Weight Gain Protein Powder: Our Experts' Pick for Big Gains

Gaining healthy weight and muscle isn’t always easy, especially for people with a fast metabolism. That’s where weight-gain protein powders can help.

These supplements give your body the extra calories, protein, and nutrients it needs to build size and strength. One popular option is Myogenix Critical Mass, a high-calorie protein powder designed for serious muscle growth.

In this article, we’ll take a closer look at Myogenix Critical Mass, what’s inside it, how it works, and why it’s a top choice for those looking to bulk up.

[Related] Best Weight Gainer for Men: Complete Guide for Hardgainers

Quick Summary

• What Are Weight Gain Protein Powders? High-calorie supplements with protein, carbs, and fats to help bulk up.
• Who Needs Them? Best for hardgainers, athletes, or those struggling to eat enough calories.
• Key Ingredients to Look For: Whey/casein protein, complex carbs, healthy fats, and added vitamins.
• Benefits: These supplements provide extra calories, protein, carbs, and nutrients for muscle growth and healthy mass.
• Myogenix Critical Mass – A Top Choice? Review of its formula, taste, benefits, and effectiveness.
• Critical Mass Benefits: It contains protein, carbs, creatine, and healthy fats to support muscle growth.

Benefits of Weight Gain Protein Powder

• Easy Calorie Boost: The most straightforward benefit! If you're trying to gain weight, you need to eat more calories than you burn. Weight gain powders are packed with calories, making it much easier to hit those higher numbers without feeling overly full from eating mountains of food.
• Muscle Growth Support: These powders provide a good amount of protein, which is crucial for building and repairing muscle tissue. When you work out, you create tiny tears in your muscles, and protein helps to fix and grow them back stronger and bigger.
• Convenient & Quick: Mixing a shake is super fast. This is perfect for busy people or right after a workout when you need nutrients quickly but don't have time to cook a full meal. Just scoop, shake, and drink!
• Helps "Hardgainers": Some people have a very fast metabolism or a smaller appetite, making it hard to gain weight. Weight gain powders are a simple solution to get the extra calories and nutrients these "hardgainers" need to finally see progress.
• Better Recovery: The carbohydrates in most weight gainers help refill your energy stores (glycogen) after tough workouts. This, combined with protein for muscle repair, speeds up your recovery by providing amino acids so you're ready for your next session.
• Nutrient Density: Beyond just calories, many weight gain powders also include other helpful nutrients like vitamins, minerals, and sometimes creatine, which can further support muscle growth and overall health

The Best Weight Gain Protein Powder for Hard Gainers

Myogenix Critical Mass is a lean mass gainer protein powder designed to help individuals gain weight and build muscle efficiently. It stands out by providing a substantial 60 grams of protein per serving, sourced from high-quality Whey Protein Isolates and Milk Protein Isolates.

This combination ensures fast and sustained protein absorption, which supports muscle repair and growth after workouts. Unlike many weight gain powders that rely heavily on cheap carbohydrates, Critical Mass uses a low glycemic, low lactose formula.

This makes it easier to digest and reduces common issues like bloating and gas, which are often caused by lactose intolerance or poor-quality carbs. The carbohydrate sources include specialized blends like WaxyMASS™ waxy maize, which provides a steady energy release without causing a sharp insulin spike.

Each serving delivers over 700 calories, making it ideal for "hard gainers" — people who struggle to consume enough calories through regular meals alone. The formula also includes 5 grams of creatine and glutamine, which are well-known for enhancing muscle strength, endurance, and recovery.

This protein supplement is available in multiple flavors and is designed to mix smoothly with water or milk, offering a convenient and tasty way to increase daily calorie and protein intake. Its balanced macronutrient profile — combining protein, carbs, and fats — supports lean muscle gain without excessive fat accumulation.

Key Ingredients of Myogenix Critical Mass

1. Critical Mass Carbs™

• Maltodextrin: A fast-digesting carbohydrate that provides quick energy, ideal post-workout or for calorie surplus.
• Oat Bran: Adds fiber, helps with digestion, and offers slow-release carbohydrates for sustained energy.
• Yam: A natural source of complex carbohydrates, further supporting steady energy levels and digestive health.

2. Critical Mass Protein Blend™

• Whey Protein Isolate: Rapidly absorbed, high in essential amino acids for muscle repair and growth.
• Milk Protein Isolate: Contains both casein and whey, offering a mix of fast and slow-digesting proteins.
• Ultra Filtered Whey Protein Concentrate: Provides additional protein and bioactive compounds that support muscle health.

3. Cane Juice Solids

• A natural sweetener and carbohydrate source, contributing to the overall calorie content.

4. Mass Fat™

• Creamer: Adds creaminess and enhances taste, and contributes to the fat content.
• MCT Powder (Medium Chain Triglycerides): A type of fat that is quickly absorbed and used for energy, less likely to be stored as body fat.

5. Amino Stack™ (5g per serving)

• Micronized Creatine Monohydrate: Enhances muscle strength, power, and performance.
• MagnaPower™ Creatine: A patented form of creatine, potentially improving absorption and effectiveness.
• L-Glutamine: Supports muscle recovery, immune function, and gut health.

