10 Best weight gainer for skinny people in Canada

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Last Updated - 2026/07/01

Best Choice

01
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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02
NAKED

Naked Mass - Natural Weight Gainer Protein Powder - 8lb Bulk, NSF Certified, GMO Free, Gluten Free & Soy Free. No Artificial Ingredients - 1,250 Calories - 11 Servings

9.1 Taste

8.4 worth the money
Main highlights

PREMIUM COMPLEX CARBOHYDRATES: Unlike other weight gainer supplements that use wheat-based maltodextrins, Naked Mass is a serious, true mass gainer and uses gluten free organic tapioca maltodextrin for clean source complex carbohydrates.
ONLY THREE INGREDIENTS: Naked Whey, Naked Casein and Organic Maltodextrin (made from gluten free organic tapioca). 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: Gain weight with grass-fed whey and casein that provides your body with healthy amino acids to keep protein synthesis up throughout the day. Transform yourself from a hard gainer to a pro gainer.
MAXIMUM NUTRITION: 50g of Protein, 252g of Carbs, 1,250 Calories, 11.5g of BCAAs (branched-chain amino acids) per serving and only 5g sugar.
BEST WEIGHT GAINER SHAKES AND RECIPES: Our unflavored super mass gainer protein powder is versatile for making smoothies and recipes. Boost calories and give your body optimum nutrition by adding Naked Mass to protein bars, cookies and more.
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9.6

Exceptional

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03

Independently published

How To Gain Weight For Skinny People: The Ultimate Guide for Men and Women

9.4

Excellent
04
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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9.3

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)

11% Off
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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9.2

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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9.1

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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9.0

Excellent

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08
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

8.9 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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8.9

Very Good

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09
IRONVEGAN

Athlete's Gainer Protein Powder, Natural Chocolate Flavour, 2.5 kg | Vegan and Non-GMO(Packaging May Vary)

8.0 worth the money

8.0 Taste
Main highlights

TESTED FOR SPORT: Athlete's Gainer is tested for banned substances and certified by Informed Sport so even the most elite athlete's can enjoy the power of plant-fueled performance.
MUSCLE GROWTH GAINS: IRON VEGAN Athlete’s GAINER is a plant-based, high protein, high calorie supplement formulated to support healthy weight gain. ATHLETE's GAINER provides you with 720 clean calories at a 2.85:1 carbohydrate to protein ratio so that you can gain muscle mass.
GREAT TASTE WITH A SMOOTH TEXTURE: Gone is the gritty, grainy mouth feel of a typical vegan protein. In its place is a smooth, delicious flavour and a creamy texture that will almost certainly surprise you. This great tasting, smooth formula is formulated for ingredient-conscious athletes to build muscle. Athlete's Gainer is tested for banned substances and certified by Informed Sport so even the most elite athlete's can enjoy the power of plant-fueled performance.
CLEAN, REAL FOOD INGREDIENTS: Athlete's Gainer provides you with 42 grams of protein, 12 grams of fibre, and only 1 gram of sugar per serving! With added greens, fruit concentrates, sea vegetables, plant oils, and sprouted grains, this plant-based gainer helps to fuel your muscle growth so you can perform at a high level. Real food ingredients, real fuel. Made in Canada from imported & domestic ingredients.
42 g OF PROTEIN: Each serving of Iron Vegan Athlete's Gainer delivers 42 grams of plant-based protein with a complete amino acid profile, and is sourced from Organic Sprouted Brown Rice protein and Fermented Pea protein
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8.8

Very Good

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10
NAKED

Naked Mass - Vanilla Vegan Weight Gainer - 8lb Bulk, GMO Free, Gluten Free, Soy Free & Dairy Free. No Artificial Ingredients – 1,230 Calories – 11 Servings

8.0 Taste

8.0 worth the money
Main highlights

VEGAN NUTRITION: Each serving of our vanilla vegan weight gain powder contains 50g of Protein, 245g of Complex Carbs, 1,230 Calories and 10.3g of BCAAs (branched-chain amino acids). To ensure a complete amino acid profile, the ratio of pea to rice protein is 2:1.
REAL CLEAN PROTEIN: Gain weight the right way with our lactose free weight gainer, which contains our premium Naked Pea and Naked Rice protein. Vanilla Naked Vegan Mass provides your body with the amino acids it needs to maintain protein synthesis and help you gain muscle when used with a weightlifting fitness routine.
PREMIUM COMPLEX CARBOHYDRATES: Unlike other vanilla vegan weight gainer supplements, Vanilla Naked Vegan Mass does not use wheat based carbohydrates, instead using gluten-free organic tapioca maltodextrin for a clean source of complex carbohydrates.
ONLY FIVE INGREDIENTS: Pea Protein Powder, Organic Rice Protein Powder, Organic Maltodextrin (made from gluten free organic tapioca), Organic Coconut Sugar and Vanilla. Naked Vegan Mass contains no artificial sweeteners, flavors, or colors and is GMO Free, Soy Free, Gluten Free, and Dairy Free with no rBGH or rBST.
IDEAL FOR VANILLA WEIGHT GAINER SHAKES: Our vanilla vegan mass gainer has a mild flavor profile so you can easily control what goes into your body and flavor as desired with fruit such as a banana or blueberries. For use by men or women that prefer a non dairy weight gainer.
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8.7

Very Good

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