Updated: September, 2025

10 Best Weight Gainers in Canada

Save up to 20% Off

1

Optimum Nutrition

9.9

Exceptional

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)

Why we love it

High protein content supports muscle growth.

Contains essential vitamins and minerals.

Easy to mix with any beverage.

Main highlights

High Protein and Caloric Support
60g of protein per serving with 650 calories for daily intake.

Ideal for Nutritional Goals
Perfect for those looking to increase daily caloric and nutrient intake.

Praised for Delicious Flavors
Customers love the Double Chocolate and Vanilla Custard options.

More info
How do we rank?

How do we rank
Our AI-powered platform ranks products using multiple weighted factors from millions of products and user reviews across the web, providing the most valuable and real data. Higher scores rank first.
2

MAMMOTH

9.7

Exceptional

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

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.

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.

More info
3

Mutant

9.5

Excellent

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

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.

CRASH WEIGHT GAIN | Made for extreme hard gainers looking to add serious MASS!

More info
4

ALLMAX Nutrition

9.3

Excellent

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

20% Off

Main highlights

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.

More info
5

Mutant

9.2

Excellent

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

Main highlights

Made with natural whole foods (barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed and sunflower oil)

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)

More info
6

Six Star

9.1

Excellent

Six Star Mass Gainer Protein Powder, Six Star Mass Gainer, Muscle Builder Whey Protein Powder and Creatine Monohydrate, Max Protein Weight Gainer for Men and Women, Creatine Supplements, Chocolate, 4.36 lbs

Main highlights

Six Star Mass Gainer isn't loaded with sugar and fat. In fact, it delivers more of the high-quality carbohydrates and calories

Six Star Mass Gainer is a powerful weight gain formula engineered to help athletes get the nutrients they need to grow bigger and stronger

Increases Muscle Strength and Performance, Mega-Dosed with 45g of Protein and 189g of Complex Carbs

More info
7

Sunshine Biopharma

8.8

Very Good

Extreme Mass weight gainer muscle builder, 10 lb (4.54 kg) with less sugar for intense workout training made of high calorie fortified whey protein (Chocolate)

Main highlights

Supports Lean Muscle Growth & Strength Gains; The high-protein formula provides essential amino acids to increase muscle size and strength while keeping fat gain in check.

Optimal Nutrition for Performance & Recovery; A precise blend of whey protein, fast-digesting carbs, and essential micronutrients fuels workouts, prevents deficiencies, and sustains peak athletic performance.

Accelerates Recovery & Reduces Muscle Breakdown; BCAAs, creatine, and glutamine promote rapid muscle repair and minimize post-workout soreness, ensuring you’re ready for your next training session.

More info
8

IRONVEGAN

8.6

Very Good

Athlete's Gainer Protein Powder, Natural Vanilla Flavour, 2.5 kg | Vegan and Non-GMO

Why we love it

High protein for muscle growth.

Smooth texture, great taste.

Tested for banned substances.

Main highlights

High Protein and Calorie Boost
Delivers 42g of protein and 720 calories per serving for muscle gain.

Ideal for Athletes
Perfect for athletes seeking plant-based, high-calorie nutrition to support training.

Smooth Texture and Taste
Praised for its smooth, creamy texture and delicious vanilla flavor.

More info
9

Progressive

8.5

Good

Progressive SPORT Real Food Gainer - Vanilla

Main highlights

90g of clean carbs ââ‚¬â€œ to restore glycogen stores post-workout and keep your body fully fueled

30g of CERTIFIED New Zealand Protein to build and maintain your muscle. New Zealand protein comes from the cleanest source in the world with no antibiotics, growth regulating steroids, or milk inducing hormones (including Rbgh)

19 REAL food ingredients, including sweet potato, quinoa, avocado and tart cherry to feed and fuel your body with good, clean nutrition

More info
10

NAKED

8.4

Good

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

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.

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.

More info

Discover top deals and categories on AmazonCheck Deals

Our top pick

1

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)
Gold Standard Pro Gainer is a premium mass gainer powder designed to support muscle growth and daily caloric intake with 60 grams of protein and 650 calories per serving. It features a balanced blend of over 20 essential vitamins and minerals, including iron, calcium, and vitamins C and E, ensuring comprehensive nutritional support. Ideal for those aiming to boost their daily intake, this mass gainer is praised for its easy mixing and delicious flavors, available in Double Chocolate and Vanilla Custard. Whether blended with water, milk, or your favorite beverage, it provides a smooth and convenient shake for on-the-go consumption. With its high protein content and nutrient-rich profile, Gold Standard Pro Gainer is perfect for fitness enthusiasts and anyone looking to enhance their nutritional regimen.