Best Natural Sports Nutrition Weight Gainers in 2026

Vitamin C, Zinc and Vitamin D Provide Immune Support along with Vitamin E

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Packaging may vary - New look, with the same trusted Quality!

10.7 grams of BCAAs as building blocks, including 5.1g Leucine, as building blocks to help activate Muscle Protein Synthesis

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1310 calories and 245g carbs per serving to help even the hardest gainers pack on mass

NOW Sports products are comprehensively tested so you can trust that our products are pure and effective for every level of athletics.

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COMPLEX CARBOHYDRATE: Carbo Gain is pure maltodextrin, a complex carbohydrate derived from non-GMO corn.

High-Speed Macronutrient Delivery: Proteins and carbohydrates that are absorbed at high speeds can help spike your blood amino acid and glucose levels. In turn, this stimulates the potential for higher speeds of protein and glycogen synthesis (anabolism), which can result in faster gains in muscle mass.

Properly-Timed Insulin Optimization: Insulin is a powerful muscle growth and recovery hormone, so much so that pro bodybuilders and athletes seek to increase their natural product and proclaim amazingly fast gains. Yes, insulin is that anabolic and effectively triggers muscle growth, especially in combination with a fast acting protein. Read on to discover how CARNIVOR MASS can help you reap insulin’s extreme muscle building effects.

350% more concentrated in amino acids than steak and more concentrated than whey, with no fat or cholesterol, and without gelatin or collagen. Plus, CARNIVOR MASS is further enhanced with BCAAs for additional anabolic power.

Safe And Effective FIRST

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In an industry with questionable legislation, RIVALUS raises the bar for standards and quality far beyond the legal requirement or government regulatory bodies.

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.

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 - compare vs other weight gain supplements for bulking.

MULTI-PHASE CLEAN PROTEIN: Keep protein synthesis up by combining fast release grass-fed whey with slow-digesting micellar casein. Plus, get the healthy amino acids your body needs. Combine with a high-calorie diet and exercise to gain weight and transform yourself from a hard gainer to a pro gainer.

TRUE-MASS: 700 CALORIES PER SERVING – the extra nutrition your body needs to build mass in an extreme training program.

2:1 RATIO OF CARBS & PROTEIN – provide your body a high-quality mix of carbs and protein to support your mass gaining goals

46G-50G PROTEIN FROM ULTRA-PREMIUM PROTEIN SOURCES – whey protein concentrate, calcium caseinate, milk protein isolate, whey protein isolate, micellar casein, hydrolyzed whey protein, and egg whites

ENHANCED GAINER SUPPLEMENT | Mutant’s most popular weight gainer supplement that is packed with BCAAs/EAAs and waxy maize to help with growth and bulking.

PROTEIN CONTENT | It offers 1100 calories per serving plus 56 g of quality protein from whey isolate, concentrate and casein blend.

Made with Natural Whole Foods | Made from natural whole-foods to include barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed and sunflower oil.

ONLY THREE INGREDIENTS: Pea Protein Powder, Organic Rice Protein Powder and Organic Maltodextrin (made from gluten free organic tapioca). Vegan Naked Mass contains no artificial sweeteners, flavors, or colors and is GMO Free, Soy Free, Gluten Free, and Dairy Free with no rBGH or rBST.

VEGAN NUTRITION: Each serving of our unflavored vegan weight gainer powder contains 50g of Protein, 248g 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 vegan weight gain supplements, Naked Vegan Mass does not use wheat based carbohydrates, instead using gluten-free organic tapioca maltodextrin for a clean source of complex carbohydrates.

All natural delicious flavor, flavored with sea salt, stevia, vanilla and monk fruit extract

Animal Meal Protein Blend - Pea Protein Isolate, Instant Egg White, Dried Whole Egg Protein, Beef Protein Isolate

Animal Meal Carb Blend - Sweet Potato Powder, Pea Starch, Tapioca Dextrose, Rolled Oats

Contains one (1) 5 pound cannister (about 14 servings) of Muscle Milk Pro Series Gainer Protein Powder Supplement. Packaging may vary. Shaker bottle sold separately

KEY FEATURES – Based on 1 serving, Muscle Milk Pro Series Gainer contains 32g high-quality protein, 109g carbs, 650 calories, 2g MCTs, and an excellent source of 20 vitamins and minerals

VERSATILE AND EASY-TO-MIX – Muscle Milk Pro Series Gainer dissolves easily in water; just mix 4 scoops into 10-16 fluid ounces of water using a shaker bottle. Shaker bottle sold separately

MASS GAINER PROTEIN POWDER – MuscleTech Mass-Tech Elite is an advanced muscle mass gainer for those who have struggled with adding size, are in their bulking phase or want to break through their strength plateaus..

