**Protein powder serious mass** is a high-calorie weight gainer supplement designed for fitness enthusiasts in **Singapore** who struggle to build muscle size or maintain a calorie surplus. Featuring premium brands like **Optimum Nutrition Serious Mass** and **Mutant Mass Extreme 2500**, these supplements provide the high-quality proteins and carbohydrates required to support extreme muscle development and quick recovery.
Whether you are a gym-goer lifting at Anytime Fitness in Tampines, completing high-intensity strength sessions in Jurong East, or recovering from strenuous training blocks in Woodlands, achieving a consistent calorie surplus is the ultimate challenge. For many hardgainers—often called "ectomorphs"—eating enough whole food to drive muscle growth is simply not feasible. That is where a high-quality weight gainer comes in, delivering massive calories, clean carbohydrates, and muscle-repairing proteins in a single convenient shake.
At Ultimate Sup, we provide 100% authentic fitness supplements to help Singapore athletes achieve their physical goals. In this comprehensive guide, we review the top-rated "serious mass" formulas, compare their nutritional profiles, and help you select the ideal option to fuel your bulk.
What is Protein Powder Serious Mass?
A "serious mass" protein powder belongs to the category of weight gainers. Unlike traditional whey isolates or concentrates which focus solely on pure protein with minimal fats and carbohydrates, mass gainers are intentionally calorie-dense. They combine fast and slow-digesting proteins with complex carbohydrates (such as maltodextrin or sweet potato powder) and healthy fats.
For athletes in Singapore, using a mass gainer is a highly efficient way to bridge the gap between their daily caloric intake and the surplus required for hypertrophy. Instead of forcing down extra meals during a busy workday in Orchard or Downtown, you can consume a single shake to add over 1,000 clean calories to your diet.
Top Serious Mass & Weight Gainers in Singapore
Here is a detailed breakdown of the four best mass gainers currently stocked at Ultimate Sup, featuring their macros, key benefits, and who they are best suited for.
1. Optimum Nutrition Serious Mass
Optimum Nutrition Serious Mass is the undisputed brand authority in the weight gainer category. Formulated to provide comprehensive nutritional support, each serving delivers a massive 1,250 calories and 50g of blended protein.

What sets Optimum Nutrition Serious Mass apart is its inclusion of 25 essential vitamins and minerals, alongside creatine monohydrate and glutamine. This ensures that you are not just consuming "empty calories" but are actively supporting your body's micronutrient needs and muscle recovery systems.
- Calories per Serving: 1,250 kcal
- Protein per Serving: 50g
- Carbs per Serving: 252g
- Key Highlight: 25 vitamins & minerals, plus 3g creatine.
- Link: Shop ON Serious Mass
2. Mutant Mass Extreme 2500
For those looking for an absolute calorie bomb, Mutant Mass Extreme 2500 is engineered specifically for extreme hardgainers who find it virtually impossible to put on weight.

Mutant Mass is packed with 1,070 calories and 52g of high-quality dairy protein (including whey protein concentrate, isolate, and hydrolysate) per serving when mixed with water. If mixed with double-decker whole milk as directed for the "Extreme 2500" protocol, it climbs to a whopping 2,540 calories. It features a gourmet flavor profile that makes consuming these massive servings a treat.
- Calories per Serving: 1,070 kcal (up to 2,540 kcal with milk)
- Protein per Serving: 56g (up to 92g with milk)
- Carbs per Serving: 230g
- Key Highlight: Designed for extreme ectomorphs; incredible milkshake taste.
- Link: Shop Mutant Mass Extreme 2500
3. MusclePharm Combat XL Mass Gainer
MusclePharm Combat XL is a premium weight gainer focused on athletic performance and clean ingredient sourcing. It features a dense multi-stage protein blend to supply nutrients to your muscles over several hours.

