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Animal

Animal M-Stak Anabolic Mass Gainer Bodybuilding Supplement | 21 Pill Packs

  • Based on 1,023 reviews
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Availability: In Stock.
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Arrives Oct 22 – Oct 23
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Features

  • Maximize your Goals: Animal M-Stak combines nutrient partitioning and nitrogen retention in your muscles to help your body make the most of your workout to help muscle fullness and these weight gain pills ensure the food you eat goes to muscle and not fat
  • Ideal for Hard Gainers: This is perfect for bodybuilders or elite strength athletes that have trouble putting on weight. They are called hard gainers in the sport. If you eat your calories & cant keep the weight on, this product was designed for you
  • Advanced Formula to Build Muscle: Featuring 6 different complexes that help your body make the most of the nutrients you are putting in, this is your solution to boost energy, reduce stress, prevent muscle breakdown, and induce anabolism for muscle growth
  • Reach Peak Potential in 21 Days: On training days, consume 30-45 minutes before your workout, and on non-training days, take between meals. It's simple; by putting your body in a greater anabolic environment, notice fuller muscles and improved strength
  • Made to the Highest Quality & Safety Standards: All of our products are produced in our GMP certified US plant, and every batch is 3rd party lab tested for quality, safety and potency; our products work synergistically across our range

Description

Animal M-Stak is a premium supplement designed to optimize muscle growth and weight gain for hard gainers—bodybuilders and elite athletes who struggle to gain weight; if you eat your calories and can’t keep the weight on, this product was designed for you. Trusted by professional athletes worldwide for over 40 years, this non-hormonal enhancer helps nutrient partitioning and promotes nitrogen retention in muscles, maximizing the benefits from your workouts and diet. Accomplish your peak training potential by supplementing for 21 days straight with Animal M-Stak, the choice of champions for maximizing performance. This muscle growth mass gainer supplement is delivered in our world famous, industry respected pill pack system. Simply grab one M-Stak pack out of the container and you can throw it in your pocket or gym bag.

Product Dimensions ‏ : ‎ 3.99 x 3.99 x 5.6 inches; 0.04 ounces


Item model number ‏ : ‎ U3028


Department ‏ : ‎ unisex-adult


Date First Available ‏ : ‎ September 16, 2003


Manufacturer ‏ : ‎ Universal Nutrition


Best Sellers Rank: #19,172 in Health & Household (See Top 100 in Health & Household) #11 in Sports Nutrition Weight Gainers #1,557 in Sales & Deals


#11 in Sports Nutrition Weight Gainers:


#1,557 in Sales & Deals:


Customer Reviews: 4.5 4.5 out of 5 stars (1,023)


Brand Name: Animal


Primary Supplement Type: Magnesium


Item Form: Capsule


Product Benefits: Muscle Growth


Age Range Description: Adult


Container Type: Packet


Dosage Form: Capsule


Model Name: Animal M-Stak


UPC: 039442030283


Item Highlight: Lean Muscle Builder | Peak ATP & Astragin Enhances Strength, Performance, Energy & Focus | EAAs for Recovery | Non Hormonal


