Looking for the best muscle-building mass gainers? We offer top-rated, third-party tested formulas packed with protein, carbs, and flavor to fuel your gains and crush your fitness goals!
Building lean muscle takes fuel, protein, and dedication. The right mass gainer makes all the difference.
MHP UYM XXXL 1350 packs 50g protein and 1,350 calories for fast gains. Mutant Mass Extreme 2500 delivers 1,270 calories per serving. Forzagen Lean Gainer blends oats and sweet potatoes for lasting energy.
BSN TRUE-MASS uses a 4:1 carb-to-protein ratio for recovery. GNC Bulk 1340 adds creatine and BCAAs for strength. MuscleMeds Carnivor offers beef protein for sensitive stomachs.
Each product is third-party tested, athlete-safe, and flavor-packed. Your journey to bigger gains starts here. Results? Just one sip away.
List of Top 10 Muscle-Building Mass Gainers
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MHP UYM XXXL 1350 Mass Building Weight Gainer, Muscle Mass Gains, w/50g Protein, High Calorie, 11g BCAAs, Leucine, Milk Chocolate, 8 Servings |
This product is perfect for hard gainers or athletes aiming to build strong, dense muscle mass. It delivers 50g protein and 1350 calories per serving to fuel muscle growth, boost strength, and support recovery. |
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Mutant Mass Extreme 2500 – High Calorie Mass Gainer Whey Protein Powder with Whole Food Carbs – Muscle Building & Weight Gain Supplement for Extreme Hard Gainers – Triple Chocolate 6 lbs |
Mutant Mass Extreme 2500 is perfect for hard gainers needing extreme calorie density to build muscle. It blends 3-source whey protein, whole food carbs, and BCAAs for growth, all in a rich cookies and cream taste. |
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Forzagen Lean Gainer Premium Mass Builder | Mass Gainer Protein Powder for Men & Women | High Calorie Protein, Weight Gain, Bulk, Muscle Building Supplement | Dutch Chocolate, 8 lbs. (11 Servings) |
This Forzagen Lean Gainer is perfect for athletes and anyone aiming to gain serious size and strength. It’s ideal for men and women who want to build muscle mass and achieve measurable gains. |
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Mutant Mass Extreme 2500 – High Calorie Mass Gainer Whey Protein Powder for Muscle Building and Weight Gain – Clean Calories with Whole Food Carbs – Triple Chocolate 2.2 lb |
Mutant Mass Extreme 2500 is perfect for hard gainers who struggle to add size and muscle. It’s also great for athletes needing clean, high-calorie fuel to power intense workouts and recover faster. |
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Animal M-Stak – Muscle Builder and Anabolic Mass Gainer Supplement for Bodybuilding – Lean Muscle Growth, Amino Complex and Pre Workout Energy, 21 Packs |
Animal M-Stak is perfect for hard gainers and serious athletes who struggle to build muscle. It boosts lean muscle growth, directs nutrients to muscle, and creates an anabolic environment for stronger gains. |
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Forzagen Lean Gainer Premium Mass Builder | Mass Gainer Protein Powder for Men & Women | High Calorie Protein, Weight Gain, Bulk, Muscle Building Supplement | Vanilla, 8 lbs. (11 Servings) |
This mass gainer protein powder is perfect for athletes and active people who want to gain muscle and strength. It’s great for men and women looking for a high-calorie, nutrient-rich supplement to support their fitness goals. |
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BSN TRUE-MASS Weight Gainer, Mass Gainer Protein Powder, Post Workout Muscle Recovery Powder, Muscle Gainer, 4:1 Carbs to Protein Ratio, Strawberry Milkshake, 10.25 Pound, 15 Servings |
BSN TRUE-MASS is perfect for serious athletes or hard gainers needing extra calories and protein to build muscle and recover after tough workouts. Its high-carb, high-protein blend with BCAAs gives energy and supports growth for those pushing their limits. |
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Forzagen Lean Gainer Premium Mass Builder | Mass Gainer Protein Powder for Men & Women | High Calorie Protein, Weight Gain, Bulk, Muscle Building Supplement | Dutch Chocolate, 12 lbs. (16+ Servings) |
Forzagen Lean Gainer is perfect for athletes and active people wanting to build muscle, gain weight, and boost strength. Its high-calorie, 50g protein formula with natural carbs and premium ingredients fuels serious gains and performance. |
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MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer, Strawberry, 6 Pound |
MuscleMeds Carnivor Mass is perfect for anyone looking to build muscle and strength without the digestive issues often associated with dairy-based gainers. If you’re seeking a powerful, beef-based protein that’s easy on your stomach and supports faster recovery, this strawberry-flavored gainer is your ideal choice! |
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GNC Pro Performance Bulk 1340 Mass Gainer Protein Powder, 50g, Gluten Free, Whey, Creatine, BCAA, 3rd Party Tested, Muscle Recovery & Growth, Micronutrients, Cookies and Cream, 9 Servings |
This mass gainer is perfect for anyone who wants to build muscle and gain size. It’s great for athletes or active people looking to fuel workouts and recover faster. |
Detailed Reviews
Discover the top muscle-building mass gainers tested for results. Each pick blends high calories, 50g+ protein, and BCAAs to fuel lean muscle gains and sustained energy. Trusted by athletes and hard gainers, these formulas mix premium ingredients with great taste—like milk chocolate and cookies and cream—to make gains simple. Explore our guide to find your perfect match for bulking and strength goals.