Combat XL delivers 1,270 calories and 60g of protein from four active sources (whey concentrate, milk protein concentrate, micellar casein, and whey isolate). This time-release protein blend is perfect for preventing muscle breakdown during long work hours or overnight recovery.
- Calories per Serving: 1,270 kcal
- Protein per Serving: 60g
- Carbs per Serving: 252g
- Key Highlight: 4-source time-release protein blend; low sugar.
- Link: Shop MusclePharm Combat XL
4. Dymatize Super Mass Gainer
Dymatize Super Mass Gainer is a highly popular option formulated with high-quality ingredients, including a significant dose of branched-chain amino acids (BCAAs) to kickstart muscle protein synthesis.

Each serving of Dymatize Super Mass provides 1,280 calories, 52g of protein, and 10.7g of BCAAs (including 5.1g of L-Leucine). It is easily digestible and mixes smoothly without excessive clumping, making it a highly pleasant daily shake.
- Calories per Serving: 1,280 kcal
- Protein per Serving: 52g
- Carbs per Serving: 242g
- Key Highlight: High BCAA content (10.7g) for direct anabolic signaling.
- Link: Shop Dymatize Super Mass Gainer
Side-by-Side Comparison of Mass Gainers
To help you make an informed decision, here is a detailed comparison of our top weight gainers available in Singapore:
| Product Name | Calories | Protein | Carbs | Key Feature | Price Range (SGD) |
|---|---|---|---|---|---|
| ON Serious Mass | 1,250 kcal | 50g | 252g | Added Creatine & Vitamins | $85.00 - $115.00 SGD |
| Mutant Mass | 1,070 kcal | 56g | 230g | Gourmet Taste, High Density | $89.00 - $119.00 SGD |
| MusclePharm Combat XL | 1,270 kcal | 60g | 252g | Time-Release Proteins | $85.00 - $110.00 SGD |
| Dymatize Super Mass | 1,280 kcal | 52g | 242g | 10.7g BCAAs for Anabolism | $95.00 - $125.00 SGD |
Note: Prices in Singapore may vary depending on local shipping promotions and import batches at Ultimate Sup.
How to Maximize Mass Gainer Results
Taking a weight gainer is straightforward, but optimizing your routine can help prevent unwanted fat gain and ensure clean muscle growth:
- Start with Half Servings: Because these formulas are highly concentrated, starting with a full serving can overwhelm your digestive tract. Consume half a serving daily for the first week to assess tolerance.
- Post-Workout and Between Meals: The ideal times to take your shake are immediately post-workout to replenish glycogen stores and initiate muscle repair, or between major meals to maintain a constant caloric surplus.
- Link Your Supplements: For optimal muscle building, ensure you are linking your mass gainer with a solid recovery stack. Check out our creatine collection or browse our complete mass gainer collection to plan your routine. You can also view our full protein powder collection for lighter post-workout options.
- Consistency is Key: Building mass takes time. Ensure you maintain your caloric surplus daily while executing a progressive overload lifting routine at your local Singapore gym.
Frequently Asked Questions
Is Serious Mass better than standard whey protein?
Neither is inherently better; they serve different purposes. Standard whey protein (like whey isolates) is ideal for those seeking lean muscle maintenance or fat loss, as it provides protein with minimal calories. A serious mass gainer is designed for bulk phases, supplying both protein and massive carbohydrates to drive a caloric surplus.
Can I drink a mass gainer before bed?
Yes, you can drink a mass gainer before bed, especially if it contains slow-digesting proteins like micellar casein (found in MusclePharm Combat XL). This provides a sustained release of amino acids to prevent muscle breakdown during sleep. However, reduce the serving size if it causes bloating or interferes with your sleep quality.
Where can I buy authentic weight gainers in Singapore?
You can buy 100% authentic, high-quality mass gainers directly from Ultimate Sup. We import our supplements directly from authorized global distributors, storing them in our temperature-controlled local warehouse. We offer fast island-wide shipping to Woodlands, Jurong, Tampines, Orchard, and beyond.
About the Author
Marcus Thorne is a certified strength and conditioning coach and sports nutrition writer based in Singapore. With over a decade of experience training athletes and fitness enthusiasts, Marcus specializes in hypertrophy protocols, mass-building nutrition, and athletic performance optimization. You can read more of his training and supplement guides on his Author Page.