Animal Stak – Complete Natural Hormone Booster Supplement with Tribulus – Natural Testosterone Booster for Athletes – Contains Estrogen Blockers – 1 Month Cycle
Original price was: $46.50.$39.77Current price is: $39.77.





Price: $46.50 - $39.77
(as of Oct 18, 2025 22:00:31 UTC – Details)
Animal Stak is a comprehensive, and natural, anabolic and performance supplement to help men build lean muscle. Including our Pro Testosterone Complex, this formula is packed with ingredients like maca root extract and eurycoma longifolia to boost natural testosterone levels so you can experience increased muscle mass, strength, energy and vitality. Including our natural hormone booster supplement with Tribulus, Stak naturally enhances output of testosterone and GH with 5 unique complexes. At the same time, it helps block estrogen with ingredients like Resveratrol, to help maintain healthy levels and reduce side effects. Stak also intensifies levels of growth hormones for better pump and blood flow plus improved body composition. Lastly, our “Hormone Amplifying Blend” is essentially the “gasoline on the fire” in this inferno. Lead by Carnitine, Agmatine Sulfate and Astaxanthin among other ingredients, this blend may help enhance both the Testosterone boosters and the Growth Hormone elevation. The intensity of this product is largely available due to this unique and important complex. With all of these key ingredients help elevate your natural testosterone and GH levels while keeping your estrogen levels in check, Stak can support your goals of obtaining size and strength.
Is Discontinued By Manufacturer : No
Product Dimensions : 5 x 5 x 7 inches; 7.05 ounces
Item model number : U3023
Department : unisex-adult
Date First Available : May 27, 2004
Manufacturer : Universal Nutrition
ASIN : B000GOX0JI
Best Sellers Rank: #6,866 in Health & Household (See Top 100 in Health & Household) #9 in Sports Nutrition Testosterone Boosters #842 in Sales & Deals
Customer Reviews: 4.5 4.5 out of 5 stars 5,175 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
The Complete Anabolic Hormone Stack: Developed for athletes who are looking to break through plateaus and personal records, this comprehensive performance support supplement helps build muscle mass and improve power and strength output
Naturally Boosts Hormones: Stak works with your body to enhance testosterone and GH levels – while blocking estrogen – to improve pump and increase muscle mass, strength, energy and vitality
Convenient, Stackable Pill Pack: Take one pack daily for 21 days, then 7 days off; Consider stacking with Animal Test or M-Stak for greater gains
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
Trusted by Performance Athletes for More than 40 Years: Animal is family-owned and has pushed sports nutrition forward, that’s how we’ve earned the trust of dedicated strength and performance athletes who know that we are all built, not born
Customers say
Customers find the supplement effective, with one noting it works within 10 days, and they appreciate its quality, with one describing it as the finest PCT on the market. The product helps elevate testosterone levels and promotes muscle growth, while providing sustained energy and increased stamina during workouts. They report improved workout performance and strength gains, with one mentioning it helped break through a plateau. While some customers say it’s good value for money, others find it overpriced, and there are mixed experiences with side effects, with some reporting headaches and stomach discomfort.
12 reviews for Animal Stak – Complete Natural Hormone Booster Supplement with Tribulus – Natural Testosterone Booster for Athletes – Contains Estrogen Blockers – 1 Month Cycle
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Original price was: $46.50.$39.77Current price is: $39.77.
Tim McCary –
5 Stars â Outstanding Results and Quality!
Iâve been using Animal Stak for a month now, and I can confidently say itâs a game-changer. As someone who trains rigorously, this natural hormone booster has elevated my energy, strength, and endurance during workouts. The inclusion of Tribulus and estrogen blockers is a thoughtful touch, as it supports optimal testosterone levels without the unwanted side effects.Iâve noticed improved recovery times, better focus, and an overall boost in performance. Plus, the capsules are easy to take, and the quality of the ingredients is evident. If youâre serious about reaching your athletic potential, Animal Stak is a must-have in your supplement arsenal. Highly recommended!
