Get 20% off all protein powders with Unidays

 

Get 20% off all protein powders with Unidays

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Mass Gainers

29 items
Mass Gainers
Category
Brand
Price, £
Popularity
Serious Mass Strawberry 2.72kgSerious Mass Strawberry 2.72kgSerious Mass Strawberry 2.72kg
18+
Great Savings
Optimum Nutrition
Serious Mass Strawberry 2.72kg
(129)
£32.00
£40.00
£1.18/100 g
Serious Mass Vanilla 2.7kgSerious Mass Vanilla 2.7kgSerious Mass Vanilla 2.7kg
18+
Great Savings
Optimum Nutrition
Serious Mass Vanilla 2.7kg
(146)
£32.00
£40.00
£1.19/100 g
Serious Mass Banana 2.72kgSerious Mass Banana 2.72kgSerious Mass Banana 2.72kg
18+
Great Savings
Optimum Nutrition
Serious Mass Banana 2.72kg
(97)
£32.00
£40.00
£1.18/100 g
Serious Mass Chocolate 2.7kgSerious Mass Chocolate 2.7kgSerious Mass Chocolate 2.7kg
18+
Great Savings
Optimum Nutrition
Serious Mass Chocolate 2.7kg
(230)
£32.00
£40.00
£1.19/100 g
Serious Mass Chocolate Peanut Butter 2.73kgSerious Mass Chocolate Peanut Butter 2.73kgSerious Mass Chocolate Peanut Butter 2.73kg
18+
Great Savings
Optimum Nutrition
Serious Mass Chocolate Peanut Butter 2.73kg
(54)
£32.00
£40.00
£1.17/100 g
Serious Mass Cookies & Cream 2.7kgSerious Mass Cookies & Cream 2.7kgSerious Mass Cookies & Cream 2.7kg
18+
Great Savings
Optimum Nutrition
Serious Mass Cookies & Cream 2.7kg
(49)
£32.00
£40.00
£1.19/100 g
Muscle Fuel Anabolic Variety Pack Chocolate, Strawberry, Vanilla & Cookies 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Variety Pack Chocolate, Strawberry, Vanilla & Cookies 4kg
£65.00
£70.00
£1.63/100 g
Muscle Fuel Anabolic Banana 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Banana 4kg
(9)
£58.00
£70.00
£1.45/100 g
Critical Mass Gainer Vanilla 2.4kg
18+
Great Savings
Applied Nutrition
Critical Mass Gainer Vanilla 2.4kg
(10)
£36.00
£40.00
£12.00/100 g
New In
Muscle Fuel Anabolic Cookies & Cream 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Cookies & Cream 4kg
(15)
£58.00
£70.00
£1.45/100 g
Muscle Fuel Anabolic Variety Pack Chocolate, Strawberry, Banana, Caramel 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Variety Pack Chocolate, Strawberry, Banana, Caramel 4kg
(1)
£65.00
£70.00
£1.63/100 g
Muscle Fuel Anabolic Strawberry 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Strawberry 4kg
(41)
£58.00
£70.00
£1.45/100 g
Critical Mass Gainer Strawberry 2.4kg
18+
Great Savings
Applied Nutrition
Critical Mass Gainer Strawberry 2.4kg
(13)
£36.00
£40.00
£12.00/100 g
New In
Muscle Fuel Anabolic Chocolate 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Chocolate 4kg
(22)
£58.00
£70.00
£1.45/100 g
Critical Mass Gainer Chocolate 2.40kg
18+
Great Savings
Applied Nutrition
Critical Mass Gainer Chocolate 2.40kg
(13)
£36.00
£40.00
£1.50/100 g
New In
Muscle Fuel Anabolic Vanilla 4Kg
18+
Great Savings
USN
Muscle Fuel Anabolic Vanilla 4Kg
(13)
£58.00
£70.00
£1.45/100 g
Muscle Fuel Anabolic Caramel Peanut 4kg
18+
Great Savings
USN
Muscle Fuel Anabolic Caramel Peanut 4kg
(6)
£58.00
£70.00
£1.45/100 g
Serious Mass Chocolate 5.4kgSerious Mass Chocolate 5.4kgSerious Mass Chocolate 5.4kgSerious Mass Chocolate 5.4kg
18+
Optimum Nutrition
Serious Mass Chocolate 5.4kg
(230)
£65.00
£1.20/100 g
Muscle Fuel Anabolic Cookies & Cream 2kg
18+
USN
Muscle Fuel Anabolic Cookies & Cream 2kg
(15)
£40.00
£2.00/100 g
Serious Mass Powder Banana 5.4kgSerious Mass Powder Banana 5.4kgSerious Mass Powder Banana 5.4kgSerious Mass Powder Banana 5.4kg
18+
Optimum Nutrition
Serious Mass Powder Banana 5.4kg
(97)
£65.00
£1.20/100 g
Muscle Fuel Anabolic Strawberry 2kg
18+
USN
Muscle Fuel Anabolic Strawberry 2kg
(41)
£40.00
£2.00/100 g
Serious Mass Vanilla 5.4kgSerious Mass Vanilla 5.4kgSerious Mass Vanilla 5.4kgSerious Mass Vanilla 5.4kg
18+
Optimum Nutrition
Serious Mass Vanilla 5.4kg
(146)
£65.00
£1.20/100 g
Muscle Fuel Anabolic Vanilla 2kg
18+
USN
Muscle Fuel Anabolic Vanilla 2kg
(13)
£40.00
£2.00/100 g
Muscle Fuel Anabolic Banana 2kg
18+
USN
Muscle Fuel Anabolic Banana 2kg
(9)
£40.00
£2.00/100 g
Muscle Fuel Anabolic Caramel Peanut 2kg
18+
USN
Muscle Fuel Anabolic Caramel Peanut 2kg
(6)
£40.00
£2.00/100 g
Muscle Fuel Anabolic Chocolate 2kg
18+
USN
Muscle Fuel Anabolic Chocolate 2kg
(22)
£40.00
£2.00/100 g
Serious Mass Strawberry 5.4kgSerious Mass Strawberry 5.4kgSerious Mass Strawberry 5.4kgSerious Mass Strawberry 5.4kg
18+
Optimum Nutrition
Serious Mass Strawberry 5.4kg
(129)
£65.00
£1203.70/100 g
Serious Mass Cookies & Cream 5.4kgSerious Mass Cookies & Cream 5.4kgSerious Mass Cookies & Cream 5.4kgSerious Mass Cookies & Cream 5.4kg
18+
Optimum Nutrition
Serious Mass Cookies & Cream 5.4kg
(49)
£65.00
£1.20/100 g
Serious Mass Chocolate Peanut Butter 5.45kgSerious Mass Chocolate Peanut Butter 5.45kgSerious Mass Chocolate Peanut Butter 5.45kgSerious Mass Chocolate Peanut Butter 5.45kg
18+
Optimum Nutrition
Serious Mass Chocolate Peanut Butter 5.45kg
(54)
£65.00
£1.19/100 g