1. MHP UYM XXXL 1350 Mass Building Weight Gainer, Muscle Mass Gains, w/50g Protein, High Calorie, 11g BCAAs, Leucine, Milk Chocolate, 8 Servings
MHP UYM XXXL 1350 is a powerful weight gainer designed for muscle mass gains. It packs 1350 nutrient-dense calories to fuel your growth.
It has 50g of protein, 11g of BCAAs, and leucine for fast and sustained muscle support. The milk chocolate flavor tastes like a rich milkshake.
This product optimizes insulin response for maximum muscle growth. It’s Informed Choice trusted, making it safe for athletes.
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Perfect For:
This product is perfect for hard gainers or athletes aiming to build strong, dense muscle mass. It delivers 50g protein and 1350 calories per serving to fuel muscle growth, boost strength, and support recovery.
Ready to Purchase?
2. Mutant Mass Extreme 2500 – High Calorie Mass Gainer Whey Protein Powder with Whole Food Carbs – Muscle Building & Weight Gain Supplement for Extreme Hard Gainers – Triple Chocolate 6 lbs
Mutant Mass Extreme 2500 is a powerful high-calorie mass gainer designed for those who find it hard to gain weight. Each serving packs an incredible 1,270 calories, perfect for fueling muscle growth.
It contains a blend of whey protein and complex carbs from real food sources. Enjoy the delicious cookies and cream flavor. This product helps you reach your daily nutrition goals easily.
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Perfect For:
Mutant Mass Extreme 2500 is perfect for hard gainers needing extreme calorie density to build muscle. It blends 3-source whey protein, whole food carbs, and BCAAs for growth, all in a rich cookies and cream taste.
Ready to Purchase?
3. Forzagen Lean Gainer Premium Mass Builder | Mass Gainer Protein Powder for Men & Women | High Calorie Protein, Weight Gain, Bulk, Muscle Building Supplement | Dutch Chocolate, 8 lbs. (11 Servings)
Forzagen Lean Gainer is a high-calorie protein powder with 1260 calories per serving. It has 50g of protein and 250g of natural carbs from oats, yams, and sweet potatoes. This mix helps fuel muscle growth and energy for serious fitness goals.
Made with premium ingredients, it supports a balanced diet and optimal performance. Use it as a post-workout shake or daily supplement to boost energy and muscle gains. Choose from rich Dutch Chocolate or creamy Vanilla for a tasty routine.
This gainer is built for muscle building and weight gain without compromise. It’s easy to mix and great-tasting, making results simple and enjoyable.
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Perfect For:
This Forzagen Lean Gainer is perfect for athletes and anyone aiming to gain serious size and strength. It’s ideal for men and women who want to build muscle mass and achieve measurable gains.
Ready to Purchase?
4. Mutant Mass Extreme 2500 – High Calorie Mass Gainer Whey Protein Powder for Muscle Building and Weight Gain – Clean Calories with Whole Food Carbs – Triple Chocolate 2.2 lb
Struggling to pack on serious muscle? Mutant Mass Extreme 2500 is your secret weapon for extreme calorie density, designed for those who need a massive nutrient surplus to conquer stubborn plateaus and fuel intense muscle building. This isn’t just any protein; it’s your ticket to finally seeing the gains you’ve been working for.
Get ready for rapid muscle recovery with a premium 3-source whey protein blend, including isolate, concentrate, and hydrolyzed whey. Power your workouts with complex carbs from real food sources like sweet potato and oats, providing sustained energy without the junk. Plus, it’s naturally loaded with BCAAs and glutamine to protect your lean muscle and keep you in the optimal state for growth.
Enjoy the gourmet Triple Chocolate taste. It mixes effortlessly. Fuel your high-performance goals.
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Perfect For:
Mutant Mass Extreme 2500 is perfect for hard gainers who struggle to add size and muscle. It’s also great for athletes needing clean, high-calorie fuel to power intense workouts and recover faster.
Ready to Purchase?
5. Animal M-Stak – Muscle Builder and Anabolic Mass Gainer Supplement for Bodybuilding – Lean Muscle Growth, Amino Complex and Pre Workout Energy, 21 Packs
Unlock your ultimate fitness potential with Animal M-Stak! This powerful supplement is designed to help your body maximize muscle growth and gain mass effectively.
It helps turn food into muscle. It makes your muscles feel fuller. It gives you more energy.
Experience lean muscle growth and improved strength in just 21 days. Animal M-Stak is your key to reaching peak performance.
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Perfect For:
Animal M-Stak is perfect for hard gainers and serious athletes who struggle to build muscle. It boosts lean muscle growth, directs nutrients to muscle, and creates an anabolic environment for stronger gains.
Ready to Purchase?
