PhD Test Matrix Review – Does It Deserve Its Popularity?

Test Matrix






Value For Money



  • Best ingredients dosed low
  • Some ingredients are useless for low testosterone
  • DIM may increase aromatase action



Full PhD Test Matrix Review


PhD only only started appearing on the shelves about 4 years ago, but they have now established themselves as one of the leading supplement manufacturers in the world.

Their protein powders, pre-workouts, and other bodybuilding supplements can now be found in most major supermarkets, let alone in the leading supplement stores.

So it was just a matter of time before we did a proper PhD Test Matrix review.

Before we get going, let’s look at what this testosterone booster is supposed to do?

How does it sell itself?


PhD Test Matrix Review


If we take a look at the product box, we see that PhD Test Matrix is described as a “powerful formulation for men only”.

It claims to be a “potent testosterone booster”, utilizing a “precision micro-nutrient matrix”.

According to the official website, users of PhD Test Matrix can look forward to:

  • Serious muscle mass gains
  • Increased strength
  • Better use of protein

The last benefit is really interesting. One of the consequences of increased testosterone levels is better nutrient partitioning.

Put simply, the higher your testosterone levels, the more efficiently your body uses your food; the more efficiently you push protein and glycogen into your muscles, and the faster you turn to body fat for fuel.

According to PhD, Test Matrix is designed specifically males aged 18 and over who are also:

  • Body builders and strength athletes
  • Athletes seeking effective testosterone support
  • Anyone eating a high protein diet
  • Great for team sport participants who require strength and lean muscle mass

This sounds like a very interesting supplement.

But we’ve heard all this before plenty of times.

Does PhD Test Matrix actually deliver?

Or is it another bogus dud test pill?

Is PhD Test Matrix safe?

How does it compare to the current market leaders?

Let’s find out. We’ll start our PhD Test Matrix review by looking at the ingredients, how they are dosed, and the potential risks they expose you to (if any). We’ll then look at the product as a whole and tell you if we think it’s any good or not.


PhD Test Matrix Formula

Here is the PhD Test Matrix formula:


PhD Test Matrix formula


As we expected from such a reputable manufacturer, this is a unique and interesting supplement.

We’ve never seen this combination of ingredients before.

There are definitely some ingredients in here that we don’t normally see in natural testosterone boosters.

And there are some scientifically proven, effective test boosters in there.

However, on the whole, we think this looks like a pretty average stack as far as potency goes.

This stack doesn’t look like it’s going to give you the same results as some of the other stacks on the market today.

Some of the ingredients aren’t very effective.

It is missing some ingredients known to be powerful test boosters.

In all, not perfect, but certainly not a terrible supplement.



What We Like

First off, there are some really good ingredients in PhD Test Matrix.

In each serving, we get 550mg of D-Aspartic Acid.

D-Aspartic Acid is, in our opinion, a necessity for any natural test booster worth its salt.

Supplementing with D-AA is one of the most effective ways to stimulate your own natural testosterone production.

Basically, D-AA stimulates the release of Luteinizing Hormone, which in turn tells your testes to start pumping out more testosterone.

This effect has been proven through various clinical investigations. Indeed, of all the ingredients commonly found in natural test boosters, D-AA is easily one of the most strongly supported by science.

D-AA does not usually cause side effects of any sort, and it is relatively cheap to add into a stack.

The only problem here is the serving size.

To get a noticeable benefit from D-AA use, you really need to be using upwards of 1,500mg per day.

Even then, you will only be getting significant results if you are using a high quality, readily absorbed form of D-Aspartic Acid.

We just get regular D-AA in PhD Teat Matrix, so the 550mg doesn’t come close to meeting our expectations.

This is a real shame for such a potentially great ingredient.


PhD Test Matrix ingredients D-Aspartic Acid


We also see that PhD Test Matrix contains Boron. 10mg of the stuff to be exact.

Boron is a seriously under-utilized natural testosterone booster. But that wont be the case forever as more people realize its potential.

Multiple studies have found that Boron intake influences free testosterone levels.

Basically, what happens is that Boron reduces the presence of Sex Hormone Binding Globulin, which usually binds to testosterone and renders it useless.

As this study found, Boron supplementation reduces SHBG after just 6 hours of supplementation.



What We Don’t Like

There are some pretty big drawbacks to the PhD Test Matrix formula.

One big issue that jumps out at us is the use of Diindolylmethane, or DIM as it is usually written.

DIM is thought to be a potential aromatase inhibitor. An aromatase inhibitor is something that suppresses testosterone to estrogen conversion.

There isn’t much evidence for this at all, but some people remain hopeful.

However, the lack of evidence isn’t even our main concern.

Our primary concerns about DIM are 1) the fact that it is found naturally in things like broccoli, which you should be eating anyway, and 2) the fact that it has been shown to INCREASE aromatase activity at higher doses.

Look at it like this:

There isn’t any solid evidence that DIM does act as an aromatase inhibitor.

If it does, then you can get plenty from sprouts, turnips, broccoli, red cabbage, kale, etc.

There is evidence that higher doses can increase aromatase activity. What that “higher dose” is will vary person to person.

So since there is no solid evidence that it works, but there IS solid evidence that it works counter to your needs, why take it?

Why take this substance, with such a high potential for backfiring, when there are other substances that definitely suppress estrogen conversion?

Why take that risk for a substance that may not do anything anyway?

Why include something found in such abundance in common vegetables?


DIM useless PhD Test Matrix ingredients


That isn’t the only confusing ingredient thrown into PhD Test Matrix.

We see that each serving contains 30mg of Phosphatidylcholine.

This stuff is usually found in brain and memory pills, not bodybuilding supplements.

It is an important compound for brain function, but unless you’re trying to fight memory loss, there is no reason for you to take it.

There is certainly no reaosn to take 30mg; the standard dose is well over 100mg per day.

There are other unwanted additions to the PhD Test Matrix formula, but for the sake of space we wont go into them here.

We encourage you to do your own research on each ingredient thoroughly before making a decision.


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PhD Test Matrix Side Effects

As mentioned above, DIM is known to potentially work counter to its intended purpose.

Taking too much in a single dose can induce aromatase, rather than suppress it.

That would mean more of your free testosterone being converted to estrogen.

For a natural testosterone booster, this is a major flaw.

If there is one product that can’t afford this risk, it’s a product designed to elevate free testosterone.

Overall though, we think the side effect risks here is low.

The ingredients used aren’t known to cause serious health risks, and the doses all look reasonable.

But as always, you need to be awr ethat this is not professional medical advice.

It is crucial that you talk to a qualified doctor about your plans to use PhD Test Matrix before you start doing so.

We urge you to talk to a proper doctor before you use any natural testosterone boosters. Just because they look safe for most people doesn’t mean they are 100% safe for you. Your doctor knows your body so only he or she can advise you.


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PhD Test Matrix Review Summary – Should You Buy It?

We started our PhD Test Matrix review with the assumption that this would be a pretty solid stack.

We were sadly wrong.

This isn’t a scam supplement by any means.

It isn’t completely useless.

But it doesn’t come close to the current market leaders in terms of potency, scientific pedigree, or value for money.

Low dosing, impotent ingredients and potential for backfire combine here to make a fairly disappointing testosterone booster.

In case it isn’t obvious, we’ll state it clearly: you can do much better.

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