15% off your first order when you sign up to our newsletter
Shop the NEW Optimum Nutrition Merchandise range
Free delivery for orders over £45
Do you want to gain weight to improve your sports performance? It can be difficult to achieve this with only food and diet. This is certainly true for people with a high metabolism. As well as people with a busy lifestyle and those who do not feel hungry a lot. That’s where Serious Mass can definitely help you. It helps you take in more calories and successfully gain weight with its ultimate weight gain formula. Every serving contains more calories (1,250g) to increase how much you take in each day. It is high in protein (50g) which is good for your muscle growth and repair. The level of carbohydrates (250g) also help you with muscle recovery after training. As an extra bonus, it now includes Creatine (3g) that naturally helps your muscles to produce more energy during exercise. More energy helps you with endurance sports, such as cycling, swimming and running. The extra muscle it helps to build will also help people serious about weight gain to achieve their goals.
Ready to mix powder that already contains protein, carbohydrates, vitamins, minerals, and sweetener.
Ideal for people who want to gain weight
Increase your daily calorie intake to achieve your goal
High level of proteins (50g) to repair and grow muscle
Carbohydrates(250g) to help recover muscles after training
Gives you more energy for endurance sports with Creatine (3g)
For best results, we recommend that you take your shake between meals when you need extra calories. You can also have it after your workout, which will support your recovery.
Mix 2 heaped scoops with 710 ml of water.
Nutritional information will be shown when a flavour and/or size is selected.
Plus 15% off your first order