By providing a concentrated source of calories from high quality proteins and carbohydrates, mass gainers may help you gain lean body massTrusted Source when paired with a regular resistance training regimen.
Transparent Labs is a trusted brand in the supplement industry because all its products are third-party tested by Analytical Resource Laboratories. Plus, Transparent Labs’ website includes a certificate of analysis (COA) for each product, allowing you to access third-party test.
Rival Nutrition Clean Gainer is lower in calories and protein, with 560 calories and 30 g of protein per serving. Of all the products on this list, this one has the most flavor options. Five flavors are available — all sweetened by stevia and sucralose, an artificial sweetener.
Optimum Nutrition produces an award-winning line of supplements that are highly rated by consumers. Optimum Nutrition Pro Gainer contains a whopping 60 g of dairy-based protein.
Iron Vegan is a Canadian company that offers vegan sports nutrition products, including Athlete’s Gainer. The powder is sweetened with stevia and made with pea and brown rice protein, greens, fruit concentrates, plant oils, and sprouted grains and seeds.
Optimum Nutrition Serious Mass has almost twice as many calories per serving as its lower calorie counterpart. As with nearly all other mass gainers, the calories in this one come primarily from carbs — and this product has more than 250 g of carbs per serving.