6. Other Ingredients

• Natural & Artificial Flavor: For taste enhancement.
• Sea Salt: Adds flavor and provides electrolytes.
• Sucralose: A calorie-free artificial sweetener.
• Xanthan Gum: Used as a thickener and stabilizer for a smooth texture.

7. Allergen Statement

• Contains Milk: Not suitable for those with milk allergies.

Benefits of Myogenix Critical Mass

• High-Calorie Support: Each serving provides 700 calories, making it easier to achieve a calorie surplus for weight gain.
• Lean Muscle Mass: Delivers 60g of high-quality protein for muscle repair and building.
• Energy and Recovery: The carb blend and creatine support workout performance and faster recovery.
• Digestive Support: Oat bran and yam add fiber, helping with digestion and nutrient absorption.
• Balanced Carb Sources: Combines fast-acting (Maltodextrin, Cane Juice) and slower-digesting (Oat Bran, Yam) carbs for immediate energy and sustained glycogen replenishment.
• Performance & Recovery Aids: Includes 5g of Creatine (Monohydrate, MagnaPower®) and L-Glutamine to boost strength, power, and muscle recovery.
• Efficient Fat Source: Contains MCT powder, providing readily available energy from fats.

Pros and Cons of Myogenix Critical Mass

Pros:

• Very High Protein: Excellent 60g protein per serving.
• Added Performance Ingredients: Includes Creatine and Glutamine, reducing the need for separate supplements.
• Best Protein to Carbohydrate Ratio: contains an ideal ratio of 60g protein to 90g carbohydrates
• Diverse Carbohydrate Matrix: Good blend of fast and sustained carbs.
• MCTs for Better Fats: Utilizes quickly absorbed MCTs.
• Reputable Brand: Comes from a known manufacturer.
• Lower Lactose Risk: Uses isolates, potentially better for those with mild lactose sensitivity (contains milk).
• Mixes well, tastes good according to some user feedback.

Cons

• High Calorie Density May Not Suit Everyone: Those with slower metabolisms or less active lifestyles might gain unwanted fat if not carefully managed.
• Artificial Ingredients: Contains artificial flavors and sweeteners.
• Not Suitable for Severe Lactose Intolerance: Though low in lactose, it may still cause discomfort for highly sensitive individuals.
• Added Sugars: Contains 14g of added sugars, which might be high for some.
• Price Point: May be more expensive than basic mass gainers due to added performance ingredients.

Flavor Profile: AfterShock Critical Mass by Myogenix

• Banana Milkshake
• Chocolate Milkshake
• Cookies & Cream Milkshake
• Strawberry Milkshake
• Vanilla Milkshake

How to Use Myogenix Critical Mass

Mix 1 serving (2 scoops or 181g) of Myogenix Critical Mass with 16 ounces (about 500 ml) of water. You can drink this shake once or several times a day, depending on your calorie and protein needs.

To increase calories and add extra nutrients, try blending this dietary supplement with ingredients like fresh fruit, peanut butter, whole milk, cooked oatmeal, or cream.

Customer Reviews: AfterShock Critical Mass by Myogenix

Outstanding, helps gain some mass back without any fat

“Even at age 54, this product and hard work helped me gain back 10 lbs of muscle, without adding any fat. Also tastes great and mixes easily. Highly recommended.”

-Tim

my phenix after shock

“This product I love it does and what its made for!! Good high quality protein use after each workout , and I feel good. It tastes great too!! I'd recommend this for anyone looking for a tasty and good quality protein.”

-mannie

Highly recommended

“Cookies and Cream, hands down, best tasting protein I've ever had. I bet I have tried at least 20 different kinds. It's the best. Also, some weight gainers upset my stomach, but this one doesn't. It contains chelated creatine (bonds to magnesium) rather than monohydrate (bonds with water). It is argued that this leads to better absorption and less bloating. Now I don't know if that's true, but I do know that this product didn't make my stomach hurt. I WILL take this again.”

-Big L.

How to Choose the Best Weight Gain Protein Powder

• Your Calorie Needs: First, consider how many extra calories you need each day. Some gainers have 500 calories per serving, while others have over 1000. Match the powder's calories to your personal goals.
• Check the Protein Source: Whey protein is great for quick muscle recovery, while casein digests slowly and works well before bedtime. Plant-based proteins like pea or rice are good if you avoid dairy.
• Look at the Protein Amount: Aim for at least 30–60 grams of protein per serving to support muscle growth.
• Carbohydrate Sources: Check where the carbs come from. A good gainer often has a mix of fast-acting carbs (like maltodextrin) for quick energy and slower-digesting carbs (like oats or yams) for sustained energy and less sugar spike.
• Added Ingredients: Some gainers include extras like creatine, glutamine, or BCAAs. If these align with your fitness goals, it can be a bonus, but they might also increase the cost.
• Avoid Unnecessary Additives: Choose powders with clean ingredients, without too much sugar, artificial sweeteners, or fillers.
• Consider Digestibility: If you are lactose intolerant or have a sensitive stomach, pick lactose-free or easily digestible formulas.
• Taste and Mixability: Since you’ll be drinking these often, pick a flavor you like and a powder that mixes well.
• Read Reviews and Certifications: Look for products tested for quality and safety, and see what other users say.