MUSCLE BUILDER – Mass-Tech Elite delivers 20% better amino acid absorption. ProHydrolase is designed to maximize the performance benefits of protein assisting the body in absorbing EAAs for building muscle and improving muscle recovery..

SUPERIOR WEIGHT GAINER – It’s clean and simple. Delivers more protein (80g), better calories and bigger results than other mass gainers, with the macros you need to pack on quality mass

Muscular Health, Function, and Performance*: Genius Muscle by The Genius Brand optimizes every aspect required for muscle growth with measurable results in men and women.* Made in the USA with a 100% transparent formula. Naturally flavored and sweetened with no banned substances. Strawberry Vanilla Cream flavor. 30 scoops per container.

Increase Power and Endurance*: Peak O2, an organic combination of 6 Ayurvedic mushrooms, has been shown to improve workout duration, strength, time to exhaustion, and much more.* Mediator Phosphatidic Acid has been shown to provide double the muscle mass gain, increased strength, and fat mass loss in individuals engaged in weight-bearing exercise and adequate protein intake.*

Healthy Muscles, Healthy Life: Build ageless muscle without altering hormone function.* Premium ingredient MyoeDge combines HMB with Vitamin D to promote muscle health, improve lean muscle mass, increase muscle function, and optimize bone quality.*

One 4 lb container of Body Fortress Super Advanced Mass Gainer Chocolate Whey Protein Powder

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Formulated to be the ultimate muscle mass builder with essential nutrients that help in building size, lean mass and strength (1)

UNLOCK THE KEY TO MUSCLE GROWTH - Sports research has shown that 30 minutes after your workout your body is primed for a post workout recovery drink. Aftershock, with 34g of lactose free, fast digesting proteins, rapid absorption carbohydrates, and a perfect blend of amino energy is ideal for improving gains, recovery and endurance.

SURGE PAST GENETIC LIMITATIONS - Formulated with our patented high absorption MagnaPower, magnesium creatine chelate, and magnesium glycyl glutamine, this blend is designed to help you get the most out of every workout.

AMAZING PERFORMANCE - Contains vital nutrients in the right amounts critical for muscle growth and recovery. Whey protein isolate and whey peptides support lean muscle mass growth and BCAAs amino acids help in recovery, the result, decreased muscle soreness, reduced exercise fatigue and increased lean and strong muscles.

Amplify Caloric Intake

22 grams of Carbs, 10 grams of Protein per serving

Enhanced Calorie Absorption Formula

MASS GAINER PROTEIN POWDER – Mass-Tech Extreme 2000 is a 5-in-1 hardcore mass gainer designed for individuals looking to put on extreme mass. Mass-Tech Extreme 2000 has everything you need to bulk up, pack on muscle and smash through strength plateaus

MUSCLE BUILDER – Mass-Tech Extreme 2000 delivers more protein per serving than most other mass gainers. With a whopping 80g of premium protein, your body will have all the building blocks it needs to build the size and muscle you’re looking for

SUPERIOR WEIGHT GAINER – It’s clean and simple. Delivers more protein (80g), better calories and bigger results than other mass gainers, with the macros you need to pack on quality mass

HIGH PROTEIN CONTENT - Packed with high-quality protein, Forzagen's lean muscle mass gainer protein powder is designed to help you gain weight and build muscle mass.

EFFECTIVE WEIGHT GAINER - This high calorie protein powder for weight gain is ideal for both men and women looking to gain weight in a healthy and balanced way.

CALORIE RICH - Our weight gainer protein powder for men and women contains high calories, making it an excellent supplement for those needing an extra energy boost. Our premium lean gainer is a natural carb source with oats, sweet potatoes and yams.

42 g of non-GMO plant-based protein

Over 700 calories, 12 g of fibre and only 1 g of sugar!

2.85:1 carbohydrate to protein ratio

Gain Weight FAST Appetite booster with B12 Gainer. Works great for Women Men Kids and the frail'. Naturally increases Appetite Gaining weight fast! 3rd Party APPROVED

Powerful ingredients that will Boost your appetite FAST. Help Restore maximum nutritional absorption Boost your muscle and weight with a complete dose a powerful weight gain product available in delicious disovlable for complete absorption. Stop being the skinny Kid, .Fill those Jeans and Bathing suits. Appetite

Fast Weight Gainer Is your Family member underweight and need to eat more, stimulate their appetite? Are you kids or Parents in need of eating more? Do you want more curves? Weight Gainer fast formula available. stimulates Health appetite to gain weight FAST! Improves Nutritional absorption to Maximize natural weight gain. Boost your loved ones Appetite. If your or Loved one is Underweight Scrawny need help to improve health, Appetite, B12 gaainer is the product for you! Appetite cur

CURVE ENHANCING SHAKE: Boost your curves! Gluteboost ThickFix protein powder helps you put on weight in all the right places. Our proprietary, body volumizing grass-fed whey protein formula with amino acids supports muscle mass and enhances your feminine curves faster than just diet and exercise.

