Animal Stak vs TestoGen (Which is Better?)

Are you looking for a supplement to help boost your testosterone levels? Well, Testogen or Animal Stak may be the right one for you.  

But which one is better? Keep reading for everything you need to know about the two supplements so you can decide which one is best for you. 

Our Pick

TestoGen is the clear winner due to its superior ingredients formula & established track record of results. 

TestoGen vs Animal Stak Ingredients Comparison    

Let’s compare the ingredients in the two supplements. 


Testogen contains D-aspartic acid which has been found to increase testosterone levels, with one study  proving that the amino acid can boost testosterone by 42% after just 12 days of supplementation.  

D-aspartic acid works by stimulating production of testosterone from the Leydig cells in the testes. 

Testogen also contains fenugreek extract, which contains compounds called furostanolic saponins which are thought to inhibit enzymes that convert testosterone to oestrogen.  

Fenugreek extract is also believed to increase energy, improve strength, and boost libido.  

Testogen contains Korean Red Ginseng extract. This has been proven by scientific research to boost libido by 29%, increase sexual satisfaction by 33%, and reduce erectile dysfunction by 60%. 

Finally, Testogen contains nettle leaf extract which has been shown to boost the levels of free testosterone in the body. 

Animal Stak 

The first thing to note about Animal Stak’s formula is that it is made from proprietary blends. This means the dosages of each ingredient used are unknown.  

Animal Stak contains Longjack extract, which studies have found reduces stress, improves mood, and can aid in exercise training and dieting. 

Another ingredient of Animal Stak is Tribulus Terrestris, which is known for enhancing athletic performance and helping bodybuilders reach their muscle gain goals.  

Tribulus Terrestris has also been found by studies to improve heart conditions. 

Finally, Animal Stak contains stinging nettle root which people believe to be antibacterial and can help with urinary issues.  

In terms of its ability to boost testosterone, studies have found that stinging nettle root can increase levels of free testosterone by attaching to sex hormone binding globulin, SHBG, which is an inhibitor of testosterone.  

By attaching to SHBG, stinging nettle extract stops it from being able to inhibit testosterone production, so levels of the sex hormone can remain high. 


Testogen wins when it comes to ingredients.  

Both supplements contain completely natural ingredients which have scientific evidence backing their effectiveness.  

However, the fact Animal Stak uses proprietary blends and the dosages of the ingredients are unknown could bring risk to people’s health and safety.  

Our Pick

TestoGen is the clear winner due to its superior ingredients formula & established track record of results. 

Safety and Potential Side Effects 

Let’s consider the safety of both supplements, including whether they are FDA approved or not. 


Testogen is FDA approved, and therefore there are no known side effects of the supplement.  

However, as with any food or supplement, you could experience an allergic reaction to this booster.  

Other reported, but very rare, side effects of Testogen include headaches, nausea, and indigestion. 

Animal Stak 

Animal Stak is not FDA approved, and therefore you might experience some side effects from the supplement.  

Common side effects reported by customers include sleeping issues, erectile dysfunction, acne, and diarrhoea.  

Whilst all the ingredients used are completely natural, they do come with their own side effects. For example, longjack extract might cause restlessness, and stinging nettle root could lead to an upset stomach or sweating. 

Everyone is unique and might react differently to certain supplements. Therefore, the best option is to always check with your doctor or physician before using Animal Stak.  


Testogen is the clear winner in this battle as it is FDA approved with no known side effects. 

Customer Results 

Looking at the customer reviews is a good way to see if the supplement works. Let’s see what has been said about Testogen and Animal Stak. 


In the customer reviews of Testogen, people reported having a major boost in energy. They said they could work out more frequently with a significantly reduced recovery time.  

People reported feeling more confident after using Testogen, and that they were able to perform better in the bedroom.  

There were very few negative reviews on Testogen, however a couple of people said that they didn’t notice any changes after using the supplement. 

Animal Stak 

There is a real variety of reviews on Animal Stak, with some people saying they have seen great results, and others seeing no change, or even negative change.  

There were a few comments from customers saying they saw an increase in their muscle mass after using Animal Stak and that it helped them train harder in the gym. Customers said they could lift heavier weights and workout for longer. 

