Mass Gainers

Pack on size and fuel serious muscle growth with our curated selection of mass gainer supplements for men. Mass gainers deliver the caloric surplus that hardgainers and high-volume trainees need to break through plateaus and build substantial size. Supplements.Men features quality mass gainers from leading brands that prioritize clean calories, complete protein sources, and functional carbohydrate blends over cheap fillers.
Choosing the Right Mass Gainer for Your Goals
A quality mass gainer protein powder typically delivers 500 to 1,500 calories per serving with 40 to 60 grams of protein alongside complex carbohydrates from sources like oat flour, sweet potato, and maltodextrin. The best formulas also include digestive enzymes to help your body process these calorie-dense shakes without bloating or discomfort. Look for products that derive their protein from whey isolate or a multi-source blend rather than relying on soy or low-quality concentrates.
Our collection includes moderate-calorie gainers around 600 to 800 calories for lean bulking, ultra-high-calorie options exceeding 1,200 calories for true hardgainers, and cleaner formulas with minimal added sugar for those who want extra calories without the junk. Brands like Transparent Labs, Optimum Nutrition, and MuscleTech offer proven formulas with strong amino acid profiles and great mixability. For optimal results, use a mass gainer to supplement whole-food meals rather than replace them, and time your shakes around training sessions when your body is primed for nutrient uptake.
Browse our mass gainer supplements below and start building the size you have been working toward.
Looking for help choosing? Read our Complete Mass Gainer Buying Guide or see our Best Protein Powders and Best Creatine Supplements guides for building mass.

Frequently Asked Questions

Who should take mass gainer supplements?

Mass gainers are designed for hard gainers (ectomorphs) who struggle to consume enough calories through whole foods alone. They are ideal for athletes, bodybuilders during bulking phases, and underweight individuals looking to gain healthy weight.

How many calories are in a typical mass gainer serving?

Mass gainer servings typically range from 500 to 1,500 calories per serving. They combine protein (40-60g), complex carbohydrates (100-250g), and healthy fats to create a calorie-dense shake that supplements your regular meals.

When is the best time to drink a mass gainer?

The best times are between meals when you need extra calories, post-workout when your body needs recovery fuel, or before bed for overnight muscle recovery. Avoid replacing whole food meals entirely — mass gainers should supplement a solid diet.

Will mass gainers make me fat?

Mass gainers can lead to fat gain if you consume more total calories than your body needs. To minimize fat gain, choose a mass gainer with a higher protein-to-carb ratio, track your total daily calories, and maintain a consistent workout program.

What is the difference between mass gainers and protein powder?

Protein powder provides 20-30g of protein per serving with minimal calories (100-150). Mass gainers provide 40-60g protein PLUS 100-250g carbs and healthy fats, totaling 500-1,500 calories. Use protein powder for lean muscle; use mass gainers when you need significant calorie surplus.

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