Animal Test is a test-booster supplement made by Universal Nutrition.

It’s designed to increase size and strength by improving testosterone levels.

Universal Nutrition was founded in New Jersey, USA, in 1977.

Ingredients Label

Active Ingredients

Urtica Dioica

Urtica Dioica is the scientific name for the stinging nettle plant.

It contains compounds that could increase testosterone and prevent it from turning into DHT, but current studies aren’t too promising (1, 2).

Cissus Quadrangularis

Cissus Quadrangularis is a traditional herb which has shown benefits for join and tendon health (3).

This ingredient, along with arachidonic acid, may be included here to alleviate the joint pain that some people experience with aromatase-inhibitors.

Resveratrol

Resveratrol is a compound found in grapes and red wine.

Its main benefits include increasing blood flow and insulin sensitivity, but it may also reduce the production of oestrogen (4).

Hesperetin and Agaricus Bisporus

Hesperetin and Agaricus Bisporus (white button mushroom) are “aromatase inhibitors”, which have both been shown to reduce oestrogen levels (5, 6).

Yohimbe

The bark of the Yohimbe tree is most commonly used as a fat-burner.

Despite having some aphrodisiac and pro-erectile properties, studies have shown that it doesn’t influence testosterone (7).

Grapefruit and Piper Nigrum

Grapefruit and Piper Negrum (black pepper) extract are both included to enhance the absorption of the other ingredients.

Who Takes It?

Athletes wanting to improve strength and size by boosting their testosterone levels may benefit from using Animal Test.

How to Take

Take a single pack each day, for 21 straight days.

Side Effects

You may experience changes in mood, aggression, and sex drive.

Yohimbe may trigger anxiety in those with pre-existing issues.

Pros

A big mix of oestrogen-reducing ingredients
Joint health support

Cons

No ingredients for direct increases in testosterone
Resveratrol can be counterproductive to muscle gain when taken around workout time

Conclusion

Animal Test is a test-booster that focuses on aromatase inhibition, rather than increasing testosterone levels directly.

It may work well for reducing oestrogen and DHT levels, but some of these ingredients have very weak evidence for their effectiveness.

The joint health support is a nice touch, though, and is often required with products like this.