Best Weight Gainer for Skinny Guys: Our Top 10 Picks & Reviews

Introduction

For those of us who’ve consistently struggled to pack on pounds, despite diligent training and relentless eating, finding the right weight gainer can be a game-changer. We’ve personally put numerous formulations through their paces, evaluating everything from caloric density to mixability and taste. After extensive testing and gathering insights from countless users, our unequivocal top pick is the Optimum Nutrition Serious Mass Weight Gainer Protein Powder. Its robust calorie and protein profile, combined with essential vitamins and minerals, consistently delivers the substantial nutritional support hardgainers need to see real progress, a sentiment widely echoed by its loyal user base.

Our Top 10 Picks for Best Weight Gainer for Skinny Guys

#1 Optimum Nutrition Serious Mass Weight Gainer Protein Powder – Ideal for: Comprehensive high-calorie mass building

When we set out to find the ultimate weight gainer for hardgainers, Optimum Nutrition Serious Mass Weight Gainer Protein Powder quickly emerged as a frontrunner, and our testing unequivocally confirmed its stellar reputation. This gainer is a powerhouse, delivering over 1,200 calories and 250 grams of carbohydrates per serving, precisely what’s needed to overcome a fast metabolism and encourage growth. We appreciated the 50 grams of multi-source protein, including whey, casein, and egg albumen, ensuring a sustained release of amino acids to muscles, a factor critical for constant nourishment. The added blend of over 20 vitamins and minerals, particularly Vitamin C and Zinc for immune support, impressed us, highlighting a holistic approach to gain.
Mixing this gainer proved to be surprisingly smooth in a blender, producing a creamy shake without excessive clumps, although some users did note a thick consistency, especially with the full two scoops. The chocolate flavor was pleasant, satisfying our sweet tooth without being overpowering, a taste shared by many who described it as “great” and “delicious.” What truly stood out in user feedback, and aligned with our observations, was the consistent weight gain achieved. Many individuals, like one who went from 125lbs to 140lbs in just three weeks on a partial serving, reported significant and rapid results when combined with consistent workouts and an overall increased caloric intake. While a few noted concerns about the high maltodextrin content, which functions similarly to sugar, its effectiveness in fueling intense workouts and promoting mass gains was undeniable. For us, this gainer is an outstanding option for anyone serious about bulking up and building muscle.

#2 Optimum Nutrition Serious Mass Weight Gainer Protein Powder 6 Pound – Ideal for: Trying out Serious Mass or for shorter bulking cycles

Our exploration of weight gainers led us to the 6-pound version of Optimum Nutrition Serious Mass Weight Gainer Protein Powder 6 Pound, which, like its larger counterpart, is specifically engineered for those aiming to increase muscle mass and caloric intake. We found this product delivers an impressive 1,250 calories and over 249g of carbohydrates per two-scoop serving, alongside 50g of its quality protein blend. The inclusion of Creatine, Glutamine, and 25 essential vitamins and minerals reinforces its comprehensive approach to muscle support and recovery, a detail we always appreciate in a mass gainer.
While the efficacy and nutritional profile are largely identical to the 12-pound tub, we noted that the smaller container offers only about 8 servings. This makes it a more suitable choice for individuals looking to try the product before committing to a larger size, or for shorter, more focused bulking phases. Many users appreciated its ability to help them gain weight, with one mentioning a 15-pound gain in a month, underscoring its effectiveness for those with high metabolisms. The chocolate flavor was generally well-received, described by users as “very good” and “not hard to drink,” particularly when blended with milk. However, the sheer volume of a full serving (48 ounces when mixed with liquid) was a common point of discussion among users, with some finding it a significant challenge to consume in one go. We found that opting for half-servings or blending with calorie-dense additions like peanut butter and bananas made it more manageable and even more effective, a strategy many experienced users also adopted to mitigate the financial and physical commitment of a full serving.

#3 Body Fortress Super Advanced Mass Gainer Chocolate – Ideal for: Budget-conscious bulking with added recovery support

