Looking for the best optimized-calorie mass gainers to help you build muscle and gain weight? We’ve rounded up the top 10 options from trusted brands like Optimum Nutrition and Dymatize, offering high-quality protein, complex carbs, and essential nutrients to fuel your transformation journey.
Gaining weight and building muscle can be tough, especially if you’re a hard gainer. That’s where optimized-calorie mass gainers come in. These powerful supplements are packed with high-quality protein, complex carbs, and essential nutrients to help you reach your goals faster.
They’re easy to use, taste great, and deliver serious results. Whether you’re hitting the gym or just need more calories, these gainers have you covered.
With top brands like Optimum Nutrition, Dymatize, and Mutant Mass, you’re in good hands. Ready to transform your body? Let’s dive into the best options and find your perfect match.
List of Top 10 best Optimized-Calorie Mass Gainers
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Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Vanilla, 6 Pound (Packaging May Vary) |
This weight gainer is perfect for anyone who wants to pack on pounds and build muscle. It’s great for active people or those with high calorie needs. |
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Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vitamin C and Zinc for Immune Support, Vanilla, 12 Pound (Packaging May Vary) |
This product is perfect for anyone looking to gain weight and build muscle. It’s ideal for active people who need extra calories, protein, and nutrients to support their goals. |
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Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate, 6 Pound (Packaging May Vary) |
This weight gainer is perfect for anyone who wants to pack on pounds and build muscle. It’s great for active people or those with high calorie needs. |
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Dymatize Super Mass Gainer Protein Powder, Rich Chocolate, 52g Protein, 1g Creatine, 1280 Calories, 10.7g BCAAs, 245g Carbs, Contains Whey Protein Powder, Isolate, and Casein (8 Servings) |
This product is perfect for anyone looking to gain muscle mass and strength. It’s ideal for those who need extra calories and protein to fuel their workouts and recovery. |
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Rule 1 Proteins Mass Gainer – High-Calorie Weight Gain Formula with 1,220+ Calories, 250g+ Complex Carb Blend, 40g All-Whey Protein Per Serving (8 Servings, Strawberries & Crème) |
This mass gainer is perfect for anyone who wants to gain weight and build muscle. It’s ideal for active people who need extra calories and protein to fuel their workouts and grow stronger. |
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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 – Vanilla Ice Cream 2.2 lb |
Mutant Mass Extreme 2500 is perfect for hard gainers who struggle to add size and break through plateaus. It’s also ideal for athletes seeking clean, high-calorie fuel to support muscle growth and recovery. |
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Dymatize Super Mass Gainer Protein Powder, Gourmet Vanilla, 52g Protein, 1g Creatine, 1280 Calories, 10.7g BCAAs, 245g Carbs, Contains Whey Protein, Isolate, and Casein (16 Servings) |
This product is perfect for anyone looking to gain muscle mass and strength. It’s ideal for those who need extra calories and protein to fuel their workouts and recovery. |
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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 anyone looking to build muscle mass and gain weight. It’s ideal for those who need high calories and quality protein to fuel their muscle growth. |
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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 muscle and break through plateaus. It’s also ideal for athletes seeking clean, high-calorie fuel with whole food carbs and premium protein for optimal muscle growth. |
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RIVAL NUTRITION Clean Gainer Cookies & Cream High-Protein Lean Gainer Powder I 5 Lb, 15 Servings I 560 Calories, 30g Protein, 99g Multi-Source Carbs Per Serving I Natural Flavors, No Artificial Colors |
This product is perfect for anyone who wants to gain lean muscle and fuel their workouts. It’s great for active people looking for clean, natural ingredients and quality calories. |
Detailed Reviews
Discover the top 10 optimized-calorie mass gainers carefully selected through expert analysis and real customer feedback. Each product is thoroughly reviewed to highlight its key features, performance, and value. Whether you’re focused on muscle growth, affordability, or clean ingredients, this guide helps you find the perfect fit for your goals. Dive in to uncover the best options and take your fitness journey to the next level!
1. Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Vanilla, 6 Pound (Packaging May Vary)

Optimum Nutrition Serious Mass is a high-calorie weight gainer designed to help you pack on mass. Each 2-scoop serving delivers over 1,200 calories, 50 grams of protein, and 250 grams of carbs.
It’s packed with 22 vitamins and minerals, including Vitamin C and Zinc, to support your immune system. You can also blend it with fruits, nuts, or peanut butter for extra calories and flavor.
| Pros | Cons |
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Perfect For:
This weight gainer is perfect for anyone who wants to pack on pounds and build muscle. It’s great for active people or those with high calorie needs.
Ready to Purchase?
2. Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vitamin C and Zinc for Immune Support, Vanilla, 12 Pound (Packaging May Vary)

