Animal Stak from Universal Nutrition claims to be the complete anabolic support vitamin stack. I took a deep look at its ingredients to see how it stacks up against the other testosterone boosters reviewed on this site.
Animal Stak Review
If you want to save some time, here is my decision, followed by my full analysis below.
Decision: Not Recommended
My Score: 2 out of 5
Reason: Does not contain D-Aspartic Acid; which is a crucial ingredient in any test supplement to increase testosterone levels. Not containing this ingredient is pretty much a non-starter for me.
Ingredients
Here’s an in-depth look at the ingredients that make up the formula for Animal Stak and what each of them does for the body.
Vitamin C
Vitamin C is an essential vitamin that is important in ensuring cells are protected against stress and damage. When sticking to a regular workout routine, heavy on weight training, muscle strain and fatigue are very common and an ingredient like this is essential.
Vitamin B6
Vitamin B6 plays a crucial part in estrogen level control and increases in testosterone production.

Magnesium
Magnesium is a basic requirement for proper enzymatic activity associated with cellular processes, especially those that help with nerve health and muscle fatigue. These are fundamental in the event that you are performing overly-strenuous exercises.
Natural Flavone/Sterone Complex
Animal Stak contains a natural flavone/sterone complex that sorts and partitions supplements. It helps to carry calories to lean muscle mass rather than the fat deposits in your body, which in turn, boosts your muscle growth and helps you burn fat at a faster rate.
Anabolic Adaptogens
This is a complex of ingredients that slow down muscle cell degeneration by enabling your muscles to better handle the stresses of lifting heavy weights. This incorporates cortisol blockers which diminish the concentrations of cortisol, the hormone created when the body is under stress.
Anti-catabolic Amino Complex
This complex is intended to help the development of more muscle,, which will additionally lead to an increase in strength due to the optimization of the protein balance in the body.
Side Effects
The selling point of this supplement is that it doesn’t contain steroidal hormones, reducing the probability of adverse reactions. Irritability and discomfort are some of the side effects most commonly reported by users of this product. Some users also report that they experienced sleeping problems, especially when cycling on and off this supplement.
Where to Buy
Animal Stak can be purchased on bodybuilding.com here.
Recommendation
With the lack of some of my most sought-after ingredients when it comes to making a solid testosterone booster, I can’t give this product my endorsement. If you’re looking for the t-boosters that I personally use and love, definitely take a look at these two (my highest recommendations):