massimiliano dicent –
Excelente producto
Excelente producto
DeAnna –
Effective Natural Hormone Booster
I recently started using Animal Stak, the complete natural hormone booster supplement with Tribulus, and I am very pleased with the results. This supplement has significantly enhanced my workout performance and overall vitality, making it a great addition to my fitness regimen.First and foremost, the formulation of Animal Stak is impressive. It includes a blend of natural ingredients designed to support and optimize hormone levels, particularly testosterone. The inclusion of Tribulus, along with other beneficial herbs and nutrients, creates a comprehensive and balanced supplement that promotes overall well-being.One of the most noticeable benefits I’ve experienced is an increase in energy and stamina. Since incorporating Animal Stak into my daily routine, I’ve felt more energized and motivated during workouts. This boost in energy has allowed me to push harder and extend my training sessions, leading to better results and improved strength gains.The muscle recovery aspect of this supplement is also noteworthy. Animal Stak has helped reduce post-workout soreness and fatigue, allowing me to recover more quickly and get back to training with less downtime. This has been particularly beneficial in maintaining a consistent workout schedule and achieving my fitness goals more efficiently.Another significant advantage of Animal Stak is the natural support it provides for hormone balance. I’ve noticed improvements in my overall mood and sense of well-being, which I attribute to the optimized hormone levels. The natural ingredients in this supplement offer a safer alternative to synthetic hormone boosters, giving me peace of mind about what I’m putting into my body.The convenience of the daily packs is a great feature. Each serving is individually packaged, making it easy to take on the go and ensuring that I don’t miss a dose. The packs are also clearly labeled and contain a comprehensive blend of ingredients, eliminating the need for multiple separate supplements.In summary, Animal Stak is an effective and well-rounded natural hormone booster supplement. Its blend of natural ingredients, including Tribulus, provides enhanced energy, improved muscle recovery, and balanced hormone support. I highly recommend this supplement to anyone looking to optimize their fitness performance and overall well-being naturally. It has exceeded my expectations and become a valuable part of my fitness routine.
Neil ‘Superfly’ Guy –
Will help a strict diet and training regime.
STAK is a hormone enhancer, not to be confused with M_STAK which aids (amongst other things) protein synthesis. This from their forum – “ANIMAL STAK is a natural hormone “enhancer”. It works with your body to: (1) help “boost” key anabolic hormone levels and (2) enhance overall hormone function (such as improving the ratios of free to total testosterone). Stak, therefore, is a hormone modulator.I have found that when taken together, both supplements are very complementary but do have different roles. As my aim (as a Free-Runner) is to remain strong but light, I am on a very low fat high protein diet training 16 times over a ten day period during a ten week training rotation. I am able to maintain this routine injury free without fatigue partially (I believe) due to supplementation with STAK and M-STAK (as well as creatine and protein).As with any form of supplementation, results are subjective but as I am able to train at the same times with the same diet the positive (or negative) impact of anything I take is noticeable. Coming to the end of this 10 week training rotation I have covered two cycles (21 days on, 7 days off) and the improvements have been noticeable. I have remained at 170lbs but power exercises likes dips, wide grip pullups and hill sprints have seen improvements of around 10 – 15%.Now for the negatives, the tablets/capsules are not easy to swallow, I use V8 juice to get them all down and even that can be a chore, also the cost as both STAK and M-STAK are far from cheap, for me though I only take them during my 10 week high intensity training program which is followed by 4 weeks of supplement free less frequent session (3 x resistance + 3 cardio per week).
Steven Hutchison –
Instant Upgrade To My Workouts
On my 2nd cycle now. I was skeptical at first but I have noticeably more strength, energy, and a longer pump going into the next day. My volume of reps has increased.
Andrew –
Stop searching and just buy this.
After searching for something to give me a bit more of an edge in the gym and help me get back to where I was when I was younger, I tried 3 other products (all at a higher price point) prior to finding this and really didnât see the results that I was looking for or was advertised. Iv always been skeptical of these kinds of products and really only decided to give this one a try as a last ditch effort strictly because the reviews were so good. And the reviews were absolutely spot on. After only just 1 week into taking this itâs easy to see and feel a difference. My performance in the gym has had a dramatic improvement, overall I feel fantastic, and my sexual stamina is back to where I was when I was 10-15 years younger. This should almost be illegal. Iv already recommended this to every guy I know whoâs trying to get after it and although I never really write reviews, I felt I needed to write this one. This stuff is magic.
Matthew –
They use artificial dyes in their product
Overall, the actual substances on the product work.However, the excess use of dyes such as the “blue & yellow” combo is unneeded and is also toxic to human consumption.Are you 6 years old and need a set of bright colored pills to consume them?? Ridiculous.3 stars for the poor use of synthetic and chemically created dyes.
Hassan Berjawi –
It’s really good.
Naroboi –
Like the product, I will definitely gonna get another one.
Ignacio –
Funciona, la verdad es que se nota.
slipknot fan –
I have been working out for nearly 12 years now and have taken many different supplements. I have aways been and will always be a Universal Nutrition customer! For those who are looking for the “Super” substance to take between eating pizzas and playing on the computer this is NOT for you! This is a testo booster! That is its main job! For me it works wonders. I have never seen such results especially in my biceps as with this supplement. You have to eat right, train hard, and take this as per instructed for the best results. If you do not then this is just a waste of money. For me it is perfect. No side effects and you can stak it with almost any different supplement for the best effect! Train hard or go home!
Mr Can –
I noticed a different when I take it and when I don’t.