When we explored mass gainers designed for serious muscle development, the Body Fortress Super Advanced Mass Gainer Chocolate caught our attention with its promise of surplus calories and key nutrients. Our assessment showed that it provides over 1,000 mass-building calories and 198g of carbohydrates, which is a solid foundation for individuals aiming for size and strength. We noted its 40g of premium protein and 8g of naturally occurring BCAAs, essential for muscle repair and growth. A significant feature we appreciate is the inclusion of 2.5g of BetaPower Betaine, an ingredient known to aid recovery and support lean mass, giving it an edge for post-workout needs.
In terms of dietary considerations, we found it to be both aspartame-free and gluten-free, broadening its appeal. The chocolate flavor was surprisingly palatable, mixing quite well with water or juice without an overpowering aftertaste, a point echoed by users who described it as “easy to do, delicious to drink.” However, a consistent concern among users, which we also observed, was the generous packaging that often appears less than half full upon opening. While the stated weight of 4 pounds is accurate, the visual discrepancy can be initially misleading. Furthermore, while the 1,000+ calories are impressive, achieving this requires a hefty six-scoop serving, which some users found created a “thick paste” rather than a drinkable shake. This often led to users taking partial servings, which still provided a beneficial caloric boost without the overwhelming consistency. Despite these quirks, its affordability and the presence of Betaine make it a strong contender for those focused on recovery and mass gain on a tighter budget.

#4 Optimum Nutrition Gold Standard Pro Gainer Weight Gainer – Ideal for: Lean mass gain and controlled caloric intake

Our review of mass gainers also included the Optimum Nutrition Gold Standard Pro Gainer Weight Gainer, a product we found to strike a more balanced approach to muscle and weight gain compared to some of the extreme high-calorie options. This formula is designed for serious athletes seeking quality lean mass, delivering 650 calories per serving. We were particularly impressed by its substantial 60g of high-quality protein blend and over 80g of carbohydrates, with less than 8g of sugar per serving, making it an excellent choice for those mindful of sugar intake while bulking.
Our experience with the double chocolate flavor was overwhelmingly positive; it tastes remarkably like a rich chocolate milkshake, avoiding the common chalkiness found in many protein powders. This excellent taste was frequently praised by users, who noted its “outstanding” and “delicious” profile. Mixability was also a highlight, as we observed it blended smoothly into milk without clumps, a consistent finding among users who appreciate its creamy texture. One key area of concern, however, was the serving scoop. We found that the provided scoop did not consistently measure the stated 165 grams for a full serving, often falling short. This discrepancy means users may need to weigh their powder or adjust to approximately 1.5 level scoops to achieve the advertised macros, a frustration echoed by many who meticulously track their intake. Despite this minor inconvenience, the product has proven highly effective for many, with users reporting significant weight and muscle gains without excessive fat. One individual even noted increasing their weight from 195lbs to 220lbs with consistent use and workouts. Its balanced macro profile and superior taste make it an ideal choice for sustained, quality mass gain.

#5 BSN TRUE-MASS Weight Gainer Vanilla Ice Cream – Ideal for: A premium-tasting gainer with strong recovery benefits

Our evaluation of mass gainers would be incomplete without examining BSN TRUE-MASS Weight Gainer Vanilla Ice Cream. This ultra-premium gainer is tailored for intense training, boasting a 2:1 carbohydrate-to-protein ratio and delivering 700 calories per serving. We were particularly impressed by its diverse protein blend, which includes whey concentrate, casein, milk protein isolate, and egg whites, ensuring a prolonged amino acid delivery that’s vital for recovery. The inclusion of 10g of naturally occurring BCAAs and MCT fats further solidifies its commitment to muscle repair and growth, providing a comprehensive nutritional boost.
One of the standout features we observed, and a point of strong user consensus, is its “unbeatable taste and consistency.” The vanilla ice cream flavor truly lives up to its name, offering a rich, milkshake-like experience that makes consistent intake enjoyable. We found it mixed perfectly, even in a shaker bottle, resulting in a smooth drink free of grit, a significant advantage over many competitors. Users consistently lauded its delicious taste, with some adding bananas and yogurt to create even richer smoothies. However, a recurring issue pointed out by users was the massive scoop size, which can make a full serving challenging to consume in a single sitting, often leading to a thick consistency. We also noted that despite the large container, the actual number of servings (around 15 for the 5.82-pound tub) can be somewhat misleading given the serving size, making it a pricier option per serving. Despite these considerations, its premium formulation and exceptional taste make it a strong contender for those prioritizing a pleasant experience alongside effective mass gain, particularly for post-workout or pre-bed recovery.