BOOST YOUR GAINS: Maximized muscle mass and healthy curves depend on higher caloric intake. ThickFix's muscle-focused, protein-based powder with amino acids boosts your calories the right way, giving you more to work with in and out of the gym. Take daily for the best results.

FAST ENLARGEMENT: Get the voluptuous curves of your dreams with our proprietary ThickFix protein shake. Confidently fill out your figure with a firmer, more developed butt, thighs, and legs sooner. Use ThickFix as a supplement to your regular meals, taking 1-3 times per day to increase your calories and achieve your desired body weight.

MASS GAINER PROTEIN POWDER – Mass-Tech Extreme 2000 is a 5-in-1 hardcore mass gainer designed for individuals looking to put on extreme mass. Mass-Tech Extreme 2000 has everything you need to bulk up, pack on muscle and smash through strength plateaus

MUSCLE BUILDER – Mass-Tech Extreme 2000 delivers more protein per serving than most other mass gainers. With a whopping 80g of premium protein, your body will have all the building blocks it needs to build the size and muscle you’re looking for

SUPERIOR WEIGHT GAINER – It’s clean and simple. Delivers more protein (80g), better calories and bigger results than other mass gainers, with the macros you need to pack on quality mass

EPI 2.0 Is A Hard Lean Muscle Mass Gainer

Made In The USA

PROMOTES MUSCLE GAINS IN SIZE AND HARDNESS: A natural supplement that uses advances in technology and scientific discovery to help your body create more hard lean muscle mass.

Excellent source of Vitamin B12, Vitamin D, and Iron. High-protein, high-calorie, & complete amino acid profile.

No artificial sweeteners, colors, or flavors. No added sugar. No GMOs. No gluten. No dairy. No soy.

No Bloating: Gut friendly formula containing healthy fats from virgin olive oil and carbs from tapioca and organic banana powder.

Mass Pro is formulated with 127 grams of carbohydrates to help boost daily calorie intake, help the body store energy, and build muscle mass- as mass building requires energy through high-carb intake.

Mass Pro is uniquely formulated with 64 grams of whey protein concentrate to help increase muscle mass efforts and to help support muscle repair/ muscle recovery through its rich amino acids profile.

Mass Pro is formulated with a healthy fats blend of avocado powder, coconut oil powder, and MCT oil powder to help the complete the protein-carb-fat ratio to boost calorie intake for maximum gains.

Low Sugar Protein Powder: With only 6g of sugar per serving, helps you build mass without a lot of added sugar.

Digest Over Time: This protein shake powder has both fast and slow-digesting proteins for maximum benefits.

Protein Blend: 48g of high-quality muscle mass gainer protein from 6 different sources to keep your body growing.

SCIENTIFICALLY FORMULATED LEAN MUSCLE ACTIVATOR - Lean Gainz was scientifically engineered and reloaded with superior nutrients to target lean muscle growth. Providing 44 grams of pure Whey Protein, Whole Food Complex Carbohydrates, premium Healthy Fats, and additional key ingredients, Lean Gainz Reloaded is ready to take your protein shake regimen to the next level.

WHEY PROTEIN + EAAS + BCAAS - By providing 44 grams of Whey Protein, 20 grams of Essential Amino Acids, and 9.5 grams of BCAAs, Lean Gainz Reloaded is stacked with high-quality muscle building ingredients at powerful dosages. Our high dosages help promote protein synthesis, protein utilization, and faster recovery to help maintain healthy strong muscles.

WHOLE FOOD CARBOHYDRATES GLYCOGEN REPLENISHMENT - Superior Whole Food Complex Carbohydrate Complex to provide sustained energy + glycogen replenishment while helping to avoid the common insulin spike/crash after intense exercise. Includes ModCarb, which is packed with organic oat bran, organic chia, organic quinoa, and more as sources of carbohydrates. Also includes Carb10, which is from pea starch and is known as a fast acting carbohydrate.

BIGGERBYTHEDAY is the most potent muscle building supplement on the market! We took the most powerful all-natural muscle building ingredients available and combined them into one incredible product, making it the strongest of its kind.

1000 MG OF PURE TURKESTERONE, a more effective Ecdysteroid that stimulates protein synthesis and strength, enhancing lean muscle gains. With anti-catabolic benefits, it also supports muscle retention during calorie restriction & injury recovery. (Industry testing standards for concentration don't exist. Don't be fooled by hyped claims of 10%, 20%, etc.)

300 MG EPICATECHIN is a flavonol that simultaneously stimulates nitric oxide production and inhibits Myostatin, the compound that limits muscle growth in the body. Block Myostatin and you raise the roof on potential gains!