7 Best Weight Gainers for Skinny Guys in 2018 – From Nerd to Beast!

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By using pregnenolone cream or pregnenolone supplements, the levels of the compound in the body increases, and this brings about various benefits such as fatigue relief, and delay of the aging process.

​These days, so much focus is out on weight loss that the best weight gainer supplements for skinny guys have been put aside. It’s unfortunate because being skinny is no small matter (pun not intended) if you are a man.

In most cultures, being manly is associated with being big and strong. If you want to bulk up fast, it’s high time you try some mass weight gainer supplements that naturally increase muscle mass and size.

Best Weight Gainer Supplements Comparison Table





Optimum Nutrition Serious Mass

Optimum Nutrition

  • Maltodextrin
  • Proprietary Protein Blend
  • Cocoa
  • Vitamin and
    Mineral Blend
  • L-Glutamine
  • Creatine
  • Medium Chain Triglycerides
  • Natural and Artificial Flavor
Natures Best Isopure Mass

Nature's Best

  • Maltodextrin
  • Ion Exchange Whey (Milk) Protein Isolate
  • Alkalized Cocoa Powder
  • Sunflower Oil
  • Vitamin/Mineral
    /Amino Acid Blend
  • Dipotassium Phosphate
  • Sucralose
  • L-Glutamine
  • Natural and Artificial Flavor

BSN Sports

  • Maltodextrin
  • Whey Protein Blend
  • BCAA
  • Sunflower Powder
  • Lecithin
  • FDandC Yellow #5
  • Xanthan Gum
  • Guar Gum
  • Acacia
    (Gum Arabic)
  • Sucralose
  • Acesulfame Potassium

Muscle Milk

  • Maltodextrin
  • Protein Blend (Whey, Casein)
  • L-Glutamine
  • Medium Chain Triglycerides
  • Soluble Corn Fiber
  • Natural And Artificial Flavor

NAKED nutrition

  • Naked Whey
  • Naked Casein
  • Organic Maltodextrin
  • Organic Coconut Sugar
  • Organic Raw Cacao
NOW Foods Carbo Gain

Now Foods

  • Maltodextrin
MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer


  • Creatine
  • Maltodextrin
  • BCAAs
  • Beef Protein Isolate


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    A Quick Look at the Best Weight Gainer Supplements

    If you want to naturally build muscle, you have to maintain optimal testosterone levels. You can work out for years and still won’t get satisfactory results if your testosterone levels are below normal.

    Now if you’re skinny, you also need to make sure you get proper nutrition and really eat an excess of calories to make progress with your gains. The best mass pro gainer can help you increase muscle mass. They are easy to consume since they are mixed with liquids to make drinks full of nutrition to fuel muscle growth.

    If you only have a few minutes, here is our quick summary of each:​

    Optimum Nutrition Serious Mass​

    This muscle and weight gainer shake gives an energy boost and contains plenty of calorie intake per serving, allowing you to optimize any training program.

    Nature's Best Isopure Mass

    Isopure is fully loaded with nutrients that bulk up your body such as BCAA, amino acids that are crucial in muscle development. It also contains easy-to-absorb 100% pure whey isolate.


    True-mass is deemed as one of the top weight gainers because it provides good amounts of proteins, BCAA, and carbs for energy and bulking up.

    Cytosport Muscle Milk Gainer Supplement

    This contains lots proteins derived from milk, providing 18 types of amino acids for weight gain diet.


    This comes in the simplest form, with only 3 important ingredients. It has no additives and fillers, only the necessary ingredients for weight gain.

    NOW Foods Carbo Gain

    This energy-booster contains maltodextrin derived from non-GMO corn. The carb content will help you in bulking up and making the most gains from your workout sessions.

    MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer

    This supercharged formulation from MuscleMeds is one of the best weight gainers for those who want great results. The protein source is beef protein isolate, which is a new and popular protein alternative to whey. This drink comes with insulin amplifying effects.

    The Best Weight Gainer Supplements Reviews

    This is one of the best mass gainers for those serious about gaining more weight.

    Each serving contains:

    • 50 grams protein
    • 1,250 calories
    • more than 250 grams of carbs
    • 25 minerals and vitamins
    • MCTs
    • Glutamine
    • Creatine
    Optimum Nutrition Serious Mass

    The best way to use this product is by taking it after weight training, between meals and before going to bed.

    Things We Liked

    • Great taste
    • Large amount of calories in only one serving for maximum weight gain
    • Great nutrtional profile

    Things We Didn't Like

    • Some might think the after-taste is a bit too sweet
    • Can cause some bloating
    Natures Best Isopure Mass

    This top super mass gainer is fully loaded. Each serving contains:

    • 600 calories
    • 53 grams pure whey isolate
    • 86 grams carbs
    • 11.5 grams naturally-occurring BCAA
    • 4.9 grams naturally-occurring L-glutamine

    Things We Liked

    • Easy to digest
    • Complete nutrition
    • Each serving gives huge helping of proteins and calories

    Things We Didn't Like

    • Serving with large amount of carbs
    • Very faint chocolate taste

    This product contains the best protein to gain weight, obtained from 6 top-quality sources.

    Per serving contains:

    • More than 45 gramsproteins
    • 0 grams carbs
    • 5 grams fiber
    • 10 grams BCAA
    • More than 700 calories

    Things We Liked

    • Rich and creamy
    • No chalky texture and taste
    • Great nutritional profile for weight gain and fuel workouts

    Things We Didn't Like

    • May cause bloating
    • May cause some diarrhea for sensitive people
    Cytosport Muscle Milk Gainer Supplement

    This is the best weight gainer for those who have a much easier time losing than gaining strength and size. This is ideal for those who do not have any issues with milk and milk proteins since most of the nutritional profile is derived from milk.