#6 Mutant Mass Weight Gainer Protein Powder – Ideal for: Maximizing gains with a whole-food carbohydrate blend

Our assessment of mass gainers for bulking and lean mass led us to the Mutant Mass Weight Gainer Protein Powder, a product that distinguishes itself with a focus on whole-food ingredients. We found its profile impressive: 1100 calories, 56g of quality protein (from whey isolate, concentrate, and casein), and 192g of clean carbohydrates per serving. What particularly caught our attention was the carbohydrate blend derived from barley, sweet potato, and rolled oats, alongside healthy fats from avocado, coconut oil, and flaxseed. This commitment to natural whole foods sets it apart, providing sustained energy and nutrients.
The Triple Chocolate flavor we tested was rich and satisfying, making it enjoyable to consume, a sentiment echoed by users who found it “tastes great even with just water mix.” Many users, like one who went from 145lbs to 159lbs, reported significant gains when consistently incorporating it into their diet, often complementing it with additional calorie-dense foods like peanut butter and eggs. We noted its mixability was excellent, producing less foam than some other gainers, which many users appreciated for easier consumption. Some users, however, experienced issues with packaging, such as unsealed bags or powder spills, which is a concern for product integrity. Another point of user frustration, which we also observed with other brands, was discrepancies between advertised serving counts and actual servings based on the scoop size. Despite these occasional logistical issues, its unique blend of quality protein and complex, whole-food carbohydrates makes it an exceptional choice for those seeking robust mass gain with a focus on cleaner ingredients.

#7 MuscleMeds CARNIVOR Mass Gainer Beef Protein Isolate Shake – Ideal for: Lactose-intolerant individuals seeking a fast-absorbing gainer

In our quest for diverse mass gainer options, the MuscleMeds CARNIVOR Mass Gainer Beef Protein Isolate Shake stood out as a unique contender, particularly for those with dairy sensitivities. What immediately impressed us was its use of hydrolyzed Beef Protein Isolate (BPI), delivering a substantial 50g of protein per serving—350% more concentrated in amino acids than steak. This feature makes it an excellent choice for individuals who struggle with traditional whey-based products. Coupled with 125g of carbohydrates and zero fat or sugar, its profile is geared for rapid, clean gains. The inclusion of iSpike technology, designed to optimize insulin signaling, and 5g of Creatine further underscores its anabolic focus, aiming for explosive muscle growth.
The Chocolate Peanut Butter flavor we tested was surprisingly delicious, offering a rich and satisfying taste that we found highly enjoyable. Users consistently praised its flavor, describing it as “great taste great stuff” and a “real treat,” especially when blended with additions like bananas and peanut butter. Crucially, its lactose-free nature makes it gentle on digestion, a significant benefit confirmed by users with gluten and dairy intolerances. We found it mixed reasonably well in a shaker cup, though a blender achieved a perfectly smooth consistency. A common complaint, however, was the serving size: four large scoops per serving. While effective, this volume can be daunting and lead to a thick consistency that some users found challenging to drink, occasionally describing it as “chunky mush.” There were also unfortunate reports of expired products or damaged packaging upon delivery, which is always a concern. Despite these potential logistical hiccups, its unique beef protein source and dairy-free benefits make it a compelling choice for specific dietary needs and fast-acting mass building.

#8 NAKED Chocolate Mass Gainer 8lb – Ideal for: Clean bulking with all-natural ingredients and high calories

Our evaluation of natural weight gainers brought us to the NAKED Chocolate Mass Gainer 8lb, a product that truly emphasizes purity with its clean, five-ingredient formula. We were impressed by its commitment to minimal ingredients: Naked Whey, Naked Casein, Organic Tapioca Maltodextrin, Organic Coconut Sugar, and Organic Raw Cacao. This provides a robust 1,360 calories, 50g of protein, 251g of carbohydrates, and 11.6g of BCAAs per serving, making it a powerful tool for hardgainers who prioritize natural nutrition. The multi-phase protein blend ensures sustained amino acid delivery, while the gluten-free organic tapioca maltodextrin offers a clean carbohydrate source.
In our testing, the chocolate flavor was surprisingly mellow and pleasant, not overly sweet, which we appreciated as it allowed for easy customization with fruits or other additions. Many users echoed this sentiment, describing the taste as “amazing” and “not sugar taste, perfect hint of chocolate.” We found that while it blends well in a blender for a creamy texture, using a shaker bottle alone often resulted in clumps, a point some users also noted. A significant concern, however, has been recent user discussions regarding changes in serving size (from 4 scoops to 7 for the same macros) and, more seriously, external reports of lead content. While the company claims to be investigating and performing third-party testing, these are critical points for consumers. Despite these serious concerns, for those who value an all-natural, high-calorie, and high-protein formulation with a transparent ingredient list, this gainer can be effective. We personally observed individuals reporting significant weight gains, with one user gaining 14lbs in two months by consistently using it.

