10 Best weight gainers in Canada

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Last Updated - 2026/06/20

Best Choice

01
Optimum Nutrition

Gold Standard Pro Gainer | High Protein Weight Gainer Powder | 650 Calories, 60g Protein, 82g Carbohydrates | Mass Gainer & Source Vitamins & Minerals | 14 Servings, 5.09LB (Double Chocolate)
Main highlights

Perfect for Daily Caloric Support: With a well-balanced blend of protein, carbohydrates, and essential nutrients, Gold Standard Pro Gainer Mass Gainer Powder is ideal for incorporating into your daily routine to help meet your nutritional goals.
Packed with Essential Vitamins & Minerals: Gold Standard Pro Gainer includes over 20 essential vitamins and minerals, such as iron, calcium, potassium, and vitamins C & E, ensuring well-rounded nutritional support in every serving.
High-Protein Formula with Balanced Nutrition: Gold Standard Pro Gainer features 60 grams of protein per serving along with 650 calories and 81+ grams of carbohydrates, making this an excellent option for supporting your daily caloric intake.
Easy Mixing for On-the-Go Convenience: Whether you use a blender, shaker, or spoon, Gold Standard Pro Gainer Mass Gainer powder mixes effortlessly with water, milk, or your favourite beverage for a smooth and convenient shake.
Delicious Flavour Options: Gold Standard Pro Gainer is available in Double Chocolate and Vanilla Custard, these rich flavours make every serving a treat you'll look forward to enjoying.
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9.9

Exceptional

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02
MAMMOTH

MAMMOTH MASS: Weight Gainer, High Calorie Protein Powder Workout Smoothie Shake, Meal Replacement, Low Sugar, Whey Isolate Concentrate, Casein Protein Blend, Weight Training, High Protein 15 lb, Chocolate
Main highlights

REVOLUTIONARY MASS GAINER FORMULA: Mammoth Mass contains 60 grams of High Quality Protein compromised of whey protein concentrate, whey protein isolate & miscellar casein. There is over 39 grams of combined BCAA Glutamine and Essential Amino Acids Clean Carb Complex features.
QUALITY NUTRITION: Putting on size requires a balance of heavy training and quality nutrition. Because everyone’s a little different, some have a harder time packing on muscle than others. Mammoth Mass is a high-protein powdered mix delivering significant amount of supplemental protein, carbs, vitamins and minerals to build on the amount you're getting from a balanced diet of food.
PROTEIN SHAKES AND RECIPES: Mammoth mass weight gainer protein is versatile in making protein shakes, smoothies and recipes. Boost calories and nutrition by adding to protein bars, cookies and other recipes.
MUSCLE MASS FORMULA: MAMMOTH MASS Weight Gainer provides more protein, better carbs and far less sugar giving you more of what you want in a potent mass muscle building formula. With 60 grams of the finest whey protein isolate, whey protein concentrate, micellar casein and calcium caseinate available.
CALORIES: To gain just one extra pound, you need to consume approximately 3,500 calories-above and beyond what you normally consume through foods, beverages, and supplements. Pro Gainer provides over 1250 calories per serving. By adding just one serving to your daily routine, you can begin to experience an increase in lean mass within the first week.
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9.7

Exceptional

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03
Mutant

MUTANT MASS Weight Gainer Protein Powder with a Whey Isolate, Concentrate, and Casein Protein Blend, High-Calorie Shake, 2.27 kg – Triple Chocolate

8.4 worth the money

8.2 Taste
Main highlights

Made with natural whole foods (barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed and sunflower oil)
Essential fatty acids (EFAs) and natural oils from coconut, avocado, flaxseed, pumpkin seed and sunflower
Engineered in our own state-of-the-art manufacturing facility to maintain gold-standard quality
56 g of pure protein, 192 g of clean carbs, 12 g of fat
26.1 g of EAAs and 12.2 g of BCAAs (naturally present)
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9.6

Exceptional

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04
Mutant

Mutant Mass Extreme Gainer Whey Protein Powder, Build Muscle Size & Strength with High-Density Clean Calories, (Triple Chocolate, 6 LBS)

