Animal M Stak | GNC

Universal Nutrition Animal M Stak


Item # 417296
Note: This product cannot be sold in Canada

Product Information



Animal M-Stak™ - The Hardgainer's Stack

Some will say Animal M-Stak is the perfect hardgainer's pack. Others will say it's a plateau buster in a can. Whatever you call it, Animal M-Stak flat out works, thanks to its unique nutrient-partitioning effects and its ability to help promote anabolism via protein synthesis, nitrogen retention, while reducing muscle wasting (catabolism).

Animal M-Stak's potency starts with its unique Natural Flavone/Sterone Complex. These natural flavones and sterones act as nutrient-partitioning agents to help shuttle needed calories specifically to lean mass instead of toward body fat deposition. Remember, it's not just about eating but actually drawing the nutrients to the muscles where you want them, in an efficient manner that will ultimately build new size.

Animal M-Stak is also stacked with a mega potent Anti-Catabolic Amino Complex. These aminos work to stimulate protein synthesis at the level of translation initiation through non-hormonal signal transduction by manipulating key muscle growth regulators mTOR, PKB, p70s6k, 4E-BP1, FOXO and MAFbx. These are crucial components for optimizing while body protein balance and are facilitated via the leucine-heavy amino blend so integral to the Animal M-Stak formula.

The synergy between the natural flavones and sterones is central to the effectiveness of the Animal M-Stak. But the growth potential of this formula does not stop there. Animal M-Stak's Anabolic Adaptogens work to give you the ability to cope with the stresses of lifting and daily life by helping to reduce Cortisol and other damaging, muscle-wasting catabolic agents. Anabolic Adaptogens work to ensure the anabolic status of your internal environment, allowing you to more readily pack on mass. Animal M-Stak also contains cutting-edge insulin potentiators, which work to ensure that your body will utilize ultra anabolic insulin effectively and efficiently.

But Animal M-Stak is more than just a "hardgainer's" supplement. It may be suitable for drug-tested athletes. Further, Animal M-Stak contains a potent energy blend designed to propel you through your most intense gym sessions. Beyond that, the Animal M-Stak formula is tied together by the M-Factor absorption complex intended to maximize nutrient utilization to ensure that all of the powerful elements of the Animal M-Stak formula are processed to maximum efficacy.

Animal M-Stak is just the supplement you've been looking for, for natural gains. It's a non-hormonal anabolic formula capable of enhancing performance and promoting the necessary environment for you to add lean mass. If you feel you're training has been missing something, you're right. Animal M-Stak is here, turning "hardgainers" into "hard" gainers.


Nutrition Facts
Serving Size  1 pack(s)
Servings Per Container  21

Amount Per Serving     % DV

Natural Flavone/Sterone Complex  750 mg   **
Anti-Catabolic Amino Complex  3000 mg   **
Anabolic Adaptogen Complex  1000 mg   **
Insulin Potentiating Complex  500 mg   **
M Factor Complex  500 mg   **
Energy Complex  500 mg   **

** Daily Value (DV) not established.
Other Ingredients
Methylxanthine Complex (50% kola nut extract and 22% guarana extract), fenugreek extract, Cyanotis Vaga Extract, evodiae fructus extract, Grapefruit Extract, cinnamon root extract, Gelatin, Dicalcium Phosphate, whey powder (milk), Microcrystalline Cellulose, Titanium Dioxide, Stearic Acid, Magnesium Stearate, FD&C Blue #1, FD&C Red #40
Label (click image to enlarge)

How To Use

Take one pack every day for 21 consecutive days. On training days, take pack 45 minutes prior to exercise. On non-training days, take pack in the morning or early afternoon. Cycle product for maximum results: three weeks on and one week off. Repeat as desired. Combine with Animal Pak for superior results.
Formulated and Manufactured By:
Universal Nutrition
New Bruswick, NJ 08901


4.8 / 5.0
15 Reviews
5 Stars
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1 Star
Get it!
Great product, helps with anything you can think of! I’ve noticed a lot of change in performance and all around athletisicm! I definitely recommend
November 24, 2017
Very good
One of Best!
You be happy with the results.
November 12, 2017
1 year ago
Hardcore product
Finally! Something that has put only hardcore muscle mass on me and added pounds and pounds to all my maxes. I'm 155 pounds now deadlifting three times my body weight after only months after breaking my wrist! This product helped me bounce back and is awesome!!!!!
A must have for serious lifters
Takes a little to get used to taking so many pills but works very well especially when you stack it with the animal stak. I love their products worth the money
July 25, 2013
totally awesome!
im 29 years old and been working out for about 4 years. i wrote a review for animal stak because i take animal stak and m-stak together because i noticed they worked best together. all i can say is that this thing is awesome. I've used all type of supplements and always come back to the truth! get on the animal train of fall behind! get bigger faster. thats all i have to say.
February 27, 2013
My Number One So Far
If you know your body and what needs and what it can benefit from, then this stuff is for you! I wouldn't say it's really a supplement pack for beginners and nor is it for abusers (would have little or zero effect for those of you). Be smart and follow the directions on the label.

It allowed me to keep a steady workout and know when I wouldn't benefit from doing anymore reps. Eveyday was an improvement with ideal recovery time. I just finished my first cycle this morning, and my body is kind of tired from the level stress I've maintained for the past 3 weeks. I'm definitely taking a week off.. overall my body has achieved optimum endurance and strength. I know I'm nowhere near peaking, and I never have to choose running over lifting or vice versa. It allows longer intervals between workouts without sacrificing those hard earned gains.

