What's new with Serious Mass?

Not only does Serious Mass have a fresh new look, but it also has added 3 grams of creatine to support your performance.

The label looks different compared to the previous one I got, is it still the same OPTIMUM NUTRITION product?

As you evolve, so do we. The part of our mission is to help active individuals better understand OPTIMUM NUTRITION products. Now choosing the right product for you is easier with more visible product benefits, features and flavours on each tub.

The tub is not full to the brim when opened, why is that?

This is completely normal and is to do with the way the powder is vacuum packed into the tub. The powder settles over time. This does not impact the weight or number of servings listed on the label.

What is the best way to prepare Serious Mass drink?

To get the optimal consistency and prepare your drink in easy and convenient way, we recommend using a blender.

Are the ingredients tested and safe?

All of the ingredients in our products have been approved and considered safe for consumption by the European Food Safety Authority.

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💥 Bulk up smarter, not harder with Serious Mass!

PERFORMANCE BOOST - Enhanced with 3g creatine monohydrate to elevate your strength and endurance during intense workouts.
CALORIE POWERHOUSE - Fuel your gains with over 1,250 calories per serving—perfect for serious mass builders.
NUTRIENT RICH FORMULA - Includes 25 essential vitamins and minerals to keep your body balanced and energized.
MUSCLE GROWTH CATALYST - Packed with 50g of high-quality protein to support lean muscle development and recovery.
MIXES INSTANTLY DELICIOUSLY - Strawberry-flavored, instantized powder blends smoothly for a convenient, tasty shake anytime.

Optimum Nutrition Serious Mass is a high-calorie weight gainer designed for athletes and hardgainers seeking rapid muscle growth and recovery. Each serving delivers over 1,250 calories, 50 grams of protein, 250 grams of carbs, and 3 grams of creatine monohydrate, alongside 25 essential vitamins and minerals. Its instantized strawberry-flavored powder mixes easily, making it an ideal post-workout or between-meal supplement to fuel serious size gains.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

E£ 18230

Duties & taxes incl.

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30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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Allergen Information	Contains: Eggs, Gluten, Milk, Peanuts, Soy
Weight	5.82 kg
Units	5450.0 gram
Serving Recommendation	334 Grams
Manufacturer contact	4 Waterside, Dublin 24, Ireland
Country of origin	ca
Brand	Optimum Nutrition
Format	Powder
Age Range Description	Adult
Country of origin	United Kingdom
Serving Size	100 g
Energy (kJ)	1573.00 kJ
Energy (kcal)	375.95 kcal
Fat	1.8000 g
Carbohydrate	75.0000 g
Protein	15.0000 g
Salt	0.5600 g

Optimum Nutrition Serious Mass Protein Powder with Creatine, Glutamine, 25 Vitamins and Minerals, Strawberry Flavour, 16 Servings, 5.45KG

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