The 17 Best Weight Gainers for Skinny Guys

This post may contain affiliate links. (What's this?)

Rounding up the best weight gainers for skinny guys is a cause that’s near and dear to my heart. 

Back when I was a scrawny 21-year-old comic book geek, I weighed 140 lbs soaking wet and wanted two things out of life: 

Big muscles, and the attention they often attract. 

A (sadly quite accurate) artistic rendering of me when I first started weightlifting

By the time I was a 25-year-old comic book geek (hey – some things never change), I had packed on 40 lbs of lean muscle mass while managing to keep my body fat percentage down below 20%. 

I wish I could say I did it solely by working out and sticking to a healthy diet of nutritious whole foods. 

But the truth is that for guys like me – hard gainers with an annoyingly fast metabolism – relying on real food alone often isn’t enough. 

That’s where a good mass gainer supplement comes in.

A proper weight gainer supplement contains more grams of protein than your standard whey protein concentrate, along with a wide range of other essential nutrients that help muscles grow.

When paired with a good weight training regimen and a clean diet, it’ll help you get the extra calories you need to (thankfully, finally, mercifully) build muscle. 

To help you make some serious muscle gains, in this post I’ve rounded up more than a dozen of the best weight gainers for skinny guys who want to go from scrawny to brawny.

The 17 Best Weight Gain Supplements for Skinny Guys 

Breaking Down the Best Mass Gainers for Skinny Guys to Pack on Muscle
Overall Best Weight Gainer for Skinny Guys ↓

Naked Mass Natural Weight Gainer

Naked Mass Natural Weight Gainer

  • 4.8 Stars
    • 421 Reviews

As mentioned, weight gainers are the best way for skinny guys to pack on muscle mass. 

But if you want to stay lean while significantly increasing your calorie intake, you have to make sure that any weight gain supplement you use is clean, healthy, and free of unhelpful filler. 

That’s why Naked Nutrition’s “Naked Mass” is such a great option. 

In addition to being GMO-free, it contains 50 grams of protein, 252 grams of carbs and 1,250 calories, without adding any artificial sweeteners, flavors, or colors. 

After completing an extensive review of Naked’s “Less Naked” whey protein powder, I declared it the single best protein powder I’ve ever tried, so it’s no surprise that their Naked Mass gainer tops the list as the best bulking powder for skinny guys.

Promising Review:

I don’t usually leave reviews, but I’m taking the time right now to review this product because I absolutely love it! 

I’ve been using it daily, once or twice, for about 2 weeks now and I have managed to gain 3 pounds on top of my doing cardio and weights 5-6 times a week. My muscles also feel and look fuller and people are noticing.

All Bets On

Check Price ➤


Optimum Nutrition Serious Mass Weight Gainer

Optimum Nutrition Serious Mass Weight Gainer
  • 4.5 Stars  
    • 46,219 Ratings 

Admittedly, this product doesn’t have quite as much protein as another Optimum offering, the Optimum Nutrition Pro Gainer

(There’s 60 grams of protein in each scoop of the Pro Gainer, versus 50 in this one, the Serious Mass Gainer.) 

But the Serious Mass Gainer has more than double the grams of carbs, which gives it a higher calorie count and makes it the overall best option for muscle growth.  

Promising Review: 

When I first started taking this supplement, I was easily gaining about 3-5 pounds a month… Fast forward 2 years, I went from 130 pounds to 180 pounds and sitting at about 18% body fat.

I would highly recommend this to anyone who has trouble gaining weight or just simply wanting to bulk. 

michaelra23

Check Price ➤


Dymatize Super Mass Gainer

Dymatize Super Mass Gainer
  • 4.5 Stars  
    • 8,675 Ratings 

From the Serious Mass Gainer to the Super Mass Gainer powder, Dymatize is another popular supplement company with a long history of making protein supplements. 

Their mass gainer shake contains all the key elements you need to activate muscle protein synthesis, including BCAAs, leucine and creatine monohydrate. 

Promising Review: 

I am really liking this gainer. The serving size is kinda monstrous, but I break it down into 4 equal portions for the 1200 plus calories and so far so good. 

Have tried many other weight gain products, this is the only one that I’m finally seeing results.

Joy

Check Price ➤


BSN TRUE-MASS Weight Gainer

BSN TRUE-MASS Weight Gainer
  • 4.5 Stars  
    • 4,781 Ratings 

BSN’s True Mass weight gainer easily earns its place on any list of the best mass gainer supplements on the market. 

Each scoop contains 46 to 50 grams of whey protein and provides up to 700 calories per serving, making it a great choice for those who have traditionally struggled to build body weight. 

Plus, it’s available in four different flavors, which provides a nice bit of variety, especially for those who get sick of chugging down the same ol’ shakes on a daily basis. 

Promising Review: 

I started using this product 6 days ago. My starting weight was 125.4 lbs. I am now at 128.6 lbs so I have gained 3.2 lbs in only 6 days… 

The vanilla tastes good, it’s not chalky, and digests easily. No bowel movement changes or issues. I recommend using a blender for the best results. I personally use a magic bullet blender.

