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Animal Stak Review - 11 Things You Need to Know

Animal Stak is a natural anabolic hormone stack powder made by Animal Pak, a company popular for its proprietary formulas for anabolic supplements. Animal Stak is said to have a cutting-edge formula that includes anabolic hormone boosting nutrients that are essential for bodybuilders and powerlifters alike. Can Animal Stak help you outperform your own performance goals?

Our research team investigated the ingredients of Animal Stak, including vitamins D3, B6, magnesium, zinc, pro testosterone complex with LJ-100, growth hormone support, aromatase, and hormone amplifying blend that can enhance your fitness performance. The research team dug deep to find the answers. Here are the findings of the research.

Animal Stak can be purchased through their Official Site.

Animal Stak Readers: Noom is offering our readers a risk-free trial, for a limited time. Click here for more information!

What is Animal Stak?

What is Animal Stak

First of all, Animal Stak is a testosterone-boosting supplement designed to enhance strength and performance while naturally raising your testosterone levels. It’s called the “complete anabolic support stack” by the makers, promising a cutting-edge, non-hormonal product.

We’re curious to get into the ingredients here since you need to take so much of it with each dose. The combined ingredients in Animal Stak are extensive, including:

  • Tribulus Terrestris Extract
  • Longjack Extract Complex
  • Fenugreek Seed
  • Stinging Nettle Root
  • Maca Extract
  • L-Carnitine Fumarate
  • Restorative Support Complex

The list goes on. However, the very first thing we noticed was the quality of some of the ingredients, which is a good start. These ingredients are supposed to naturally increase a man’s testosterone levels while increasing energy and helping with muscle recovery, so why don’t we tackle a little research to see just what you can expect before we delve deeper into Animal Stak?

  • Journal of Dietary Supplements – Though tribulus is commonly used in natural testosterone support supplements, there’s more evidence it works to improve sexual mood and performance than test levels.
  • Complementary Therapies in Medicine – Longjack, also called tongkat ali, has been shown to positively affect erectile function, making it appear that Animal Stak is impacting test levels.
  • Phytotherapy Research – Research completed in 2020 ascertained that fenugreek affects testosterone levels, but the research abstract didn’t state its effect.

Animal Stak and the BBB

Universal Nutrition is the parent company for Animal Stak. They currently have a BBB rating of “A+.”

Animal Stak Competitors

Animal Pak
Animal Cuts
1Up Nutrition
1st Phorm

Animal Stak Directions

You’re instructed to take one pack of capsules per day for three consecutive weeks. Take it 30 minutes before your exercise on training days. On days when you aren’t training, take it prior to bed.

For best results, you should cycle this supplement for three weeks on and take one week off.

The one issue that’s rarely mentioned in the directions is the number of capsules you’re supposed to take. One customer reported that there were eight capsules in each serving or “pack.” That’s a fistful of pills not many people are willing to take.


Animal Stak Ingredients

Animal Stak Ingredients

Here’s the part where we take a close look at the ingredients of the supplement. For this price, we want to make sure that the formula is proven to work – otherwise, you might as well stack your money up and toss it out the window.

Tribulus Terrestris Extract

This fruit-producing Mediterranean plant has been taken for years to enhance athletic performance, improve bodybuilding results in a post-cycle therapy or PCT program, as well as for a slew of other health benefits – including heart and circulatory conditions, according to BMC Chemistry.

Fenugreek Seed

This ingredient is an herb, much like clover, and is also native to the Mediterranean region. You use fenugreek seed for a wide range of benefits, including upset stomach, constipation, and inflammation, based on research in the Indian Journal of Pharmacology.

The Iranian Journal of Pharmaceutical Research wrote, “Adjuvant therapy to the fenugreek seeds extract (with metformin) in PCOS women improved the sonographic results and menstrual cyclicity.”

Stinging Nettle Root

As scary as this ingredient sounds – it’s not. Stinging nettle root is used for urinary issues, mostly.

It was used as a laxative by the Ancient Greeks. Today, it can be applied to the skin to treat aches and pains. Research in Molecules claims it works as an antibacterial.

Some research backs this ingredient for prostate enlargement relief, but nothing that backs this formula at all.