8.4 worth the money

8.2 Taste
Main highlights

MADE WITH NATURAL WHOLE FOODS | Barley, sweet potato, rolled oats, avocado, coconut oil, pumpkin seeds.
EXTREMELY HIGH CALORIE WEIGHT GAIN | 1,270 calories per serving (4 scoops) mixed two cups of 1% milk. Two daily servings deliver 2,540 calories.
EACH SERVING DELIVERS | 46 grams of 100% pure whey protein, 255 grams of carbohydrates, 7.5 grams of fat per serving (4 scoops) mixed with two cups of 1% milk. Naturally high in BCAAs, EAAs, Glutamine and other amino acids needed to support muscle growth from hard training.
CRASH WEIGHT GAIN | Made for extreme hard gainers looking to add serious MASS!
100% GOURMET TASTE
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9.4

Excellent

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Value for Money

05
Optimum Nutrition

Optimum Nutrition Serious Mass Powder | High Calorie Protein & Carbohydrate Powder | 50g Protein, 1250 Calories, 250g Carbohydrates | 6LB (Vanilla)
Main highlights

Versatile Shake Mix for Smoothies and Recipes: Use as a shake mix, blend into smoothies, or add to recipes like oats to customize thickness, taste, and daily calorie intake. A flexible protein and carb powder option that fits a wide range of routines and preferences.
Protein and Carbohydrate Drink Mix: Made with a protein and carbohydrate blend to support consistent daily nutrition and higher calorie routines. A great choice for active lifestyles, hard gainers, and anyone looking for a calorie dense shake mix that fits into everyday meal planning.
High Calorie Shake Mix for Daily Nutrition: Serious Mass is a high calorie powder drink mix designed to help you add more calories to your day in a simple, convenient way. Mix it into a shake between meals, after training, or anytime you want an easy option for higher calorie intake.
Easy to Mix Powder, Smooth Shake Texture: This high calorie shake mix blends easily with water or milk for a smooth, satisfying texture, no complicated prep required. Great for busy schedules, quick mixing, and consistent use at home, work, or on the go.
1250 Calories, 50g Protein, 250g Carbs per Serving: Each serving provides 1250 calories with 50g protein and 250g carbohydrates per serving, making it an efficient way to add calories, protein, and carbs in one shake. Ideal for building larger shakes when you want more nutrition in a single serving.
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9.3

Excellent

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06
Mutant

Mutant Mass Extreme Gainer Whey Protein Powder Build Muscle Size and Strength High Density Clean Calories 6 lbs Vanilla Ice Cream

8.4 worth the money

8.2 Taste
Main highlights

MADE WITH NATURAL WHOLE FOODS | Barley, sweet potato, rolled oats, avocado, coconut oil, pumpkin seeds.
EXTREMELY HIGH CALORIE WEIGHT GAIN | 1,270 calories per serving (4 scoops) mixed two cups of 1% milk. Two daily servings deliver 2,540 calories.
EACH SERVING DELIVERS | 46 grams of 100% pure whey protein, 255 grams of carbohydrates, 7.5 grams of fat per serving (4 scoops) mixed with two cups of 1% milk. Naturally high in BCAAs, EAAs, Glutamine and other amino acids needed to support muscle growth from hard training.
CRASH WEIGHT GAIN | Made for extreme hard gainers looking to add serious MASS!
100% GOURMET TASTE NPN 80094546
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9.2

Excellent

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07
Sunshine Biopharma

Sunshine Biopharma’s Extreme Mass Gainer, 12 Servings (375g), 1582 Cal & 60g Protein, Bulk High-Calorie Serving for Muscle Builder & Weight Gainer

9.3 Taste

9.3 worth the money
Main highlights

SWEETENERS: Extreme Mass Gainer is sweetened with Stevia, a natural sweetener very commonly used. To equilibrate the taste, it contains a minute amount of Sucralose (10 mg). All these products are approved by Health Canada and the FDA, and the major scientific studies proved them as safe and armless to human
HYPERTROPHY ARCHITECTURE: The 10lb foundation is engineered for the athlete committed to a total physiological transformation. Achieving massive scale requires a consistent, multi-week caloric surplus that resets your body’s weight set-point
GLYCOGEN RESYNTHESIS MATRIX: Loaded with complex carbohydrates to rapidly replenish depleted muscle fuel tanks. By ensuring your glycogen levels are fully saturated, you prevent the body from entering a catabolic, muscle-wasting state
60G PROTEIN: Build and repair muscle with a heavy-duty 60g dose of protein per shake. This high-potency amino acid profile ensures that your 1,500+ calorie intake is utilized for maximum muscle protein synthesis and recovery, rather than just empty caloric storage
1582 CALORIES PER SERVING: Stop struggling to hit your caloric surplus. Each massive 375g serving delivers 1,582 nutrient-dense calories, engineered to force your body into a growth state. This is the literal solution for hard gainers and athletes with high-intensity caloric demands who cannot meet their needs through whole food alone
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9.1