For my size and metabolism it’s been difficult to intake enough calories to gain weight. These shakes make it super easy.

brenden coviello

Check Price ➤


MuscleTech Mass-Tech Extreme 2000 

MuscleTech Mass-Tech Extreme 2000 
  • 4.4 Stars  
    • 3,410 Ratings 

As its name implies, MuscleTech is a company whose products are all dedicated to helping you build lean mass while avoiding the dreaded fat gain. 

Their weight gainer shake contains the nutrition you need to do just that, including (a somewhat insane) 80 grams of protein per scoop along with medium chain triglycerides, which contain the type of fatty acids that can help promote weight loss. 

Promising Review: 

I believe it has been 3-4 months I’ve been on this gainer. I have gone from 158-170 in that time. I weigh 175 before bed and growing. 

This is great, with resistance training 3-4 times a week these gains are so possible.

william douglass

Check Price ➤


Rivalus Clean Gainer

Rivalus Clean Gainer
  • 4.5 Stars  
    • 2,118 Ratings 

Blending 30 grams of protein with a 90-gram blend of complex carbs, the Rivalus Clean Gainer will help you pack on size without expanding your waistline. 

The powdered form comes in six different flavors, and they also offer weight-gainer bars for those who can’t be bothered to mix up a protein shake. 

Promising Review: 

I have tried COUNTLESS gainers over the years, and this one is probably the best as far as mixability, taste, and gastro-tolerance. 

No clumping, clean tasting, very well made product with the perfect calorie count. If you’re looking a gainer you can comfortably use long term for “MAX GAINZ BRO”, look no further.

Bootney Lee Farnsworth

Check Price ➤


Body Fortress Super Advanced Mass Gainer

Body Fortress Super Advanced Mass Gainer
  • 4.3 Stars  
    • 1,089 Ratings 

This “Super Advanced” mass gainer from Body Fortress contains 40 grams of protein and eight essential amino acids per scoop. 

It’s a good choice for those who worry that there just isn’t enough protein in regular protein powders, and those who want to get some of the other essential building blocks of muscle (BCAAs, creatine) without needing to buy a separate product. 

Promising Review: 

Taste great and it’s a great deal so the money…

Protein drinks have come a long way in the past 20 years and this stuff tastes pretty good. What’s most important to me though is getting a large dose of protein after working out.

T. A. Walsh

Check Price ➤


MuscleMeds Carnivor Mass Chocolate Big Steer

MuscleMeds Carnivor Mass Chocolate Big Steer
  • 4.5 Stars  
    • 214 Ratings 

Whereas many protein and mass-gaining shakes bypass digestive enzymes and delay absorption by your muscles, MuscleMeds’ “Carnivor Mass” weight gainer is designed to  enhance carbohydrate breakdown and encourage higher insulin spikes.

Derived from beef protein isolate (hence “carnivore” branding), it contains 1,250 calories, 50 grams of protein and 255 grams of carbs.

Promising Review: 

I have taken this stuff off and on for about a year. Best gainer I have tried and I have tried many. I really thicken up when I use this supplement. 

The newer formula dissolves much better in my shakes, which makes for a clump free mix with less water(or milk).

Daniel Howard

Check Price ➤


Myogenix Aftershock Critical Mass

Myogenix Aftershock Critical Mass
  • 4.6 Stars  
    • 187 Ratings 

Another solid option for those who are putting in their time at the gym but still have a hard time building muscle, this offering from Myogenix includes 52 grams of protein per scoop. 

In addition, it’s mixed with creatine monohydrate, which helps promote muscle growth, and glutamine, which aids in recovery. 

So it’s not only a great way to get a lot of calories immediately after your workout, it can also help your muscles recover – and more importantly for growth, regenerate – for a fairly long time after you pump. 

Promising Review: 

I’ve gained 10 pound in three months using 1 and a half scoops in the morning and same at night. Tastes as good as a protein shake will. 

Blends well (I add peanut butter powder, olive oil, and milled flax seed for extra calories and health benefits).

Sherfam

Check Price ➤


Jacked Factory Growth Surge

Jacked Factory Growth Surge
  • 4.5 Stars  
    • 3,505 Ratings 

Most of the other products on this list use protein powder as their base, then add in additional elements that help stimulate muscle growth. 

But if you already have a ton of regular protein powder and don’t want to shell out for more, there’s good news: 

You don’t have to.

Jacked Factory’s Growth Surge can be added to traditional protein shakes to help you get some additional muscle-building supplements, without having to buy another tub of protein powder. 

It includes creatine monohydrate,  L carnitine, L tartrate, betaine and bioperine, a combination that will help improve your post-workout recovery, stimulate muscle building and reduce muscle soreness.  

Promising Review: 

My wife asked me was it legal, because of the growth of my chest and arms, I definitely would use this again. 

Deacon Rick

Check Price ➤


ALLMAX Nutrition Quick Mass

ALLMAX Nutrition Quick Mass
  • 4.5 Stars  
    • 46 Ratings 

Containing healthy minerals like vitamin C, calcium and iron (not to mention 60 grams of protein), this weight gainer from All Max provides a ton of nutritional value in each scoop. 