Manufacturer: Universal Nutrition


Global Trade Identification Number: 83


Item Part Number: U3028


Model Number: U3028


Manufacturer Part Number: U3028


Unit Count: 21 Count


Item Weight: 1 g


Item Dimensions: 3.99 x 3.99 x 5.6 inches


Number of Items: 1


Total Servings Per Container: 21


Flavor: Unflavored


Material Features: Natural


Recommended Uses For Product: Unisex


Color: Pills


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 22 – Oct 23

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Effective Muscle Building Supplement for Hard Gainers
Size: 21 Count (Pack of 1) Style: M-Stak
I recently started using Animal M-Stak, and I am very impressed with the results. As a hard gainer, finding a supplement that effectively supports muscle growth without hormonal components has been challenging, but Animal M-Stak has proven to be a game-changer. First and foremost, the formulation of Animal M-Stak is impressive. The non-hormonal blend is ideal for those of us who want to avoid hormonal supplements but still need a potent formula to help build muscle. The inclusion of the energy complex is a significant plus, providing a much-needed boost during intense workouts. I’ve noticed a substantial increase in my endurance and energy levels, allowing me to push harder and longer in the gym. The convenience of the packs is another highlight. Each dose is pre-packaged, making it easy to take without measuring or mixing. I can simply grab a pack and go, which is perfect for my busy lifestyle. The recommended cycle of three weeks on and one week off is easy to follow, and I’ve seen consistent results with this regimen. In terms of muscle growth, Animal M-Stak has delivered noticeable gains. Within a few weeks of starting the supplement, I saw a significant increase in my muscle mass and strength. The recovery time between workouts has also improved, reducing muscle soreness and allowing for more frequent training sessions. This has been particularly beneficial in breaking through plateaus and achieving new personal bests. Another benefit of Animal M-Stak is the lack of negative side effects. I have not experienced any adverse reactions, which is often a concern with muscle-building supplements. The product has been gentle on my stomach, and the natural ingredients give me confidence in its safety and efficacy. While the taste and size of the pills might be a bit daunting for some, I found them manageable. It’s a small trade-off for the impressive results and benefits the supplement provides. Staying well-hydrated and taking the pills with a meal helps with any potential discomfort. In summary, Animal M-Stak is an excellent muscle-building supplement for hard gainers looking for a non-hormonal option. The energy boost, convenience, and noticeable muscle gains make it a standout product. I highly recommend Animal M-Stak to anyone serious about their muscle-building goals and looking for a reliable and effective supplement to support their journey. ... show more
Reviewed in the United States on June 7, 2024 by DeAnna
    • Worth a try
Size: 21 Count (Pack of 1) Style: M-Stak
Did help out on some gains
Reviewed in the United States on August 10, 2026 by William Wheeler
    • M stak is all that!
Size: 21 Count (Pack of 1) Style: M-Stak
Okay guys listen up. I've been training for about 12 years and I consider myself a natural bodybuilder. I started taking this and felt it on the first night I tried it. I didn't work out because I wanted to see how my body would react without getting my heart rate up. I noticed my ankles and wrists started to ache. Which I knew right away meant I was dehydrated. I was about halfway through a month-long workout routine before I felt I wanted to try something to break through any plateaus. So I started integrating it in, with my high carb high protein diet. I'm completely satisfied with the results. I have gained 13 pounds and my muscles are thicker and Fuller in places that have never been before. Specifically my neck shoulders and forearms are rounder thicker and Fuller. But new muscle everywhere. I believe my body fat percentage has gone down at the same time the scale has gone up. I typically walk around between 12 and 13% body fat. It has always been a challenge for me to gain weight even when my diet is dialed in. I have to bust my ass just to put on one pound of solid muscle. Granted I've been killing it in the gym but these pills have definitely help me with new gains. No question about it. I never took the red pill, just because I felt as though I never needed it. My energy levels have been great my appetite has been up, and the best thing about these pills is my sleep quality. I sleep so freaking hard and have some vivid dreams. Seriously I haven't slept this good in a long time. I know some of my weight gain has been water. I've been trying to get about a gallon a day, but that's natural when you're training hard. The only negative is taking all these pills but who really cares when your seeing Gains.right? I can't comment on the red pill because I never took it, but overall I give this product 5 stars. My strength has gone up and my focus in the gym is amazing. I definitely recommend it for someone trying to break a plateau and/or the typical hardgainer ... show more
Reviewed in the United States on June 9, 2017 by dustin
    • Works
Size: 21 Count (Pack of 1) Style: M-Stak
Works
Reviewed in the United States on May 14, 2026 by Jab
    • Good stuff!
Size: 21 Count (Pack of 1) Style: M-Stak
I really do like this stuff. Makes you NOT wanna leave the gym
Reviewed in the United States on August 25, 2026 by Driven II Live
    • Fast
Size: 21 Count (Pack of 1) Style: M-Stak
Fast
Reviewed in the United States on August 19, 2026 by Monte
    • Great product! Felt a big increase in energy
Size: 21 Count (Pack of 1) Style: M-Stak
I began using Universal Nutrition's M-Stak, like most I'm sure, as a skeptic. I'm a young guy that's been lifting pretty consistently for the better part of a year or so. Between the tiresome hours of work and school, my workouts had been getting shorter and I felt I wasn't putting in near as much effort as I could've, or maybe should've been. As a result, I started to plateau. My stats didn't increase much, nor did I get any bigger. I knew there had to be something out there for the guys with a busy schedule! That's when I came across this great product. I thought "Hey, with all of these great reviews, it's worth a shot". For the first week or two on the supplements, I didn't notice much of a difference besides an increase in energy after taking the caffeinated pill. It wasn't until I was 2/3 of the way done with my bottle that I started to notice I was working my way out of my plateau. I started to notice my arms getting bigger, and my stats steadily increasing. I highly recommend this product to all of those who can fit this in their budget, and even those that have to shift priorities to make room in their budget. You won't regret it. ... show more
Reviewed in the United States on October 6, 2016 by Austin Wright
    • New Formula is weaker…
Size: 21 Count (Pack of 1) Style: M-Stak
I have been using M-Stak since 2009. It’s been my go to all these years but the last two to three times I have use the new formula it has been a placebo more than anything. What got nerfed this badly. Is anyone else suffering the same effect? I absolutely love this product but in its current version it just isn’t what it was… ... show more
Reviewed in the United States on July 3, 2026 by Kindle Customer

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