SKU: 98641535337

NutraBio Extreme Mass

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Description

NutraBio Extreme MassUltra premium mass gainer for extreme muscle growth and recovery. 650 calories, 53g protein, 100g carbs, and 6g fat in a delicious and filling shake Clean profile containing 12g BCAAs to support muscle growth Helps to more easily achieve your daily caloric needs without the added junk Improves muscle recovery following intense training sessions Minimizes muscle tissue breakdown to preserve your hard earned mass 650 CALORIE EXTREME MASS GAINER PROTEIN

Ultra-premium mass gainer for extreme muscle growth and recovery.

  • 650 calories, 53g protein, 100g carbs, and 6g fat in a delicious and filling shake
  • Clean profile containing 12g BCAAs to support muscle growth
  • Helps to more easily achieve your daily caloric needs without the added junk
  • Improves muscle recovery following intense training sessions
  • Minimizes muscle tissue breakdown to preserve your hard-earned mass

650 CALORIE EXTREME MASS GAINER PROTEIN

There are mass gainers, and then there’s NutraBio Extreme Mass. What sets this mass gainer apart from the competition is its clean formula that provides you with everything you need and nothing that you don’t — helping you add the quality size you want during your bulk without the additional body fat.

NutraBio Extreme Mass gainer uses two premium protein sources to help you reach your daily intake — whey protein concentrate (WPC80) and micellar casein. This one-two protein punch provides you with an immediate source of amino acids while also providing a sustained release for upwards of seven hours. Not only will Extreme Mass help you add lean muscle mass and improve recovery, but it can also aid in muscle preservation and prevent the breakdown of your hard-earned muscle.

WHY CHOOSE EXTREME MASS?

HIGH CALORIES & LOW SUGAR

It’s quite easy to consume everything in sight to put yourself in a caloric surplus. Unfortunately, the foods you choose could cause you to add more body fat than lean muscle. NutraBio Extreme Mass solves this issue by providing you with an ultra-clean mass gainer loaded with 53g of premium protein and 100g of quality carbs. Best of all, Extreme Mass is low in sugar, setting the industry standard for what a mass gainer should look like.

PREMIUM PROTEIN SOURCES

Extreme Mass combines fast-absorbing whey protein concentrate (WPC80) with slow-absorbing micellar casein in a 70:30 ratio. On the one hand, you have whey protein concentrate that leads to a rapid spike in amino acid levels to kickstart the recovery process and spark new muscle growth. Then, on the other hand, you have micellar casein, which tends to have a more anti-catabolic effect and a much longer and steady release of amino acids for upwards of seven hours.

CLEAN CARB TECHNOLOGY

An area that truly sets NutraBio Extreme Mass apart from the typical mass gainer is its Clean Carb Technology. Our maltodextrin isn’t what you expect to find in a standard mass gainer. Rather than using cheap maltodextrin, we used patented Fibersol-2®, which is a digestive-resistant maltodextrin that won’t cause a massive spike in blood sugar. The use of Fibersol-2® not only helps prevents the conversion to fat but also enhances glycogen replenishment and slowly breaks down glucose over a two-hour period to supply the body with a controlled, time-released, and continuous source of energy.

MUSCLE GROWTH & RECOVERY

The combination of whey protein concentrate (WPC80) and micellar casein, together, can lead to greater increases in lean muscle mass and shorter recovery times compared to when ingested separately. Even more impressive is that recent scientific evidence suggests that the proteins used in our mass gainer may boost IGF-1 (insulin-like Growth Factor), which helps the body burn fat and build muscle. If muscle growth is what you’re after, NutraBio Extreme Mass can help you pack on the added size you’re looking for.

INGREDIENTS

Whey Protein Concentrate: This high-quality WPC80 is CFM cross-flow micro- and ultra-filtered to provide a clean and instantized whey protein concentrate that is easily digested and helps provide the muscles with the amino acids needed to support lean muscle growth and recovery.

Micellar Casein: This is another form of protein that is derived from milk. Only this specific source is known as a slow-digesting protein, meaning that it releases amino acids into the bloodstream at a much slower rate than other types of protein. Due to its slow release, micellar casein is a popular choice for use before bed, as it can provide a sustained release of amino acids to support muscle recovery and growth during sleep when normally you would be in a fasted state, and catabolism may set in. Micellar casein is also commonly used in protein blends to help individuals stay full longer and extend the release of amino acids to support muscle recovery and growth.

Maltodextrin: Made from vegetable starch, this ingredient is commonly used as a low-calorie sweetener.

MCT Coconut Powder: This medium-chain triglyceride is more easily digested when compared to other fat sources. This healthy fat is known for its ability to support a healthy weight, energy production, lactate reduction, and blood sugar management.

Digestive-Resistant Maltodextrin (Fibersol2®): A patented prebiotic fiber that can help improve satiety, increase soluble fiber intake, and better manage blood sugar levels.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 98641535337