And since each one contains more than 1,000 calories, you can mix it with water instead of milk or nut milk, making it easier (and cheaper) to prepare each shake.

Promising Review: 

My son is trying to go up a weight class during wrestling season and Quick Mass has helped pack in size and muscle.

Frank Castle

Check Price ➤


Gaspari Nutrition Real Mass

Gaspari Nutrition Real Mass
  • 4.2 Stars  
    • 46 Ratings 

Gaspari’s Real Mass powder contains a whopping 1,200 high-quality calories in each scoop. 

Each one gives you 47 grams of protein and 188 grams of total carbs, along 35% of your daily calcium and smaller doses vitamins A and C.

Promising Review: 

Good product, gained 5 pounds in 3 weeks!! Recommended 😉

– francesco paudice

Check Price ➤


VMI Sports Major Mass

VMI Sports Major Mass
  • 4.5 Stars  
    • 83 Ratings 

With a 1 to 3 ratio of protein to carbs (as opposed to 1 to 5 in some other brands), VMI’s Major Mass gainer is laser-focused on helping you build muscle without adding much fat. 

It’s chock full of healthy fats and medium-chain triglycerides derived from avocado powder and coconut oil, which will help you put on mass without looking or feeling bloated. 

Promising Review: 

love this stuff, i take 3 scoops instead of 4 as listed. but good taste and does not upset my stomach like alot of the other mass gainers.

Jared

Check Price ➤


Naturade Weight Gain

Naturade Weight Gain
  • 4.1 Stars  
    • 1,630 Ratings 

As its name implies, Naturade’s weight gainer keeps it clean by using all natural ingredients. 

It doesn’t have as much protein as most of the other gainers on this list, but includes plenty of other healthy, natural ingredients that make it a good addition to your stack. 

Promising Review: 

3 weeks ago I started out at between 134-137… Today is the 10th of April and I currently weighed in at 147.8. 

I been holding this size down for the last week and I only take it like 3 to 5 times a week.

lilmsbopeep

Check Price ➤


Mutant Mass Weight Gainer

Mutant Mass Weight Gainer
  • 4.4 Stars  
    • 1,645 Ratings 

Mutant’s weight gainer is simply called “Mass,” and it’s not hard to see why:   

It’s packed with 56 grams of protein, 192 grams of clean carbs and 12 grams of fat. 

It also includes 26 grams of essential amino acids and 12 grams of BCAAs, which form the building blocks of proteins.

Promising Review: 

So far it’s the best mass gainer I’ve bought. If you’ve tried different mass gainers you’ll know you feel like you just ate a full cake after drinking it. 

But with this one you don’t get that drowsy weird feeling much, it actually makes you feel energized. I think it’s because they use a lot less sugar to fill the calories in.

Dennis Dorantes

Check Price ➤


MRM All Natural Gainer

MRM All Natural Gainer
  • 4.4 Stars  
    • 452 Ratings 

Another natural gainer, each scoop of MRM Gainer contains 25 grams of  non-GMO, organic, gluten-free and vegan protein. 

Free of antibiotics and hormones, it mixes both fast- and slow-digesting proteins, including whey protein concentrate and isolate along with micellar casein, to provide both fast and slow digesting proteins. 

Promising Review: 

I tried other weight gainers because they offered more calories, but they were ridiculously sweet. 

So I’m back to where I started, and now I know I’m drinking the best weight gainer for me. With whole milk it’s close to 1,000 calories and mixes well and tastes good.

More Cowbell

Check Price ➤


Healthy ‘N Fit Anabolic Muscle

Healthy 'N Fit Anabolic Muscle Gainer
  • 4.4 Stars  
    • 41 Ratings 

With more than 90 grams of protein derived from whey, casein and egg protein, Healthy ‘N Fit’s Anabolic Muscle gainer packs a serious punch. 

In addition to the (insanely) high protein count, it’s also potassium rich and includes vitamins and minerals like calcium, chromium, magnesium and more. 

Promising Review: 

I only use 1 scoop a day first thing in the morning can tell a difference in strength and muscle development

Dwight Roberdon

Check Price ➤


More Men’s Fitness & Health Advice From Irreverent Gent:

The Recap ↓

Overall Best Mass Gainer for Skinny Guys: Naked Nutrition “Naked Mass”

Dave Bowden

Effectiveness
Taste

Summary

Naked Nutrition’s “Naked Mass” is the best weight gainer on the market. In addition to being GMO-free, it contains 50 grams of protein, 252 grams of carbs and 1,250 calories, without adding any artificial sweeteners, flavors, or colors.

4.8

About

Dave is a men's style blogger whose insightful (and of course, irreverent) advice on how to look good and live well is read by more than two million people each year.

When not obsessing over style and self-improvement, he can usually be found at home playing with his wife and son, indulging in a hoppy craft beer, or sobbing over the woeful state of Toronto's sports teams.