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Mass Gainer XL

Mass Gainer XL

$99.99 USD
$99.99 USD

Eating enough to grow is half the battle. Mass Gainer XL gives you the calories, protein, and clean carbohydrates to fuel serious size, all in one easy shake.

The product is currently sold out. Click the “Notify Me When Available” button below to be notified when it’s back in stock.

The product is currently sold out. Click the “Notify Me When Available” button below to be notified when it’s back in stock.

The product is currently sold out. Click the “Notify Me When Available” button below to be notified when it’s back in stock.

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NUTRABIO QUALITY GUARANTEE

NUTRABIO QUALITY GUARANTEE

Made in the USA • Third-Party Tested • Fully Transparent Labels • Fully Dosed Formulas

Eating enough to grow is half the battle. Mass Gainer XL gives you the calories, protein, and clean carbohydrates to fuel serious size, all in one easy shake.

Description

How To Use

Key Ingredients

Dietary Restrictions

Delivery & Returns

SKU: 25522
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Quality Mass, Not Empty Calories

Anyone can pile on cheap sugar and call it a gainer. Mass Gainer XL is built differently. A 4:1 carbohydrate to protein ratio delivers the fuel your body needs to grow, with 50g of complete protein from a dual whey and casein blend for both fast and sustained delivery. Coconut oil adds calorie dense energy, and a multi enzyme complex is included to help your body break down and put every serving to use.

1,140
Calories
50g
Complete Protein
216g
Carbohydrates
4:1
Ratio

The Science-Backed Edge

Every ingredient is chosen with purpose and backed by science to deliver meaningful results. Whether it’s wellness or performance, each formula is fully dosed and built with innovation to help your body function at its highest potential.
Three packages of NutraBio Mass Gainer XL in different flavors on a gym floor.

Live Without Compromise

We are dedicated to helping you achieve real results by ensuring every product is made with the highest-quality ingredients and uncompromising standards. Our commitment to excellence is built to help you reach your potential and live without compromise.
  • Build Lean Muscle Mass

    Build Lean Muscle Mass

    50g of complete protein from a whey and casein blend gives your muscles the raw material to grow, paired with the calories and carbohydrates that make that growth possible.‡

  • Recover and Rebuild After Training

    Recover and Rebuild After Training

    Hard sessions break your muscles down. The protein and carbohydrate balance in every serving helps refuel and repair so you come back ready to train again.‡

  • Calories Your Body Can Actually Digest

    Calories Your Body Can Actually Digest

    A built in multi enzyme complex helps break down the protein, carbohydrates, and fats in each serving, so a big calorie load goes down easier and gets put to use instead of sitting heavy.‡

  • Clean Energy From Quality Fats

    Clean Energy From Quality Fats

    Coconut oil adds calorie dense fuel that supports steady energy, giving you quality calories rather than empty filler.‡

  • Add Size When Food Alone Falls Short

    Add Size When Food Alone Falls Short

    When you cannot eat enough to grow, 1,140 quality calories in one shake closes the gap and helps you put on real, usable size.‡

  • Fast and Sustained Protein Delivery

    Fast and Sustained Protein Delivery

    Whey concentrate digests quickly while micellar casein releases slowly, feeding your muscles now and over the hours that follow.‡
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Built to Digest, Built to Grow

Calories You Can Actually Stomach

Most gainers sit like a brick. A built in multi enzyme complex helps break down the carbohydrates, protein, and fats in every serving, so a big calorie load goes down easier and your body puts it to work instead of fighting it.

A Dual Protein Matrix

Fast digesting whey concentrate and slower micellar casein work together to deliver 50g of complete protein now and over the hours that follow, supporting muscle growth and recovery around the clock.

Quality Calories, Not Empty Filler

A 4:1 carbohydrate to protein ratio with calorie dense coconut oil delivers real fuel for size, not just cheap sugar. Every gram is built to support growth you can actually use.

Overall rating: 4.5 / 5 from 2 reviews.

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Review highlights

Reviews

Great products mix well. Great

"Great products mix well. Great taste. made it easier to hit my calorie intake. Wish it could be on the monthly shipping was not able to add it other than that great."

— Dekon F. (5/5)

Chocolate

"Mass gainer xl hat off to you guys and gals at nutrabio , you make superior products, from protein to the mas gainer xl I'm taking it's the chocolate, I'm gaining weight finally 😁 something that works! I really appreciate everything that you put into this product in particular, it has quality in every ingredient, and it's really working! For someone that's been 135 pounds since highschool, eating full meals has always been challenging, and you get burnt out quickly, with this product! It's easy ,right to the point. Blends well, and on top of that it's superior ingredients no fillers no bs, good carbs, and great doses, I can't believe it works! Thank you all at nutrabio for your dedication and hard work it's greatly appreciated, I will always buy your products now, only reason I didn't put 5 stars is taste it's very good , but I think it could be better. keep up the amazing work!!"

— David (4/5)

Q&A

Frequently Asked Questions

Who should use NutraBio MASS GAINER XL?

MASS GAINER XL is perfect for both men and women who are looking to increase lean muscle mass, gain healthy weight, and support muscle recovery — especially hardgainers, athletes, or anyone with a high-calorie requirement.

When is the best time to take this product?

For optimal results, take one serving post-workout to support muscle recovery and growth. You can also take it between meals or as a meal replacement to help meet your daily calorie and protein needs.

Will this mass gainer make me gain body fat?

NutraBio MASS GAINER XL is formulated with clean calories and a balanced macronutrient profile to support lean muscle growth — not fat gain. As long as you’re training consistently and managing your total daily calorie intake, it can help build size the right way.

What makes this product different from other weight gainers?

MASS GAINER XL utilizes a high-quality 4:1 ratio of carbs to protein with zero fillers or low-grade ingredients. This premium weight gainer features fast and slow-digesting proteins, clean carb sources, patented digestive enzymes (DigeZyme®), and electrolytes — delivering performance nutrition without the junk.

Can women take MASS GAINER XL?

Yes, absolutely. MASS GAINER XL is safe and effective for both men and women who want to increase muscle size, strength, and recover better from training sessions. Women can use the full serving size (4 scoops) or reduce it to a half-serving (2 scoops) if that better fits their daily nutritional requirements.

Does this mass gainer contain any fillers or unnecessary ingredients?

No. NutraBio is committed to full label transparency and clean formulations — there are no proprietary blends, hidden or unnecessary ingredients, junk, artificial flavors, or artificial fillers in MASS GAINER XL.

How many scoops are in one serving of NutraBio MASS GAINER XL?

One full serving of MASS GAINER XL is 4 scoops, delivering over 1,100 calories, 50g of protein, and over 200g of clean carbs to support serious gains.

Is it safe to use a weight gainer daily?

Yes. MASS GAINER XL is designed for daily use, depending on your individual calorie and macronutrient goals. It can be taken on training and rest days to support consistent muscle growth and proper muscle recovery.