Supplements for weight gain offer limited variety to choose from. This limited selection actually benefits consumers since there are fewer products to evaluate. Weight gain should primarily derive from muscle development. While “hard gainers” typically want to see any weight increase on the scale, minimizing fat accumulation remains important.
Best Weight Gain Supplements
Below are the top weight gain supplements to consider for each product category. Look for both quality and affordability when selecting supplements. These require long-term use since weight gain takes longer for individuals with high metabolisms.
CrazyNutrition Mass Gainer
CrazyNutrition’s Mass Gainer helps you gain weight using premium ingredients.
Each serving contains 488 calories, including 40 grams of protein, 55 grams of clean carbohydrates, and 10 grams of healthy MCT oil fat.
While 488 calories sits on the lower end for mass gainers, CrazyNutrition’s supplement prioritizes high-quality ingredients over simply boosting caloric intake with subpar components.
This mass gainer includes ingredients that enhance absorption, reduce blood sugar spikes, and minimize digestive issues.

Naked Mass
Naked Nutrition specializes in simple, filler-free formulations.
Naked Mass is a straightforward mass gainer designed to boost caloric intake with clean ingredients.
Each serving delivers 1,250 calories from 50 grams of protein, 252 grams of carbohydrates, and 2.5 grams of fat.
At 1,250 calories per serving, this mass gainer suits individuals who want to significantly increase caloric intake (you can use fewer scoops if you prefer reducing calories per serving).

Transparent Labs Mass Gainer
Transparent Labs’ Mass Gainer is a high-protein option that falls between our other two recommendations.
Delivering 790 calories per serving, this mass gainer contains 114 grams of carbohydrates, 53 grams of protein and 14 grams of fat.
This represents the highest protein option on our list, making it perfect for people seeking to build muscle or increase their protein intake.

Different Types Of Weight Gain Supplements
As mentioned, most weight gain supplements focus on muscle development. However, one category concentrates exclusively on weight gain: mass gainer proteins. These high-calorie weight gain products contain all three macros—carbs, protein, and fats. Typically, they provide 800-1,400 calories per serving.
Additional supplements worth considering include:
- Whey Protein
- Casein Protein
- Creatine
- Beta Alanine
- BCAA/EAA
While mass gainers are protein supplements, they typically provide only 8-10 full servings per container. This makes long-term use expensive, which is why whey and casein proteins offer cost-effective alternatives.

Whey Protein
Whey derives from cow’s milk and comprises 80% of milk’s protein content. Through a heated filtering process, whey separates from the rest of the milk in powdered form. Whey digests quickly and absorbs rapidly for use. Many whey products are available on the market, such as Spartan Whey and Ghost Whey Protein.
This protein type comes as concentrate, isolate, or peptides. Usually, you’ll find a blend of all three, or concentrate mixed with isolate. This combination ensures quality while maintaining affordability.
The key difference is that concentrate represents the initial whey filtering process, which retains some dextrose and fats. These extra calories aren’t necessarily harmful for weight gain. Isolate undergoes further purification to derive nearly all calories from protein.
Peptides are added to protein products because they consist of longer amino acid chains, ready for quick absorption after consumption.
Casein Protein
Casein is an excellent protein supplement for weight gain and should complement whey in your supplement stack. This protein represents the other 20% found in milk that digests and absorbs slowly. The strategy behind using casein involves consuming it as a bedtime snack to provide steady protein release while your body rests.
Your metabolism works hard to recover and repair damaged muscles after training, leading to muscle growth. Casein supports this process by ensuring protein availability during muscle synthesis.
Clean Carbohydrates
One of the most effective methods for rapid weight gain involves consuming clean carbohydrates. Most weight gain products contain high amounts of carbohydrates to provide energy and increase caloric intake.
The primary distinction between protein powder and mass gainers is the added carbohydrates. While protein shakes are typically low-calorie supplements that build muscle, mass gainers contain substantial carbohydrates to boost overall caloric intake while providing high protein levels.
Creatine
Creatine ranks among the most extensively researched ingredients with proven safety and effectiveness. This compound occurs naturally within muscle cells and can be obtained through consuming red meat.
However, obtaining daily recommended amounts through red meat alone is nearly impossible. Creatine supplements make it convenient to meet these requirements with one or two daily servings.
Creatine has demonstrated improvements in strength, power, and muscular endurance. This leads to lean muscle production that assists weight gain through exercise. These products are affordable for long-term use, and studies show cycling off is unnecessary unless you choose to do so.
You should consume 5-8 grams of creatine daily for your muscles to store for the next training session.
Beta Alanine
Typically found only in pre-workout supplements, this amino acid is actually effective when consumed daily for at least 6-8 weeks at 4-6 grams. You don’t need to consume the entire amount at once. People who consume over 2g in one serving experience skin tingles that cause temporary itchiness.
This is completely safe, and the tingles pose no concern. Studies demonstrate that beta alanine supports muscle power output and endurance, making training more effective for weight gain through muscle development.
BCAA/EAA
BCAA stands for branched chain amino acids, while EAA represents essential amino acids. BCAAs comprise 3 of the 9 essential amino acids, so if you see a product with EAA, it contains all 9 together.
Protein supplements must contain all EAAs to qualify as complete protein products, which is the only way your body can utilize them for muscle repair and growth. EAA and BCAA have shown to reduce muscle fatigue and soreness, helping prepare for subsequent training sessions.
Who Needs Weight Gain Supplements?
Anyone seeking to gain muscle mass or add weight due to high metabolism should consider these products. As mentioned, you shouldn’t desire fat as your primary weight gain source unless medically necessary.
Excessive weight gain through fat and water retention can create heart, blood pressure, and various other health problems. Healthy weight gain through muscle development provides sustainable results.
Results progress more slowly than many prefer, but weight fluctuates, and the scale doesn’t always reflect progress. Muscle development provides tangible proof of advancement and ensures the weight gained will persist.