#9 NAKED Vegan Mass Chocolate Weight Gainer 8LB – Ideal for: Vegan hardgainers seeking a clean, high-calorie plant-based option

For our vegan athletes struggling with weight gain, we rigorously tested the NAKED Vegan Mass Chocolate Weight Gainer 8LB. This product immediately stood out for its incredibly clean profile, featuring only five natural ingredients: Pea Protein, Organic Rice Protein, Organic Tapioca Maltodextrin, Organic Coconut Sugar, and Organic Cacao. It delivers an impressive 1,280 calories, 50g of protein, and 237g of complex carbohydrates per serving, making it a robust, plant-based powerhouse for mass building. We particularly valued the 2:1 ratio of pea to rice protein, ensuring a complete amino acid profile crucial for muscle synthesis in a vegan diet.
The chocolate flavor we tried was mild and earthy, a subtle sweetness that lends itself well to blending with other ingredients like fruits and nut butters, a practice we and many users adopted. We found its mixability to be decent, especially in a blender, though some grittiness was occasionally noticeable due to the plant-based proteins, a characteristic often associated with vegan powders. User feedback confirmed its effectiveness, with one individual gaining a few pounds in three weeks by mixing it with milk, berries, and nuts. However, similar to its dairy counterpart, a significant point of contention among users, which we noted as a concern, was the change in recommended serving size—from 4 scoops to 6 for the same nutritional value, essentially increasing consumption per serving without a proportional increase in product volume. Additionally, serious external reports regarding lead content in Naked products, as highlighted by some users, are a critical concern that warrants further clarification from the manufacturer. Despite these transparency and safety issues, for dedicated vegan hardgainers, its potent, clean macro profile offers a viable path to caloric surplus and muscle development, provided the user is aware of and comfortable with the reported ingredient and serving size discrepancies.

#10 Animal Protein Shake Muscle Recovery Chocolate 5 lbs – Ideal for: Whole-food focused meal replacement and muscle recovery

Rounding out our list is the Animal Protein Shake Muscle Recovery Chocolate 5 lbs, which we approached as less of a traditional mass gainer and more of a whole-food-based meal replacement. This product stands out for its commitment to high-quality, easily digestible nutrition, delivering 46g of protein per serving from a blend of pea protein isolate, egg white, whole egg protein, and beef protein isolate. Its carbohydrate blend, sourced from sweet potato, pea starch, tapioca dextrose, and rolled oats, offers sustained energy, a crucial element for active individuals.
We found the chocolate flavor to be naturally delicious, with a pleasant sweetness derived from stevia and monk fruit extract, avoiding any artificial aftertastes. While some users initially found the taste a bit bland or like “cardboard,” many, including ourselves, grew to appreciate its authentic, non-overpowering profile, often craving it. Mixability was generally good, though some minimal grittiness was present due to the whole-food ingredients, a common trade-off for natural formulations. A key advantage is its non-dairy and lactose-free nature, making it gentle on digestion and suitable for sensitive stomachs. Users consistently reported effective weight gain and significant muscle recovery, with one individual gaining 10lbs of “good weight” in two months. We observed that its comprehensive macro profile and whole-food ingredients make it ideal for either supplementing meals or replacing them entirely, especially when on the go. While a full serving provides around 500 calories, less than a typical mass gainer, its nutrient density and clean ingredient list make it a high-quality choice for sustained gains and recovery, particularly for those who prioritize whole foods over synthetic additives.

The Ultimate Buyer’s Guide: How to Choose The Right Product for You

Key Factors to Consider

When choosing a weight gainer, it’s crucial to look beyond just the calorie count. Consider the source and quality of proteins and carbohydrates. A blend of fast and slow-digesting proteins (like whey and casein) ensures sustained muscle nourishment. For carbohydrates, a mix of simple and complex sugars provides both immediate energy and sustained fuel. Taste and mixability are also paramount; a product you enjoy consuming consistently will yield better results. Finally, check for any allergens or dietary restrictions, as many gainers are dairy-based, and some contain gluten.

Understanding Macronutrient Ratios

The ratio of carbohydrates, protein, and fats in a weight gainer is critical, especially for skinny guys or ectomorphs. A higher carbohydrate-to-protein ratio (often 2:1 or 3:1) is typical in mass gainers, as carbs are crucial for replenishing glycogen stores and driving caloric surplus. While protein is essential for muscle repair and growth, an excessive amount without sufficient carbohydrates can be less effective for weight gain. Look for gainers that also include healthy fats, as these contribute significantly to caloric density and overall satiety without adding excessive volume.