Others said how it helped them to lose weight, with one customer reporting losing 25 lbs after just one month of using the supplement. 

However, one user said they experienced a horrific allergic reaction after using Animal Stak, and another said it led to them sweating excessively. 

There were also multiple reviews of the product not working or creating any changes. Someone even said they found they couldn’t lift as much as they usually could. 


Testogen wins in this category.  

There were many more negative reviews for Animal Stak than there were for Testogen, and the fact some people saw their fitness decline after taking Animal Stak is a major concern. 

Manufacturing and Brand 

Who manufactures these two supplements? Are they reliable? Let’s take a look. 


Muscle Club Limited are the manufacturers of Testogen. They work in both the United States and the United Kingdom.  

As mentioned earlier, Testogen is FDA approved, as are the manufacturing facilities in which it is made. This puts a lot of confidence in the quality of the supplement.  

Furthermore, Muscle Club assures that Testogen contains only natural ingredients with no filler, gluten, chemicals, dairy, soy, or genetic modification.  

Animal Stak 

Animal Stak is manufactured by Universal Nutrition. They are a company based in New Jersey and are known for making legal, safe substitutes to steroids.  

However, there was very little research on the safety of the manufacturer and their facilities, other than the fact the product itself is not FDA approved.  

The company also says how any statements they make on their supplements have not been evaluated by the FDA, and that the product is not intended to cure, treat, or diagnose any illness. 


Testogen wins here.  

The manufacturers of Testogen have facilities that are FDA approved, and they assure that their product is 100% natural with no artificial additives.  

The manufacturers of Animal Stak, on the other hand, have no FDA approval and the quality of their ingredients and production cannot be guaranteed. 

Price and Value for Money 

Let’s compare the price of the two supplements, and which is considered better value for money. 


For a one-month bottle of Testogen, it will cost you $59.99.  

If you order multiple bottles in one order, you will get a discount. Ordering 3 months of Testogen at once will cost you $119.99 ($40 per bottle), and 5 months in one order will cost you $179.99 ($36 per bottle). 

You get free shipping if you order at least two items.  

Testogen also offers a 100-day return policy, so you can get a refund in this time if you are not happy. 

Furthermore, Testogen even offers bundles where you can receive free eBooks of workout guides and recipes with every order. 

Animal Stak 

For a one month’s supply of Animal Stak it will cost you $39.99, which is one of the more affordable testosterone supplements on the market. 

However, we couldn’t find anything on the company’s website about a return policy, free samples, or discounts. 

You can purchase Animal Stak on their official website or on Amazon. 


Testogen wins in this category.  

It is a very close call, as Animal Stak technically has the cheaper price tag. However, if you buy in bulk then you save a considerable amount with Testogen and the price per bottle will be the same, or even less, than that of Animal Stak.  

Furthermore, the long return policy and provision of eBooks is what makes Testogen take the lead. 

Pros and Cons 



  • FDA approved 
  • No known side effects 
  • Offers eBooks with purchases 
  • 100-day return policy 
  • Boosts energy and stamina 
  • Boosts libido 
  • Manufactured in FDA approved facilities 


  • Some people haven’t seen results from the supplement 
  • Can be quite expensive 

Animal Stak 


  • Affordable 
  • Ingredients backed by research 
  • Some positive customer reviews 
  • Enhances athletic performance 
  • Aids in weight loss 


  • Not FDA approved 
  • No information on return policy 
  • Some people saw decline in health and fitness after taking 
  • Many negative reviews 

Animal Stak vs TestoGen – Final Verdict 

Testogen beats Animal Stak in this booster battle.  

The main winning factor is how Testogen is FDA approved and Animal Stak is not. This immediately puts more confidence in the safety and effectiveness of Testogen. 

Testogen can be a little more expensive than Animal Stak when not bought in bulk, however with the longer return policy and provision of eBooks with Testogen, you are definitely getting what you pay for. 

There are many more positive reviews of Testogen than there are of Animal Stak, and the decline some people saw in health after taking Animal Stak is very concerning and puts it very low on the list of best boosters.  

Our Pick

TestoGen is the clear winner due to its superior ingredients formula & established track record of results.