Labor Day Flash Sale! Buy 1 get 1 free deals and more! 24 hours only.
Menu
Searching...
No results found
7 Day Customer Support
  • Live Chat
  • 1-800-537-9910
USD
0
Cart
Stak

Animal Stak

An Product
Complete Anabolic Support Stack For Serious Lifters*
  • Pro testosterone complex w/ tribulus*
  • Aromatase combating complex w/ resveratrol*
  • Growth hormone (GH) support complex*
  • Hormone amplifying blend w/ carnitine*
267 Reviews
Share
M&S Rewards Logo
Muscle & Strength Rewards

Earn 2 points for every dollar you spend at Muscle & Strength! Spend your points on order discounts, fitness gear and exclusive products.

Learn More
M&S Promos and Deals Logo
Unbeatable Deals

We run the best deals and discounts on the biggest nutrition and fitness brands!

View All Deals
M&S Delivery Truck
Free Shipping on $99+ Orders*

Spend $99 to get FREE shipping in addition to our unbeatable deals! Plus, 100% money-back guarantee on every product we sell.

*USA Only. Excludes: AK, HI, orders above 25lbs and bulk orders.

Learn More
Credit Card Logo for Refunds
60 Day Guarantee

Not happy with your purchase? No problem. Simply return it to us within 60 days and we'll replace it, credit your account, or give you a full refund.

Learn More
Mobile Phone Logo
Contact Us

If you have any questions about products please call us on 1-800-537-9910 or email support@muscleandstrength.com

Deals
Limited Time Price Cut
Limited Time Price Cut
Buy 1 Animal Stak 21 Paks for only $39.99! Limited time only.
Buying Options
$54.79
$39.99 39.9900
21 Paks
21 Servings | $1.90 Per Serving
Limited Time Price Cut
–
+
 
Secure Transaction
Reward Points Earned
0 Points
Notice This product cannot be purchased using PayPal.
Nutrition Info

21 Paks

Serving Size: 1 Pack
Servings Per Container: 21
Amount Per Serving
Amt
%DV
Vitamin D (as cholecalciferol)
25mcg
125%
Vitamin B6 (pyridoxine HCl)
10.5mg
618%
Magnesium (as oxide)
425mg
101%
Zinc (as oxide)
25mg
227%
Pro Testosterone Complex
1500mg
†
Tribulus terrestris Extract
 
†
Eurycoma Longifolia Complex
 
†
Fenugreek (seed)
 
†
Stinging Nettle (root)
 
†
Maca extract (root)
 
†
Growth Hormone Support
1500mg
†
Arginine HCl
 
†
L-Lysine HCl
 
†
L-Glutamine
 
†
Gamma oryzanol
 
†
Alpha Glycerylphosphorylcholine
 
†
Aromatase Combating Complex
300mg
†
Japanese knotweed extract
 
†
Diindolylmethane (DIM)
 
†
D-Glucarate
 
†
Hormone Amplifying Blend
500mg
†
L-Carnitine Fumarate
 
†
Agmatine Sulfate
 
†
Quercetin
 
†
Black Pepper Extract
 
†
Astaxanthin
 
†
Restorative Support Complex
500mg
†
Milk Thistle Extract
 
†
Astragalus (root)
 
†
Ashwagandha Extract
 
†
Na-R-Alpha Lipoic Acid
 
†
Coenzyme Q10
 
†
* % Daily Value is based on a 2,000 calorie diet. Your daily values may be higher or lower based on your calorie needs.
† Daily Value (DV) not established.
Ingredients
Gelatin (bovine), silicon dioxide, magnesium stearate, dicalcium phosphate, stearic acid, titanium dioxide, calcium d-glucarate, FD&C Blue #1, FD&C Yellow #5, FD&C Yellow #6.
Allergen Warning
Contains: Soy. Made in a GMP facility on equipment that processes milk, soy, egg, peanuts, tree nuts, fish, shellfish, and wheat.

Take a single pack daily for 21 straight days. On training days, take it 30-45 minutes before lifting. On non-training days, take it between meals, on an empty stomach whenever possible. For best results, "cycle" this product following a schedule of three weeks on and one week off. Best results if used by those who are 25 or older. However, due to its ability to help modulate free test levels, it could benefit others as well.