6. Forzagen Lean Gainer Premium Mass Builder | Mass Gainer Protein Powder for Men & Women | High Calorie Protein, Weight Gain, Bulk, Muscle Building Supplement | Vanilla, 8 lbs. (11 Servings)
Forzagen Lean Gainer is a high-calorie protein powder designed for anyone wanting to gain weight and build muscle. Each serving provides an incredible 1260 calories, with 50g of protein and 250g of carbohydrates from natural foods like oats and sweet potatoes.
This product supports your muscle-building goals effectively. It mixes easily for post-workout shakes. Enjoy it in delicious flavors like Creamy Vanilla and Dutch Chocolate.
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Perfect For:
This mass gainer protein powder is perfect for athletes and active people who want to gain muscle and strength. It’s great for men and women looking for a high-calorie, nutrient-rich supplement to support their fitness goals.
Ready to Purchase?
7. BSN TRUE-MASS Weight Gainer, Mass Gainer Protein Powder, Post Workout Muscle Recovery Powder, Muscle Gainer, 4:1 Carbs to Protein Ratio, Strawberry Milkshake, 10.25 Pound, 15 Servings
BSN TRUE-MASS is a high-calorie weight gainer made for those aiming to build muscle. It mixes 50g of protein with 215g of carbs per serving, using rolled oats for steady energy.
Each scoop packs over 1,200 calories to fuel gains, plus BCAAs for muscle repair. The 4:1 carb-to-protein ratio supports recovery and growth after workouts.
This strawberry milkshake powder mixes easily into drinks. It’s rich in essential amino acids and designed for serious lifters. Store it cool to avoid melting—avoid heat or sunlight.
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Perfect For:
BSN TRUE-MASS is perfect for serious athletes or hard gainers needing extra calories and protein to build muscle and recover after tough workouts. Its high-carb, high-protein blend with BCAAs gives energy and supports growth for those pushing their limits.
Ready to Purchase?
8. Forzagen Lean Gainer Premium Mass Builder | Mass Gainer Protein Powder for Men & Women | High Calorie Protein, Weight Gain, Bulk, Muscle Building Supplement | Dutch Chocolate, 12 lbs. (16+ Servings)
Forzagen Lean Gainer is a high-calorie protein powder with 1260 calories per serving. It delivers 50g of protein and 250g of natural carbs from oats, yams, and sweet potatoes. This blend supports lean muscle mass growth and sustained energy for workouts.
Choose Dutch Chocolate or Creamy Vanilla for a tasty shake. Mix 4 scoops daily to boost energy levels and muscle recovery.
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Perfect For:
Forzagen Lean Gainer is perfect for athletes and active people wanting to build muscle, gain weight, and boost strength. Its high-calorie, 50g protein formula with natural carbs and premium ingredients fuels serious gains and performance.
Ready to Purchase?
9. MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer, Strawberry, 6 Pound
MuscleMeds Carnivor Mass is a powerful protein gainer. It comes in a 6-pound pack with strawberry flavor. The compact size makes it easy to store.
This product uses 100% beef protein isolate. It helps build muscle mass and boosts strength. It also supports recovery after workouts.
It’s gentle on the stomach. The formula is free from lactose, sugar, dairy, and gluten. Perfect for those with dietary restrictions.
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Perfect For:
MuscleMeds Carnivor Mass is perfect for anyone looking to build muscle and strength without the digestive issues often associated with dairy-based gainers. If you’re seeking a powerful, beef-based protein that’s easy on your stomach and supports faster recovery, this strawberry-flavored gainer is your ideal choice!
Ready to Purchase?
10. GNC Pro Performance Bulk 1340 Mass Gainer Protein Powder, 50g, Gluten Free, Whey, Creatine, BCAA, 3rd Party Tested, Muscle Recovery & Growth, Micronutrients, Cookies and Cream, 9 Servings
GNC Pro Performance Bulk 1340 helps you gain muscle mass. It has 50g protein, creatine, and carbs per serving.
Creatine boosts energy for workouts. The whey protein aids muscle recovery. Glutamine supports the immune system.
Each serving gives 1,340 calories. The carb blend fuels tough gym sessions. It’s third-party tested for safety.
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Perfect For:
This mass gainer is perfect for anyone who wants to build muscle and gain size. It’s great for athletes or active people looking to fuel workouts and recover faster.
Ready to Purchase?
Buying Guide
Building muscle takes hard work and the right fuel. A good mass gainer can help you reach your goals faster.
Engaging Experience:
Imagine having more energy for workouts and seeing real gains. The right mass gainer makes this possible. It’s like having a secret weapon for your fitness journey.
Factors to Consider When Buying:
- Calories: Look for 1,000+ calories per serving to fuel muscle growth.
- Protein: Choose 50g or more of protein to support muscle repair and growth.
- Carbs: Complex carbs from oats or sweet potatoes give lasting energy.
- BCAAs: Branched-Chain Amino Acids help with recovery and muscle building.
- Flavor: Pick a taste you’ll enjoy, like chocolate or vanilla.
- Mixability: Ensure it blends easily with water or milk for smooth shakes.
- Quality: Go for third-party tested products to ensure safety and purity.
- Dietary Needs: Check for lactose-free or gluten-free options if needed.