I'm going to try another Animal product (TEST pak), but this my no fail go to stak pak! I'd like to say that I can control my emotions (specifically agression and hostility), so a cycle with TEST would be very interesting. Next time I choose M-Stak I'm going to use it with Jack3d. A good powdered preworkout seems necessary with this to begin hard and finish strong. I wouldn't dare use Jack3d with a test booster since I never use them. I would never try Jack3d with anything I've never used due to its potency. I'd probably turn into a wild animal.. lol, sorry.. Good name for a sports nutrition company.

I'm 21, perfect health, 190lbs, 5'7", eat healthy, and was already in great shape.. so I'm pretty ideal for this product. I'll post a review for TEST at the end of next month. Take care of yourselves!
October 22, 2012
This stuff is great! It really does bring out the ANIMAL in me!
March 4, 2012
Outstanding Product
Animal M-STACK has added a new intensity to my workouts. I'm burning fat and getting stronger by the day. Can't recommend this product enough for someone looking to cut while maintaining their strength.
November 30, 2011
Huge Gains
I've taken this product every day around noon with lunch, and I've seen huge gains in mass in the few weeks I've been using it. Of course my bulking diet is helping with that, but I'm also getting significant increases in strength.
October 21, 2011
Great Product. Just what the Dr. Ordered
I have used this product for 2 weeks now and wow what a difference it has made. I combine with C4 before workout and i feel like i am unstoppable. My trainer noticed a big difference in my lifting and recovery time. This is by far one of the best products that i have used to give me that added edge that i was looking for.
August 14, 2011
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 17 questions Browse 17 questions and 17 answers
Just want to know what the difference m stak and stak ?
A shopper on Jan 11, 2012
BEST ANSWER: This is meant more for hard-gainers and has higher doses of amnio acids.
I workout everyday will this help gain muscle mass?
A shopper on Jan 12, 2017
Is this appropriate for a soon to be 16 year old 3 sport athlete to take?
A shopper on Jun 29, 2016
BEST ANSWER: If you're under 18 you shouldn't be taking supplements. Definitely consult with your doctor first.
Can women use this product?
A shopper on May 15, 2014
BEST ANSWER: Yes, women can use this product as well as men.
Is the animal m stak banned by the NCAA ?
A shopper on Jul 2, 2013
BEST ANSWER: The NCAA does not ban specific products or supplements. They restrict the use of specific ingredients. Animal M Stak does not contain any banned ingredients.
I'm 19 and i wanna try this product, i had been taking animal pak and its amazing, but i just wanted to see if its okay to me to take this product?, and my sleeping would be normal?
A shopper on Mar 2, 2010
BEST ANSWER: Yes you can take. I'm 20 and I just complete my first 3 week cycle of it. i got great results so far, incredible strength gains, intense focus and energy, and as long as you train hard, you'll be sleepin like a baby.
recently i have bought M-Stak, it contains a red pill that boost energy, do i have to take it in rest days??
A shopper on May 10, 2014
BEST ANSWER: Yes it should be taken both on rest and workout days.
A shopper on Aug 9, 2013
BEST ANSWER: This is to be used 45 minutes pre-workout on training days and in the morning or early afternoon on non-training days. This product is recommended for natural bodybuilders & powerlifters, classic "hardgainers", and claims to maximize muscle gains naturally and optomize non-hormonal anabolism.
Can I use M-Stak and take a post-workout whey protein/creatine shake?
A shopper on Dec 31, 2013
BEST ANSWER: The specifications indicated that the M-Stak is synergy and sterones are central to its effectiveness. Therefore it is not necessary to take a whey protein/creatine shake after a workout.
I want to gain muscle mass can i use m-stak.
A shopper on Dec 7, 2013
BEST ANSWER: If used with a regular workout regimen, M Stak will help build muscle mass.
hi, i want to gain muscle mass but also loose fat and turn fat in lean muscle, will M-Stak do this?

A shopper on Feb 24, 2012
BEST ANSWER: This product is meant to be used in conjunction with a weight lifting regimen, and when used properly will help burn fat and build muscle.
I was wondering what is the best way to take the pack whether is taking a certain few as a pre-workout and the others as a post, but does anybody suggest what is the best way to take the pack ?
A shopper on Jan 6, 2012
BEST ANSWER: You want to take the entire pack at once. On your training take it 45 minutes prior before your workout. On your off days take the pack in the morning or early afternoon.
Can you use this with protien as well?
A shopper on Dec 31, 2011
BEST ANSWER: Universal Nutrition Animal M Stak can be stacked with the protein source of your choice.
how exactly do you take this stuff?
A shopper on May 29, 2010
BEST ANSWER: As it says in the description " As it contains no steroidal hormones, it may be suitable for drug-tested athletes" But you may want to test with your coach or trainer to be sure but it shouldn't be a problem.
Im 15 and want to gain alot of muscle and increase my overall strength, is this ok for me to take? i workout at least 4 times a week and take protein but want something to build muscle
A shopper on Mar 1, 2010
BEST ANSWER: You probably shouldn't be taking anything other than protien at 15... Just work hard and get proper rest/recovery. You have extremely high levels of testosterone at your age.
i know some people already taking the M-Stak and i was wondering how safe is it for women to take it? I witness people get mean and nasty to others while on it. Even though they claim it has no hormones or steriods in it. So what the real truth, I work out just as hard as anyone else, and i don't want to take it and be mean and grow facieal hair and such. I want something to give that extra something to help in my performance needs.
A shopper on Sep 30, 2009
BEST ANSWER: In all honesty, I think mood swings and anger, increased tempers on this or other supplements are just a lame excuse to be a jerk to people. I take this and a testosterone booster/estrogen decreaser, and I am no meaner, no mood swings, and I have not experienced increase of hair growth.
can m stack be stack with animal cut ?
A shopper on May 22, 2016