Optimum Nutrition Serious Mass is a high-calorie weight gainer designed to help you build muscle and gain weight. It comes in a 12-pound pack with a vanilla flavor.
This powder has 1,250 calories, 50 grams of protein, and over 250 grams of carbs per serving. It also includes 25 vitamins and minerals, plus creatine and glutamine for extra support.
Use an electric blender to mix it with fruits, peanut butter, or nuts. This boosts calorie intake and helps you reach your weight goals faster.
| Pros | Cons |
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Perfect For:
This product is perfect for anyone looking to gain weight and build muscle. It’s ideal for active people who need extra calories, protein, and nutrients to support their goals.
Ready to Purchase?
3. Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate, 6 Pound (Packaging May Vary)

Optimum Nutrition Serious Mass is a powerful weight gainer designed to help you pack on serious size. Each 2-scoop serving delivers over 1,200 calories, 50 grams of protein, and 250 grams of carbs. It’s perfect for those looking to gain muscle mass quickly.
This mass gainer also supports your immune system with Vitamin C and Zinc, plus over 20 essential vitamins and minerals. It’s a complete solution for healthy weight gain and overall wellness. Use it to fuel your fitness goals and stay strong.
For extra versatility, blend it with fruits, nuts, or peanut butter to boost calorie intake. This makes it easy to customize your weight gain plan and achieve maximum results.
| Pros | Cons |
|---|---|
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Perfect For:
This weight gainer is perfect for anyone who wants to pack on pounds and build muscle. It’s great for active people or those with high calorie needs.
Ready to Purchase?
4. Dymatize Super Mass Gainer Protein Powder, Rich Chocolate, 52g Protein, 1g Creatine, 1280 Calories, 10.7g BCAAs, 245g Carbs, Contains Whey Protein Powder, Isolate, and Casein (8 Servings)

Dymatize Super Mass Gainer is a powerful supplement for muscle growth. It packs 52g of protein and 1,280 calories per serving.
This formula supports strength gains with 1g of creatine. It also includes 14 essential vitamins and minerals for overall health.
Blend it into smoothies or baked goods for delicious, calorie-packed treats. Dymatize Super Mass Gainer fuels continuous growth with fast- and slow-digesting proteins.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for anyone looking to gain muscle mass and strength. It’s ideal for those who need extra calories and protein to fuel their workouts and recovery.
Ready to Purchase?
5. Rule 1 Proteins Mass Gainer – High-Calorie Weight Gain Formula with 1,220+ Calories, 250g+ Complex Carb Blend, 40g All-Whey Protein Per Serving (8 Servings, Strawberries & Crème)

Rule 1 Proteins Mass Gainer helps you gain serious weight with 1,220+ calories per serving. It packs 250g+ carbs and 40g all-whey protein for muscle growth. The 6:1 carb-to-protein ratio supports healthy weight gain.
It’s made in the USA with clean ingredients and no banned substances. Mix it with water, milk, or your favorite drink for a delicious shake.
| Pros | Cons |
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Perfect For:
This mass gainer is perfect for anyone who wants to gain weight and build muscle. It’s ideal for active people who need extra calories and protein to fuel their workouts and grow stronger.
Ready to Purchase?
6. Mutant Mass Extreme 2500 – High Calorie Mass Gainer Whey Protein Powder for Muscle Building and Weight Gain – Clean Calories with Whole Food Carbs – Vanilla Ice Cream 2.2 lb

Mutant Mass Extreme 2500 is a high-calorie mass gainer designed for hard gainers who struggle to add size. Each serving packs 1,270 calories to fuel intense muscle building and help you break through plateaus.
It features a premium whey protein blend with 46g of protein per serving, sourced from isolate, concentrate, and hydrolyzed whey. This supports rapid muscle recovery and repair after tough workouts.
Clean calories come from whole food carbs like sweet potato, barley, and oats. Naturally rich in BCAAs and glutamine, it keeps your body primed for consistent growth.
| Pros | Cons |
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Perfect For:
Mutant Mass Extreme 2500 is perfect for hard gainers who struggle to add size and break through plateaus. It’s also ideal for athletes seeking clean, high-calorie fuel to support muscle growth and recovery.
Ready to Purchase?
7. Dymatize Super Mass Gainer Protein Powder, Gourmet Vanilla, 52g Protein, 1g Creatine, 1280 Calories, 10.7g BCAAs, 245g Carbs, Contains Whey Protein, Isolate, and Casein (16 Servings)

