Serious Mass: 1,250 calories and 50 g of protein per serving
Optimum Nutrition Serious Mass is a high-calorie weight gainer for people who find it hard to eat enough to gain weight. One serving, two heaping scoops blended with water, gives 1,250 calories, 50 g of protein from whey protein concentrate, and 252 g of carbohydrates, with added creatine, glutamine and 25 vitamins and minerals. It suits hard gainers, skinny beginners and athletes in a bulking phase who need an easy way to reach a calorie surplus.
What’s in one serving (2 scoops, about 334 g)
| Per serving, mixed with water | Amount |
|---|---|
| Calories | 1,250 |
| Protein | 50 g |
| Carbohydrates | 252 g |
| Fat | 4.5 g |
| Added creatine monohydrate | 5 g (current label; older bags list less) |
| Glutamine | 8 g |
| Vitamins and minerals | 25 |
Main ingredients: maltodextrin and whey protein concentrate, with flavourings, sweeteners and a vitamin and mineral blend. Contains milk. Older bags also list calcium caseinate and egg white, so check the allergen statement on your bag if you avoid egg or soy.
Who Serious Mass suits
- Hard gainers: one shake adds as many calories as a large meal.
- Bulking phases: pair it with heavy training and regular meals.
- Not trying to gain weight? A lean whey from our whey protein range gives protein without the extra calories.
- Comparing gainers: see every option in mass gainers.
How to use
Blend two heaping scoops (about 334 g) with 710 ml of cold water, milk or another drink for 30–45 seconds. If you are new to gainers, take one scoop a day in the first week, then build up to one full serving or more. Drink it between meals, after training or before bed. Follow the directions on the bag.
Sizes and flavours
Serious Mass comes in 6 lb (8 servings) and 12 lb (5.5 kg, 16 servings) bags, in Chocolate, Vanilla and Strawberry; the selector shows today’s stock. The 12 lb bag costs less per serving. More from Optimum Nutrition.
How to check your bag
- The bag is sealed and the zip lock is intact.
- Importer details are on a sticker or printed on the label; the batch number and expiry date are printed on the bag.
- The expiry date matches the one shown on this page.
Why order Serious Mass from iFIT
- We buy from Optimum Nutrition or its authorised distributor; importer, batch and expiry details are on every bag.
- You receive a tax invoice with your order.
- Pay by card, valU or cash on delivery, with delivery to every governorate.
Serious Mass questions
How many calories are in Serious Mass?
One full serving, two heaping scoops (about 334 g) mixed with water, gives 1,250 calories, 50 g of protein and 252 g of carbohydrates, with 4.5 g of fat. Mixing it with milk adds more calories and protein.
How do I take Serious Mass if I am new to gainers?
Start with one scoop a day for the first week, which is half a serving, so your stomach gets used to the volume. Then move to one full serving a day. Blend it with 710 ml of cold water or milk for 30–45 seconds.
When is the best time to drink Serious Mass?
Between meals is the easiest way to add calories without spoiling your appetite. Many people also have it straight after training. Splitting one serving into two shakes during the day works well if a full serving feels too heavy.
Is Serious Mass the same as whey protein?
No. Serious Mass is a weight gainer: most of its calories come from carbohydrates (maltodextrin), with 50 g of protein per serving. Whey protein is mostly protein with few calories. Choose Serious Mass if you struggle to gain weight; choose whey if you only need more protein.
How long does a 12 lb bag of Serious Mass last?
The 12 lb (5.5 kg) bag holds 16 full servings, so about two weeks at one serving a day, or a month at a half serving a day. Food supplements don’t replace a varied diet. If you’re pregnant, breastfeeding, under 18, taking medication or have a medical condition, ask your doctor first.
Samuel (verified owner) –
Very fast delivery.