Longjack Extract Complex

Longjack, or Eurycoma longifolia, is an evergreen shrub tree native to Southeast Asia. This ingredient is used in Malaysian medicine for its potential benefits on sexual performance.

The Journal of the International Society of Sports Nutrition conducted a study on 63 participants to see if Eurycoma longifolia could improve stress hormone profiles.

They concluded that “…daily supplementation with tongkat ali root extract improves stress hormone profile and certain mood state parameters, suggesting that this “ancient” remedy may be an effective approach to shielding the body from the detrimental effects of “modern” chronic stress, which may include general day-to-day stress, as well as the stress of dieting, sleep deprivation, and exercise training.”

Maca Extract

Maca has been cultivated as a vegetable crop for over 3,000 years in Peru. Closely related to the radish, maca is taken to fight fatigue and enhance athletic performance, stamina, and memory, though the journal Food Chemistry claims strong research into possible benefits is lacking.

In a systematic review by BMC Complementary and Alternative Medicine, researchers wrote, “The results of our systematic review provide limited evidence for the effectiveness of maca in improving sexual function. However, the total number of trials, the total sample size, and the primary studies’ average were too limited to draw firm conclusions. More rigorous studies are warranted.”

While some of these ingredients are backed by research, which we love, it doesn’t tell us much if there’s no scientific evidence on the formula – which we don’t love.

Side Effects

Animal Stak Side Effects

Animal Stak Side Effects

Here is where we dive right into the product’s potential side effects to see if the juice is worth the squeeze, or in this case, if the testosterone booster is worth the price tag.

First, the side effects mentioned by customers included:

  • Diarrhea
  • Trouble sleeping
  • Acne
  • Erection Problems

There is also a chance that testosterone supplementation could shut down users’ hypothalamic-pituitary-testicular axis, or HPTA.

It’s important to note that everyone is different and reacts differently to specific ingredients. Just because some users had a negative experience doesn’t mean you will too.

With that being said, let’s take a look at the possible side effects of some of the ingredients:

Longjack Extract

  • Insomnia
  • Restlessness

Not getting a full night’s sleep can decrease sex drive – counterproductive for a supplement claiming to increase your sex drive.

Stinging Nettle Root

Possible side effects can include:

  • Upset Stomach
  • Sweating

The site also mentions that “some evidence stinging nettle above ground parts can decrease blood sugar levels.”

Maca Extract

This ingredient is possibly safe when taken by mouth in up to three grams per day.

Maca contains goitrogens, substances that could disrupt the normal function of the thyroid gland.

L-Carnitine Fumarate

This amino acid is produced naturally by the body, but there are some potential side effects to worry about if taken in a supplement.

  • Nausea
  • Vomiting
  • Upset Stomach
  • Diarrhea
  • Heartburn

The potential side effects of products like Animal Stak are not always limited to the ingredients. If testosterone levels do rise, increased testosterone can cause serious health implications. If concerned about possible side effects of increased testosterone, or if you want to start a testosterone booster, make it a point to speak with your physician first.

Animal M Stak

Animal Stak and Animal M-Stak

Animal Stak is an overall boost of testosterone for those seeking to up their energy levels and libido while also losing fat and gaining muscle. This is especially good for people over 35 whose testosterone levels are falling.

Animal Stak also contains a hormone amplifying blend containing l-carnitine and agmatine sulfate to optimize your testosterone.

Animal M-Stak, on the other hand, is a revamped formula explicitly intended for bodybuilders and those seeking to make large muscle gains. If you need to boost your testosterone for muscle, Animal M-Stak is a better choice and leads to good body composition results.

However, contrasted with the M equivalent, Animal Stak contains zinc, magnesium, and vitamin D3. Research has shown that these three components are beneficial when wanting to increase one’s testosterone levels.

Let’s get into something a bit more positive here. Animal Stak claims to deliver a host of benefits, including:

  • Natural Testosterone Boost
  • Improved Muscle Size
  • Increased Energy
  • Enhanced Libido

While the claims are certainly there, we want to know what the customers are saying. Our research team read through dozens of online reviews and found that most users see results. This isn’t too shocking considering that some of the ingredients, like Tribulus Terrestris extract and fenugreek seed extract, do work.