Dymatize Super Mass Gainer is a powerful tool for muscle growth. It packs 52g of protein and 1,280 calories per serving, helping you build strength and recover faster.
This formula is calorie-dense, creatine-enhanced, and vitamin-rich. It fuels intense workouts and supports overall health.
Get creative with your gaining journey. Blend it into smoothies, protein bars, or pancakes for delicious, calorie-packed treats.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for anyone looking to gain muscle mass and strength. It’s ideal for those who need extra calories and protein to fuel their workouts and recovery.
Ready to Purchase?
8. 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 packs 1350 nutrient-dense calories in every serving. It’s designed to help you gain hard, dense muscle mass fast. With 50g of protein and 11g of BCAAs, it fuels your muscles for maximum growth.
This weight gainer optimizes insulin response for better results. It tastes like a rich milkshake, making it easy to enjoy. Plus, it’s Informed Choice trusted, so you know it’s safe for sports.
| Pros | Cons |
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Perfect For:
This product is perfect for anyone looking to build muscle mass and gain weight. It’s ideal for those who need high calories and quality protein to fuel their muscle growth.
Ready to Purchase?
9. 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 a high-calorie mass gainer designed for hard gainers. It helps you build muscle and gain weight with extreme calorie density.
This powder uses a premium whey protein blend for fast recovery. It also includes complex carbs from real food sources like sweet potato and oats.
Rich chocolate flavor, easy mixing, and no junk fillers. Perfect for serious athletes who want clean calories.
| Pros | Cons |
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Perfect For:
Mutant Mass Extreme 2500 is perfect for hard gainers who struggle to add muscle and break through plateaus. It’s also ideal for athletes seeking clean, high-calorie fuel with whole food carbs and premium protein for optimal muscle growth.
Ready to Purchase?
10. RIVAL NUTRITION Clean Gainer Cookies & Cream High-Protein Lean Gainer Powder I 5 Lb, 15 Servings I 560 Calories, 30g Protein, 99g Multi-Source Carbs Per Serving I Natural Flavors, No Artificial Colors

Rival Nutrition Clean Gainer is a high-protein, lean gainer powder designed to support muscle growth and recovery. It’s packed with 560 calories and 30g of protein per serving, making it perfect for active individuals.
It’s naturally flavored with no artificial colors or fillers. Sweetened with stevia leaf extract, it’s gluten-free and easy to digest.
With 99g of multi-source carbs and only 3g of added sugars, it fuels your workouts and aids recovery. Made in the USA and third-party tested, it’s safe and reliable for athletes.
| Pros | Cons |
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Perfect For:
This product is perfect for anyone who wants to gain lean muscle and fuel their workouts. It’s great for active people looking for clean, natural ingredients and quality calories.
Ready to Purchase?
Buying Guide
Gaining weight and building muscle can be tough, especially if you’re a hard gainer. Optimized-calorie mass gainers are here to help you reach your goals faster.
Choosing the right mass gainer can feel overwhelming, but we’ve got you covered. Here’s a simple guide to help you find the perfect match for your needs.
- Calorie Content: Look for gainers with 1,000+ calories per serving. This ensures you get enough energy to fuel muscle growth.
- Protein Quality: Opt for high-quality protein like whey, isolate, or casein. Aim for 40-50g per serving to support muscle repair.
- Carb Sources: Choose gainers with complex carbs from whole foods like oats or sweet potatoes. Avoid excessive sugar.
- Added Nutrients: Check for vitamins, minerals, and creatine. These extras boost overall health and recovery.
- Flavor & Mixability: Pick a flavor you’ll enjoy. Ensure it mixes well with water, milk, or smoothies for easy use.
- Brand Reputation: Stick with trusted brands like Optimum Nutrition, Dymatize, or Mutant Mass for quality and safety.
- Serving Size: Consider how many servings you’ll need. Larger packs are cost-effective if you use them regularly.
- Clean Ingredients: Avoid fillers and artificial additives. Look for natural flavors and no banned substances.
With these tips, you’ll find the perfect mass gainer to fuel your fitness journey and achieve serious results.