Who Should Use Weight Gain Protein Powders?

"Hardgainers" (People Who Struggle to Gain Weight)

This is the most common group. If you have a naturally fast metabolism or find it really hard to eat enough food to gain weight, mass gainers offer a convenient way to get extra calories and nutrients without feeling overly full.

Athletes and Bodybuilders with High Calorie Needs

If you're training intensely (like for bodybuilding, powerlifting, or endurance sports), your body burns a lot of calories. Weight gainers help meet these high energy demands, supporting recovery and muscle growth.

People with a Small Appetite

Sometimes, it's just hard to eat large meals frequently. A calorie-dense shake can provide a significant number of calories and nutrients in an easy-to-consume form, bridging the gap between meals.

Individuals Aiming for Rapid Muscle Mass

When the goal is to quickly increase muscle size and strength, creating a consistent calorie surplus is key. Weight gainers make it simpler to maintain this surplus day after day.

During Recovery or Bulking Phases

For those coming back from an injury, or bodybuilders in a dedicated "bulking" phase, these powders can provide the extra fuel needed for repair and growth when whole food intake alone isn't enough.

Busy Individuals

If you find it hard to eat enough meals during the day, weight gain protein powders offer a quick and easy way to add calories and protein without cooking.

Who Should Avoid Weight Gain Protein Powders?

People Trying to Lose Weight or Maintain Weight

If your goal is to shed pounds or stay at your current weight, adding hundreds of extra calories from a mass gainer will work against you. These supplements are designed for gaining weight.

Individuals Who Easily Gain Weight

If you already find it easy to gain weight, or tend to gain fat easily, adding a high-calorie supplement could lead to unwanted fat gain rather than lean muscle. Your regular diet might already be enough.

Those Who Get Enough Calories from Food

If your current diet is already providing all the calories and nutrients you need to reach your goals, adding a gainer is just extra and unnecessary calories.

People with Certain Health Conditions

If you have conditions like diabetes, kidney problems, or severe digestive issues, the high sugar, protein, or overall load of a mass gainer could be problematic. Always consult a doctor or registered dietitian if you have health concerns.

Those Not Exercising Regularly

Consuming high-calorie weight gain powders without enough physical activity can lead to unwanted fat gain instead of muscle.

FAQs: Weight Gain Protein Powder

Q: What is the difference between weight gainers and regular protein powders?

A: Weight gainers contain more calories, carbs, and fats to help you gain size and weight. Regular protein powders mostly focus on protein and are used for muscle recovery without extra calories.

Q: Can I use weight gain protein powder if I am lactose intolerant?

A: Some powders contain lactose, which can cause discomfort. Look for lactose-free or low-lactose options, or plant-based powders if you are sensitive to dairy.

Q: Will weight gain protein powder make me fat?

A: If used correctly with exercise and a balanced diet, weight gain powders help build muscle, not just fat. However, consuming too many calories without activity can lead to fat gain.

Q: Can I replace meals with it?

A: Occasionally, but whole foods are healthier. Use it as a supplement, not a meal replacement.

Q: Can Critical Mass help build muscle mass faster?

A: Yes! With 60g of protein, 700+ calories, and added creatine, it fuels lean muscle growth when paired with strength training. Ideal for hardgainers or bulking phases.

Final Thoughts

Weight gain protein powders help fill the calorie and protein gaps for muscle growth. They are made for people who find it hard to gain size through food alone.

Myogenix Critical Mass is one such option. Myogenix Critical Mass delivers serious calories and protein for hardgainers. The 700-calorie servings, 60g protein, and smart carb-fat mix make bulking simpler.

It includes creatine and glutamine, saving extra supplement costs. Its low lactose content makes it easier to digest than many other mass gainers.

While it contains some added sugars, the overall nutrient profile is designed to help increase calorie intake effectively.

Best for athletes or skinny guys needing mass fast. Not ideal for cutting or casual users. Solid choice if calories and muscle growth are the goal.

References

Jäger, R., Kerksick, C. M., Campbell, B. I., Cribb, P. J., Wells, S. D., Skwiat, T. M., ... & Antonio, J. (2017). International Society of Sports Nutrition position stand: protein and exercise. Journal of the International Society of Sports Nutrition, 14(1), 20.

Morton, R. W., Murphy, K. T., McKellar, S. R., Schoenfeld, B. J., Henselmans, M., Helms, E., ... & Phillips, S. M. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training–induced gains in muscle mass and strength in healthy adults. British Journal of Sports Medicine, 52(6), 376–384.

Thomas, D. T., Erdman, K. A., & Burke, L. M. (2016). Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and athletic performance. Journal of the Academy of Nutrition and Dietetics, 116(3), 501–528.