Increased Muscle Mass and Strength

We review supplements, so it was a no-brainer to touch on the potential benefits this supplement can have on your muscle mass and strength.

Tribulus Terrestris has been shown to boost testosterone levels by “attenuating the luteinizing hormone or the follicle stimulating hormones” and has been shown to help increase muscle size and strength.

The Journal of the International Society of Sports Nutrition carried out a controlled trial testing Fenugreek’s effects on 49 men. It concluded that “500 mg of this proprietary Fenugreek extraction had a significant impact on both upper- and lower-body strength and body composition in comparison to placebo in a double-blind controlled trial. These changes were obtained with no clinical side effects.”

There are some well-researched ingredients in this t-boosting supplement, but it’s impossible to prove that it works beyond a couple of specific ingredients without knowing the exact formula.

So while there is some positive talk of results, most of the complaints were for the number of pills they require you to take and the company’s overall customer service.

It’s a shame – if you’re going to use ingredients backed by science, why not deliver excellent customer service and a supplement that’s easy to take?


Animal Stak Price

Animal Stak Price

Now seems like a good time to jump into the cost of this performance-enhancing supplement. It’s fairly reasonable. It sells on the official website for around $$44.95. If you purchase a subscription, you’ll receive a 10% discount which drops the price to $40.45. You can also find a variety of supplements on Amazon for around the same price.

Universal Nutrition sells this product, but unfortunately, we couldn’t find anything about free samples, trial packs, or money-back guarantees on the website.

Where to Buy

Where to Buy

Amazon.com has a wide variety of both Animal Stak and Animal M-Stak in stock.


Animal Stak Alternatives

As far as testosterone boosters are concerned, there’s no shortage of alternatives out there. If you’re looking for something in the same realm, but don’t feel like taking a handful of pills – there’s something else out there for you.

Some other t-boosters and growth hormone supplements are:

  • Mancore
  • Growth Factor-9
  • High T
  • Epistane
  • Catalyst

Always research a product before buying it – we found some minor issues with those other products, like side effects and lack of results. It’s also important to keep in mind, what doesn’t work for others could still work with you. Know your body and know your limits.

Customer Service

Animal Stak Customer Service Information

If you’d like to make a return or exchange, you’ll need to issue a “return request.” Make sure you keep your Animalpak.com order ID handy or your original receipt for proof your of purchase.

Mailing address:  Customer Service Department 3 Terminal Road New Brunswick, NJ 08901

Phone: 800-872-0101

Hours of Operation: Monday to Friday 8:30 AM to 5:00 PM

Email: info@animalpak.com, trainer@animalpak.com

Contact form: https://www.animalpak.com/contact

Website Purchases and Refunds

Animal Stak offers a “no-questions-asked” 90-day 100% guarantee on all refunds for all.

Retail Purchases and Refunds

Animal Stak does not offer exchanges, but it does offer 30-day returns for products purchased through third-party retailers. In order to get your refund, you’ll need to send an email to info@animalpak.com and complete each step of their returns process.

What Users Are Saying

What Users Are Saying

“Product is non hormonal and works better for me than the hormonal Universal product and half the cost. Very clean gains in strength and fat loss. More muscle growth than I expected. Used several times.”

“I was on these for over a year, didn’t see any progression or any meaningful gains. Snake oil product; chicken breast and spinach is more helpful.”

Bottom Line

The Bottom Line – Does Animal Stak Work?

So are we telling you to run out and buy some Animal Stak to increase your strength, testosterone levels, and overall performance? There are some key factors here that we like; for example, a couple of ingredients in the formula are effective. We also thought the price was pretty reasonable – but the buck stopped there.

We couldn’t get past:

  • Super high doses – wow
  • No scientific research on the formula – bummer
  • No money-back guarantee or discounts on the official website – ouch

If you’re ready to make some lifestyle changes to build leaner muscle and slim down those few extra pounds, we suggest a clinically-proven program.

Among the best weight-loss apps we’ve seen is one called Noom. With personalized meal plans and human coaching, you get everything you need to lose weight, make lifestyle changes and maintain those changes.

Plus, Dietspotlight readers can access a free trial offer of Noom for a limited time to give it a try.