    Things We Liked

    • High quality proteins, rated with PDCAAS score of 1.0
    • 18 amino acids
    • Works with any training program

    Things We Didn't Like

    • May cause allergies if you are sensitive to milk

    This is the best weight gain supplement for those looking for the simplest, most basic product. It only contains 3 ingredients: naked casein, naked whey and organic maltodextrin. It has no artificial flavors, fillers or colors and is completely organic. This is our favorite clean gainer!


    Things We Liked

    • Super smooth
    • Blends well
    • Organic and simple formulation

    Things We Didn't Like

    • Limited ingredients (only 3)
    NOW Foods Carbo Gain

    This is among the best mass gainer based on carbohydrates. Easy to digest and absorb. The complex carbs (maltodextrin) are from non-GMO corn.

    Things We Liked

    • Mixes well with other ingredients
    • No noticeable taste
    • No allergens such as soy, egg or dairy

    Things We Didn't Like

    • Contains no protein or fat

    Each serving of this muscle and weight gainer product contains 50 grams of protein obtained from hydrolyzed BPI (beef protein isolate).

    The formulation also includes ingredients for increased insulin signaling and amplification, with reactive high-impact carbs. This insulin, carbs and protein combination is designed for explosive muscular growth.

    It is also loaded with BCAAs and creatine to prevent breakdown of muscle.

    MuscleMeds Carnivor Mass Anabolic Beef Protein Gainer

    Things We Liked

    • 350% more amino acids from beef
    • Great post-workout drink
    • Fast results, within 7 days

    Things We Didn't Like

    • iSpike technology (insulin amplifying feature) may cause problems in people with sugar and insulin conditions, e.g., with/at high risk for diabetes
    • May cause diarrhea for sensitive people

    What to Look for in Weight Gainers?

    Weight gaining supplements are different from the usual protein powders. The main difference is that weight gainers contain protein plus carbs and fats.

    Many people get confused with this. All too often they get disappointed when they find out their mass gainer contains carbs when what they really want is a protein shake powder.


    Vital Components of a Lean Weight Gainer Product

    You need proteins when you want to build lots of lean muscle. If you want to gain weight and mass quickly as well, then you need lots of calories both from protein, carbs, and fats from the best weight gain supplements you can find.

    Taking weight-gain supplements with plenty of carbs will help you gain muscle mass because your body will use it for energy instead of having to resort to breaking down proteins from your muscles. Fats are also an excellent energy source and aid in the absorption of essential vitamins like A, D, E, and K.

    Many types of weight-gain supplements will help you load up with the massive amounts of calories that you need to build body mass, and also benefit from more efficient vitamin and mineral absorption.

    Check Protein Quality

    When you choose your gainer, you first look at the quality and amount of protein it contains. This is shown as the BV or biological value. Higher BV values mean the protein content is higher and more easily digested and absorbed.

    Higher BV values mean the protein content is higher and more easily digested and absorbed.

    For instance, whey isolate has BV 159 while milk protein casein has BV 77. Whey isolate is more readily absorbed and easier on the digestive tract than casein.

    Lower BV proteins tend to be of less quality. However, it does not mean you have to stay away from these.

    You can take weight gain powder with low BV values when you want slower protein absorption. One example is when you want to take the weight gain shake before going to bed and make sure the protein is absorbed during the whole night.

    High-quality protein with a high BV value is best used after workouts to refuel muscles with amino acids needed for muscle building.

    Check Carb Amount

    Next thing to check is the amount of sugar och high GI carbs is in the gainer supplement. This is in terms of carbohydrates.

    Too much carbs at one time can cause too high insulin spikes. This can lead to symptoms such as irritability, headaches, and drowsiness.

    Insulin spikes will lead to more fat storage. This might also affect your appetite and will interfere with building muscle and safely gaining body weight. Insulin spikes are ok after workouts though when most of the carbs will be used for muscle repair instead of going to fat storage.

    The ideal amount of carbs in mass gainer supplements is around 30 to 60 gram of protein. If you can handle carbs well there is however no reason you cannot go higher then that.

    Check Fat Content

    You now know what kind of protein to look for and how many carbs should be there. How much fat then?

    The ideal ratio is two times more proteins than fats, and carbs twice as many as proteins. Our favorite type of fat for lean super mass gains is MCT (medium chain triglycerides) because they have a tendency to result in less fat gains and are quickly converted into energy by the liver.

    Our favorite type of fat for lean mass gains is MCT (medium chain triglycerides) because they have a tendency to result in less fat gains


    Bulking up fast even when you’re very skinny is possible with the use of the right weight gainer supplements. There are several on the market that caters to many individual needs, preferences, and conditions.

    Proteins and carbs work together for optimized training, muscle repair, and post workout recovery. Fats work for sustained energy and more rapid absorption of some vitamins into cells.

    Taking into consideration the pros and cons of each product in this list, our favorite product is LESS NAKED MASS since it contains the essentials and offer a clean and organic product. Don't compromise your health with downing lots of calories from products containing many artificial ingredients and additives.


    Product image credits: Amazon.com

    Alex Eriksson (Research Analysis)

    Alex Eriksson is the founder of Anabolic Health, a men’s health blog dedicated to providing honest and research-backed advice for optimal male hormonal health. Anabolic Health aspires to become a trusted resource where men can come and learn how to fix their hormonal problems naturally, without pharmaceuticals.

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