Whether you're underweight and looking to gain healthy mass or a fitness enthusiast aiming to build muscle, we've got the perfect solution to support your journey.

Mass gainers are dietary, weight gain supplements that help you build lean muscle mass, and gain weight safely. While similar to other protein powders, mass gainers are different in that they typically contain a high number of calories, carbohydrates, proteins, and sometimes fats.

These powerful protein supplements are packed with concentrated protein from various sources like whey or casein, to allow you to gain lean mass. Usually, mass gainers are consumed in the form of a shake, mixed with water or milk.

At Holland & Barrett, we want to support you on your healthy weight and muscle gain journey. That’s why we supply a wide variety of mass gainer protein powders from top brands like USN, Optimum Nutrition and PE Nutrition. With a range of mouth-watering flavours like strawberry, vanilla, and chocolate, we have a weight gainer for every palate.

Most mass gainers use whey protein, a form of dairy protein. However, if you’re vegan, or dairy-free, there is plenty of choice too. Packed full of plant-based protein, each vegan weight gainer tub is designed to increase your physical performance.

We know it can be difficult to gain weight safely, which is why we offer a variety of serious mass gainers too. These specialised protein powders contain many calories to help boost your daily calorie intake and a high level of protein to support your muscles.

It is important to incorporate weight gain supplements into your routine gradually alongside a balanced diet and regular exercise. You should also check with your GP to make sure mass gainers are safe for you to use on your journey.

A convenient way to add more calories and protein to your diet, mass gainers can help you get more from your workouts, enhance your recovery, and help you gain weight safely and more healthily.

With our carefully selected weight gain supplements and protein powders, you'll be well on your way to a stronger, healthier, and more confident you.

FAQs
Can you take mass gainers and creatine together?
Our in-house registered nutritionist, Holly Roper, says: “Yes, you can take mass gainers and creatine together - in fact, some mass gainer powders contain creatine already. If you plan to combine the two separately, double-check the ingredients to ensure you don’t take too much creatine than needed.”
What are the benefits of taking a mass gainer?
Wondering whether you should use a mass gainer? Our in-house registered nutritionist, Holly Roper, says: “The main advantage of using mass gainers is their ability to provide you with more calories, without the need for excessive food consumption. Additionally, each mass gainer is formulated with a precise balance of proteins, carbs, and fats, so you know you’re getting enough of all these nutrients in an efficient way.”
Can you take a mass gainer whilst cutting?
“Cutting” is a period where you eat in a calorie deficit to lose body fat and maintain muscle mass. It usually follows a “bulking” period, where you intentionally consume more calories for a set period to give your body the fuel it needs to boost muscle size and strength. As the cutting phase means reducing the number of calories you consume, you should avoid mass gainers. Instead, why not try a different type of protein powder?
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