Description
xOptimum Nutrition Serious Mass is a powerful mass gainer formulated for those who struggle to consume enough calories to support muscle growth. With over 1,250 calories per serving when mixed with water, it provides a convenient and effective way to significantly increase your daily caloric intake.
Each serving delivers 50 grams of high-quality protein alongside a substantial carbohydrate blend to fuel workouts and support recovery. This combination helps replenish glycogen stores while promoting muscle repair and growth, making it ideal for athletes and hard gainers alike.
Serious Mass also includes a comprehensive mix of vitamins and minerals to support overall health and performance. Whether you're bulking, increasing strength, or looking to add size quickly, this formula delivers dependable results—available now at SupplementSource.ca for the best price in Canada.
Key Benefits
- Supports rapid weight and muscle gain
- High-calorie formula for hard gainers
- Promotes recovery and muscle repair
- Provides energy for intense workouts
Ideal For
- Hard gainers struggling to gain weight
- Athletes in bulking phases
- Individuals needing high-calorie supplementation
- Anyone looking to increase muscle size and strength
Frequently Asked Questions
Q: How many calories are in one serving?
A: Each serving provides approximately 1,250–1,260 calories depending on flavour.
Q: How much protein does it contain?
A: It contains 50 grams of protein per serving to support muscle growth and recovery.
Q: When should I take Serious Mass?
A: It can be taken post-workout, between meals, or anytime you need extra calories.
Q: Can beginners use this product?
A: Yes, but due to its high calorie content, beginners may want to start with half servings.
Q: Can I mix it with milk?
A: Yes, mixing with milk increases calories and enhances taste and texture.
Summary / TL;DR
Optimum Nutrition Serious Mass is a high-calorie mass gainer with 50g protein and 1,250+ calories per serving—perfect for building size, strength, and weight at the best price in Canada.
Actual nutrition information may vary between product types and/or flavours.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to anywhere in Canada & United States of America . Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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