Learn More About Noom »
Animal Stak Review
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Animal Stak

What are the ingredients in Animal Stak?

The ingredients in Animal Stak include longjack extract complex, tribulus terrestris extract, stinging nettle root, fenugreek seed, maca extract, and L-Carnitine Fumerate.

What are the side effects of Animal Stak?

You may suffer from insomnia, diarrhea, erection problems and acne when you use Animal Stak inappropriately.

Does Animal Stak work?

Yes, Animal Stak works by boosting your strength and performance while increasing your testosterone levels naturally.

What is the price of Animal Stak?

Animal Stak sells for $44.95.

Where can I buy Animal Stak?

Animal Stak can be purchased through Bodybuilding.com, GNC and Amazon.

Where can I buy Animal Stak?

Animal Stak can be purchased using their Official Site.

How should I take Animal Stak?

It is recommended to take one pack of Animal Stak capsules daily, 30 minutes prior to exercise.

Can I return Animal Stak?

They offer a “no-questions-asked” 90-day 100% guarantee. Their mailing address is Customer Service Department 3 Terminal Road New Brunswick, NJ 08901.

You can also call them, Monday to Friday 8:30am to 5:00pm EST at 800-872-0101.

Does Animal Stak have caffeine?

Animal Stak does not contain caffeine.

Is Animal Stak a steroid?

Animal Stak contains no steroids or hormones in their formula.

Is Animal Stak a testosterone booster?

Animal Stak markets itself as a “testosterone optimizer.”

34 Animal Stak Reviews

  • C Bevan (Verified Purchase)

    have taken this product at different stages in my life. Never taken sarms or steroids…..

    I am 44 y/o, and took Stak for the first time in my late 20’s, then at several points in my 30’s. It has always delivered on its promise.

    Needing to get back in shape after divorce, i’ve started taking it again and threw in some creatine (celltech) and animal cuts. Its been one week since i started…….and the muscle and strength are coming back FAST….shedding the fat is going to be a mission, but i had forgotten how effective this product can be…..honestly, muscles are getting strong, hard and toned as if i was a tewnty year old….after just a week

  • Tapering?
    Jimmy Ryan (Verified Purchase)

    Do you need to t aper off of it because of the eastrogen blockers in it so you don’t get a spike and get gyno or anything like that please?

    • Summer Banks FNS, SPT

      Hi Jimmy. We’ve found nothing that says you need to taper off Animal Stak, but contacting the customer service department would be your best bet. (https://www.animalpak.com/contact)

  • Maryam EZZ Aldeen

    I face alot of side effects on this product how i stop it before it finish ?

    • Montana (Editor)

      Hello Maryam. If you are experiencing a lot of side effects, it may be best to discontinue use and seek advice from a medical professional.

  • Connor Thiessen (Verified Purchase)

    Do you need to cycle off M stak like you do when taking prohormones?

    • Montana (Editor)

      Hello Connor. According to the website and some other customer reviews, you need to cycle off of M Stak after 21 days.

  • Rick (Verified Purchase)

    I use animal stak and get good gains makes you pump hard but you have to put the work in not just pump a few reps and think your muscles will grow train hard.

  • Major insomnia complications

    I have been taking this product for the last week, but the last two days I took it prior to sleeping and it has kept me up all night. Literally the insomnia is killing. I feel like I have been awake for over 48 hours. Do not take this if you have problems sleeping.

  • Sala (Verified Purchase)

    Love this product amd it works!

  • Dissapointed
    Yunus jeftha (Verified Purchase)

    Absolutely did nothing for me.

  • stack products
    rigo guerra

    what is the difference between all the animal stack products?

    • Marc S

      They have different goals. If you want gains its likely your test production reduces after 30 so animal stak is probably for you.stuff works great and i feel great. On top of the world. 21 day cycle then 30 days rest between.

  • I strongly feel i should test this.

    Hi, i was wondering if i can take stak on half dose ? or once every 2 days? actualy i am afraid try the full dose as i dont know what to expect from it. i have done loads of homework/research and i strongly feel i should test this first. any advice ? Thx. Kevin

    • Windycitybro

      My advice is to try’s full pack first and note the results. If you aren’t jumpy or jittery or overly irritable then imo I don’t see the harm in taking the full dosage.