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4.9 ★★★★★
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Sage & Second Chances
Birmingham, US
★★★★★ 5
The Toy Annie Always Comes Back To
Size: X-Small, Color: Pink
⭐⭐⭐⭐⭐ These have become one of Annie's all-time favorite toys. Annie is a tiny 4-pound dog, and she can be surprisingly picky about toys. She has a basket full of options, but she consistently comes back to her nubby Nylabones. I think the size and texture are a big part of why she likes them so much. They're easy for her to carry around, chew on, and play with by herself. Whenever I buy a new one, it quickly becomes part of her regular toy rotation. As a small-dog owner, I appreciate finding toys that are appropriately sized and actually get used instead of being ignored after a few days. If you have a tiny dog who loves to chew, these are definitely worth trying. They've been a favorite in our house for a long time.
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Reviewed in the United States on May 30, 2026
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Verified Purchase
Diana Scharnus
Cuba, US
★★★★★ 4
Dogs love these!
Size: Small, Color: Pink
My miniature Goldendoodle puppies love these! The only drawback is after several weeks of chewing, the bones develop pretty sharp edges long before the actual bone has been worn down. At that point, they are dangerous for the dog’s gums and must be thrown away.
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Reviewed in the United States on June 3, 2026
P
Verified Purchase
princeton von d
Los Angeles, US
★★★★★ 5
🦴 Micro Bone, Major Relief; Perfect Puppy Teething Chew Toy
Size: X-Small, Color: Blue, Size: X-Small, Color: Blue
🐾 Hi, I’m PVD; teething survivor, nub enthusiast, and gum massage advocate. This tiny blue bone was my day-one favorite from 8 weeks to 5.5 months, it handled every chew session, tantrum, and tooth eruption with dignity. I’ve officially “aged out,” but I still salute it. ⭐ Why it earned 5 stars: ✔️ Perfect XS size for toy breed jaws ✔️ Soft on sore gums, durable enough for dramatic chewing ✔️ Ridges + nubs = mouth spa treatment ✔️ Chilling it = elite teething relief ✔️ Kept me busy and prevented chewing on illegal things (furniture, shoes… mother) 🌀 Why I’m now gracefully retiring it (but still recommending): ✘ Jaw strength and confidence grew but I didn’t vibe with the larger size versions (tried and rejected them with judgment) ✘ Texture now too gentle for my post-teething chew style ✘ Advanced chewers may get bored once the rage-chewing era passes ✘ I get gum relief via Nylabone Nubz edible chews now Best For: • XS-Small breed puppies, especially under 5 lbs • Teething stages + gum relief • Delicate chewers or fur babies still in the love-bite phase • First-time puppy parents (trust me, this bone prevents household drama!) • 8 weeks–6 months old 🚫 Not for adult teeth or advanced chew techniques. 📝 Final Re-Barks: Iconic starter bone for toy breed pups. Affordable, safe, and genuinely soothing during teething chaos. It carried me through the hardest months (and saved several legs; both human and furniture). I’ve outgrown it; but I’ll forever endorse it for the next generation of tiny chewers. — PVD (Tiny Tooth Graduate, Former Chew Therapy Success Story 🧊🦴)
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Reviewed in the United States on September 17, 2025
U
Verified Purchase
UMmba
Alexandria, US
★★★★★ 3
Nylabone Puppy Treat Starter Pack - A Mixed Bag of Delight and Disappointment
Size: Small, Color: Blue
I recently purchased the Nylabone Puppy Treat Starter Pack for my adorable 5lb puppy, and overall, I have mixed feelings about this product. While I was initially satisfied with the variety pack, one of the bones in particular left me disappointed due to its lack of durability. Let's start with the positives. The Nylabone Puppy Treat Starter Pack comes with three different toys: a blue puppy teething toy, a nylon dog toy, and a chew treat. This variety is great for keeping my puppy engaged and entertained, especially during the teething phase. The blue puppy teething toy is specifically designed for soothing sore gums, and my puppy seemed to find great relief when chewing on it. It has a pleasant texture that is gentle on the teeth and gums, making it an ideal choice for teething puppies. The nylon dog toy included in the pack is durable and sturdy. It has a satisfyingly textured surface that provides an excellent chewing experience for my little furry friend. The toy is designed to withstand the strong chewing habits of puppies, and it has certainly proven to be long-lasting compared to other toys I've tried in the past. My puppy enjoys gnawing on it for extended periods without any signs of damage. Now, let's address the bone that failed to meet expectations. One of the bones included in the pack was devoured by my puppy within a single evening. I was taken aback by how quickly it was consumed, especially considering my puppy's small size. While the other bones in the pack held up well, this particular one lacked the durability I had hoped for. I understand that puppies have strong jaws, but I expected the bone to withstand more than a few hours of chewing. Despite this disappointment, I must mention that the bone did not cause any harm to my puppy. It is important to supervise your puppy while they chew on any toys, especially if they have a tendency to swallow large chunks. In this case, I was fortunate that my puppy did not experience any adverse effects after consuming the bone. However, it's crucial to exercise caution and ensure that your puppy doesn't ingest anything that could potentially be harmful. Overall, while the Nylabone Puppy Treat Starter Pack has its upsides, I cannot ignore the fact that one of the bones failed to meet expectations in terms of durability. However, the other toys included in the pack provided a satisfactory experience for my puppy, and they have proven to be long-lasting. I would recommend this product with the caveat that you closely monitor your puppy's chewing habits and potentially avoid the bone that didn't hold up well in my particular case.
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Reviewed in the United States on May 31, 2023
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Verified Purchase
Rafael A
Lexington, US
★★★★★ 5
⭐⭐⭐⭐⭐ Great for teething puppies
Size: Small, Color: Pink
I purchased the Nylabone puppy chew toys for my teething puppy, and they’ve been a big help. The toys are the perfect size for a young puppy and feel durable without being too hard. My puppy enjoys chewing on them, and they’ve helped redirect chewing away from furniture and shoes. I also like that they’re designed specifically for puppies, so they’re gentle enough for growing teeth and gums. The variety in the set keeps my puppy interested, and the toys have held up well with daily use. They’re easy to clean and feel safe to give to a puppy. Overall, these are great chew toys for puppies. They’re effective, well made, and helpful during the teething stage. I would definitely recommend them to new puppy owners.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025

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