Not for use by individuals under the age of 18 years. Do not use if pregnant or nursing or if you have a serious medical condition. Consult a physician before using this product. Use of this product may be banned by some athletic associations. Athletes should definitely consult with their sanctioning authority before use. Exercise good judgment and keep this out of reach of children. To keep it as fresh as possible, store this product in a cool, dry place, away from heat, moisture and sunlight. You know the drill.
Directions
Warnings
Expand Info
Product Information
Animal Stak banner with container and branded background

PRO TESTOSTERONE COMPLEX WITH TRIBULUS

Increased muscle mass and strength, while also boosting energy and feelings of vitality*

Stak benefits and male athlete performing deadlift

AROMATASE COMBATING COMPLEX WITH RESVERATROL

Supports healthy estrogen levels to avoid side effects from heightened testosterone levels*

Ingredients that work hard

GROWTH HORMONE (GH) SUPPORT COMPLEX

Increased muscle fullness and enhanced body composition with better pump and improved blood flow*

Stak pill explainer elaborating on benefits of each pill in the stack

HORMONE AMPLIFYING BLEND WITH CARNITINE

Enhance testosterone boosters and the growth hormone elevation*

Animal brand footer with icons
Reviews
Overall Rating
4.8 out of 5 stars
Reviews (267)
Verified Buyers (258)
Review Graph
  • 5 star
    86%

  • 4 star
    11%

  • 3 star
    2%

  • 2 star
    0%

  • 1 star
    1%

Overall Rating
    Show More +
    Show Less -
User Image
Mehdi M
Healthy Lifestyle
Verified Buyer
As someone who trains consistently and prepares for bodybuilding competitions, I was looking for something to support my performance without making unrealistic claims. Animal stak delivered exactly that. I experienced better workouts, faster recovery, and improved muscle fullness. It didn't work like magic, but when combined with proper nutrition and hard training, it definitely made a noticeable difference. ⭐⭐⭐⭐⭐*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-07-29 11:45:37Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Tamara B
Build Muscle
Verified Buyer
Stak keeps the muscles stacked. I’ve stacked both Stak and M-Stak and they do well together, however when I’m not trying to put on weight, Stak does the job alone. *
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-07-29 11:44:34Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Panayiotis P
Burn Fat
Verified Buyer
One of the best supplements that someone can take for overall building.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-07-17 18:01:37Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Fernando Jorge S
Build Muscle
Verified Buyer
Love this hormone booster, made the difference and the Animal products are the best*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-07-17 17:24:57Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Warren J
Verified Buyer
Good product, definite increase in strength and workout performance.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-07-17 17:24:57Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Panayiotis P
Burn Fat
Verified Buyer
It worked for me. I am on the 3rd order. Use it as instructed.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-07-17 17:18:04Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Angel S
Healthy Lifestyle
Verified Buyer
For good recovery and animal strength, this stack has everything you need. I recommend it...you'll see.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-06-05 21:22:13Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Panayiotis P
Burn Fat
Verified Buyer
Heped me to control my weight! I saw muscle gain, lean. Works 100%*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-06-05 21:07:20Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Antonio A
Verified Buyer
Animal Stak is a solid supplement , noticeable boost in energy and recovery, with good results when training consistently.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-06-05 21:07:20Z
Loading
Overall Rating
    Show More +
    Show Less -
User Image
Storm W
Verified Buyer
Um, you're not supposed to feel this "Jacked" on anything available legally, but Animal has brought full-tilt anabolic to a whole new level. You won't find anything like this on the market. Complete, muscle-pumping formula that will get your workouts and recovery a new meaning.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2026-05-27 15:27:18Z
Loading
Loading
View 10 More Reviews View All Reviews
* Muscle & Strength does not imply any medical claims from this review. There are no guarantees of specific results and results may vary.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Which products should we notify you about?


  • Loading product choices...
Text Message Alert
+1

Success!

We will notify you when the products you selected are back in stock.

The Difference
Unbeatable
Deals & Prices
The best deals and discounts on over 8k products!
Earn Rewards
On Everything
Earn rewards that you can use on free gear and discounts!
Satisfaction
Guarantee
If you're not 100% satisfied we'll give your money back!
7 Day
Customer Support
Our team of fitness experts is standing by 7 days a week!
Customer Service
M&S Rewards
FOLLOW M&S
Contact Us

Muscle & Strength, LLC
1180 First Street South Ext
Columbia, SC 29209
PH: 1-800-537-9910
Email: click here

Join Our Newsletter

Build muscle, lose fat & stay motivated. Join 500,000+ newsletter subscribers!

Brett and Megan
THE TOOLS YOU NEED TO
BUILD THE BODY YOU WANT®
About Careers Write for Us Terms of Use Privacy Policy Cookie Policy Accessibility Statement
© Copyright 2005-2026, Muscle & Strength LLC. Images copyright of their respective owners.

Login

Forgot Password?