      One tip though avoid any caffeine before you consume as some ingredients aren’t good with caffeine.

      If you do take caffeine I would suggest at least 4 hours after taking it. But you’ll find that you won’t need an additional pick me up as the B vitamins are more that enough for the energy you’ll need.

      Hope that helps

      • Roy Heins

        Hi, what if I take a pre workout with caffeine? Why it’s a bad combination for animal stak? Thanks

    • Maribel (Editor)

      Hi Kevin! For detailed product and usage instructions, please refer to the Animal Stak official website for more information.

  • what age

    At what age can you start using Animal Stak?

    • Maribel (Editor)

      Hello Dylan. This product is to be only used by adults 18 years and older.

  • Will animal stak gain muscle faster???

    I am a little bit chubby and I gym hard I have lost a lot of weight and wanna gain muscle now but don’t want to get any fatter….. Will animal stak make me any fatter or will I just be the same but gain muscle faster???

    • Windycitybro

      this isn’t a weight gainer so no worries. It will increase blood flow to the muscles to provide more energy and sustained workouts.

    • Maribel (Editor)

      Hello Revvan. All users are different and can experience different weight-loss results, but exercise in conjunction with a healthy diet and supplements have shown to help with weight-loss and possibly muscle gain.

  • Will this effect fertility ?

    Dear i have bought this product but still not using. because i have a little bit doubt that it can be effect my fertility. Kindly guide me before getting start.

    • Devon (Editor)

      The product doesn’t contain any soy or other ingredients known to conflict with pregnant or nursing mothers. Please take this formula to your doctor so that she/he may better advise you in this matter.

  • Is the product still safe?
    abednigo maxwell (Verified Purchase)

    hello i have bought one animal stak but did not use it right away when i opene it i noticed some of the tablets have small holes and the others got soft. is it ok to use

    • Maribel (Editor)

      Hello Abednigo! Please review the expiration date, since it is not recommended to use products after their listed expiration date.

  • edwin

    Hi. I understand from the web that it states on training days we consume at least 30 mins prior to workout and on non training days empty stomach between meals. It shows differently on the can where by on non.training days prior to bed. Would appreciate your advice on this as to which alternative would.be better. Regards

    • Veronica

      Hi Edwin. Please refer to the Animal Stak For detailed product and usage instructions. If you feel concerned, try calling customer service of the company, they should be able to explain the instructions.

  • Zyzz

    California Residents Proposition 65 warning:This product contains a substance known to the state of California to cause birth defects or other reproductive harm.This is what writes under the cover of this product?????so shoud you take this or not??????????

    • Jessica (Editor)

      Hello. All users are different and can experience different side effects; please make sure to consult with your physician before taking this product.

  • Wanna
    Marc S

    If you wanna be a full steam all out f…ing animal then animal stak is probably for you. Thank you , Thank you very much

  • May I use Animal stak or other supplement with libido?

    Dear all,

    I am 30 years old and I didnt make any body building since long time and I have noticed some decrease in my Libido and rarely morning wood, so I am planning to play body building again so I can get back my strength and get my libido back, I bought some supplement : animal stak and whey Gold standard to boost my recovery and get some extra testosterone, I still didnt use them and I need your advise, is it the right procedure?? knowing that I was really so horny guy before one year!!!

  • It contains statte to cause birth defects or other reproductive harm, I hope to start a family in the near future. What your advice would be?

    Hi I have just purchased animal stak and it says on the inside lid’ this product contains a product known to the statte of california to cause birth defects or other reproductive harm’
    I hope to start a family in the near future and this concerns me.just wondering what your advice wod be.!

  • HGH can help you to grow
    Kyle B (Verified Purchase)

    You should get the Anabolic Stack from Dr Max Powers instead. You can buy online.

    I take this b4 working out and I am stronger. If you have extra money to throw around i highly recommend the Dr Max Powers HGH spray as well. HGH can help you to grow. Everyone knows growth hormone is where it’s at! This isn’t real growth hormone but it’s a natural version of it and it works pretty good. Don’t expect huge gains but expect better sleep and slight growth. If you have extra money laying around get this. If not then get the Anabolic Stack and use it before working out. Thank you!!

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