim on Jul 15, 2021
Great tasting and seeing the results already


Review by Anonymous on Jul 5, 2021
The artificial sweetener taste is a bit too overwhelming. Otherwise it keeps me full for a long time.

Great for sticking points

Review by Patrick Capps on Jun 27, 2021
It's great for getting those last few pounds on in a hard mass phase.

good stuff

Review by Rick on Jun 23, 2021
too much sugar, otherwise OK. In future I'll stick to gold standard whey though.

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