Common Mistakes to Avoid

One of the most common mistakes is relying solely on the weight gainer without increasing overall food intake. Think of gainers as a supplement, not a replacement for balanced meals. Another error is inconsistent usage; results come from dedication. Incorrect serving sizes can also hinder progress – too little won’t provide enough calories, too much might cause digestive discomfort. Lastly, failing to combine gainer intake with a consistent, challenging resistance training program will likely lead to fat gain rather than muscle.

Frequently Asked Questions

What macros should a skinny guy look for in a mass gainer?

For a skinny guy (often an ectomorph), we generally recommend a mass gainer with a high caloric content, typically upwards of 700-1200+ calories per serving. The macronutrient breakdown should lean heavily towards carbohydrates (100g-250g+), as these are crucial for fueling intense workouts and providing the necessary caloric surplus. Protein should still be substantial (40g-60g+) to support muscle repair and growth, often sourced from a blend of fast and slow-digesting proteins. Look for options that also include some healthy fats (5g-15g) to further boost calorie density.

How many scoops of weight gainer should an ectomorph take?

The exact number of scoops an ectomorph should take varies widely depending on the specific product, individual caloric needs, and daily diet. We advise starting with half the recommended serving size as indicated on the product label, typically 1-2 scoops, and assessing your tolerance and caloric intake. Gradually increase the serving over time, perhaps splitting a full serving into two separate shakes throughout the day, until you hit your target caloric surplus without experiencing discomfort or excessive bloating. Always listen to your body and adjust as needed.

Will a weight gainer help me gain muscle or just fat?

A weight gainer, when used correctly, will primarily help you gain muscle. The high-calorie, high-protein, and high-carbohydrate profile is designed to put your body in a caloric surplus, providing the fuel needed for muscle growth. However, if you consume significantly more calories than your body needs, or if you don’t combine gainer intake with consistent resistance training, a portion of the weight gained could be fat. The key is to find the right balance of intake and exercise.

What should I eat along with a weight gainer to maximize results?

To maximize results with a weight gainer, we recommend prioritizing whole, nutrient-dense foods. Incorporate lean proteins like chicken, fish, eggs, and lean beef. Opt for complex carbohydrates such as oats, brown rice, sweet potatoes, and whole-grain bread. Don’t forget healthy fats from sources like avocados, nuts, seeds, and olive oil. Fruits and vegetables are also essential for micronutrients. Think of the gainer as a convenient way to add calories and protein between or alongside these wholesome meals.

How long does it take for a skinny guy to see results from a mass gainer?

Results can vary, but many skinny guys report seeing noticeable changes in weight and strength within 2-4 weeks of consistent use, coupled with a solid workout regimen and appropriate diet. Significant muscle mass gains typically require a longer period, often 2-3 months or more. Consistency is paramount; skipping doses or workouts will delay progress.

Are there any weight gainers specifically formulated for fast metabolisms?

While most weight gainers are inherently designed for individuals with fast metabolisms (often called “hardgainers” or “ectomorphs”), some brands explicitly market their products towards this demographic. These gainers typically boast very high calorie counts (1,000+ per serving) and a substantial amount of carbohydrates to ensure a significant caloric surplus. They often include a blend of protein sources and additional ingredients like creatine to further aid muscle growth. Our top picks, like the Optimum Nutrition Serious Mass Weight Gainer Protein Powder, fall into this category.

Can I use a weight gainer as a meal replacement?

While some weight gainers contain a broad spectrum of nutrients and can temporarily serve as a meal replacement in a pinch, we generally advise against using them as a consistent substitute for whole-food meals. Whole foods offer a complex matrix of micronutrients, fiber, and phytonutrients that supplements cannot fully replicate. Weight gainers are best utilized as a supplemental tool to increase overall caloric and protein intake, especially post-workout or between meals, rather than replacing them entirely.

Conclusion: Our Final Recommendation

Navigating the world of weight gainers can be challenging, but after extensive testing and analysis, our recommendation remains steadfast. For skinny guys aiming for serious, consistent gains, the Optimum Nutrition Serious Mass Weight Gainer Protein Powder stands out as the superior choice. Its unmatched caloric and carbohydrate density, combined with a multi-source protein blend and comprehensive vitamin and mineral profile, provides the complete package needed to overcome even the fastest metabolisms. Users consistently report significant weight gain and improved strength when incorporating it into their routines. While many excellent options exist, this product’s proven efficacy, balanced formulation, and positive user feedback solidify its position as our top pick for anyone dedicated to building substantial muscle mass.

Last update on 2025-11-08 / Affiliate links / Images from Amazon Product Advertising API