Excellent

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08
ALLMAX

ALLMAX Nutrition - QUICKMASS - Weight Gainer & Rapid Gain Catalyst, Chocolate, 10 Pound, 10 Lb

20% Off
Main highlights

RESEARCH-PROVEN RESULTS: Clinically studied to significantly boost fat-free mass and chest size within 8 weeks, ideal for serious athletes and fitness enthusiasts looking to maximize muscle gains.
RAPID MASS BUILDING FORMULA: Delivers 1010 calories and 64 grams of sustained-release protein per serving, scientifically engineered to help quickly increase lean muscle mass.
PREMIUM CLEAN-CARB BLEND: Features a specialized blend of slow-release carbohydrates including sweet potato, oats, quinoa, and soluble corn fiber, ensuring consistent energy without sugar crashes.
FORTIFIED WITH VITAMINS & MINERALS: Contains 20 essential vitamins and minerals, providing comprehensive nutritional support for enhanced muscle growth and recovery.
EASY-TO-MIX & DELICIOUS: QuickMass is perfectly formulated to mix effortlessly with water, delivering a creamy, delicious shake without the need for milk.
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8.9

Very Good

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09
NAKED

Chocolate Naked Mass - All Natural Chocolate Weight Gainer Protein Powder - 8lb Bulk, NSF Certified, GMO Free, Gluten Free & Soy Free. No Artificial Ingredients - 1,360 Calories - 11 Servings
Main highlights

PROTEIN SHAKES AND RECIPES: Our natural chocolate weight gain protein powder is versatile in making protein shakes, smoothies and recipes. Boost calories and nutrition by adding Naked Mass to chocolate weight gainer shakes, pancakes, cookies and other recipes.
PREMIUM COMPLEX CARBOHYDRATES: Unlike other weight gainers that use wheat-based maltodextrins, our chocolate mass gainer uses gluten free organic tapioca maltodextrin for clean source complex carbohydrates.
ONLY FIVE INGREDIENTS: Naked Whey, Naked Casein, Organic Maltodextrin (made from gluten free organic tapioca), Organic Coconut Sugar, and Organic Raw Cacao. Chocolate Naked Mass contains no artificial sweeteners, flavors, or colors and is GMO Free, No rBGH or rBST, Soy Free and Gluten Free.
MULTI-PHASE CLEAN PROTEIN: All natural whey and casein provides your body with healthy amino acids to keep protein synthesis up throughout the day.
MAXIMUM NUTRITION: 50g of Protein, 251g of Carbs, 1,360 Calories, 11.6g of BCAAs (branched-chain amino acids) per serving. As an NSF Certified protein powder, Naked Mass is verified for purity and safety.
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8.8

Very Good

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10
ALLMAX

ALLMAX Nutrition - QUICKMASS - Weight Gainer & Rapid Gain Catalyst, Chocolate Peanut Butter, 10 Pound, 10 Lb

20% Off
Main highlights

RESEARCH-PROVEN RESULTS: Clinically studied to significantly boost fat-free mass and chest size within 8 weeks, ideal for serious athletes and fitness enthusiasts looking to maximize muscle gains.
RAPID MASS BUILDING FORMULA: Delivers 1010 calories and 64 grams of sustained-release protein per serving, scientifically engineered to help quickly increase lean muscle mass.
PREMIUM CLEAN-CARB BLEND: Features a specialized blend of slow-release carbohydrates including sweet potato, oats, quinoa, and soluble corn fiber, ensuring consistent energy without sugar crashes.
FORTIFIED WITH VITAMINS & MINERALS: Contains 20 essential vitamins and minerals, providing comprehensive nutritional support for enhanced muscle growth and recovery.
EASY-TO-MIX & DELICIOUS: QuickMass is perfectly formulated to mix effortlessly with water, delivering a creamy, delicious shake without the need for milk.
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8.6

Very Good

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