PMD Flex Stack Hardcore Testosterone Booster Review

PMD Flex Stack Hardcore Testosterone Booster Review

PMD Flex Stack appears to offer great value as you get two bottles. It is a stack after all.

With a high price tag and a ‘hardcore’ label this had better be good.

A quick glance at the packaging reels off a long list of ingredients which initially looks promising.

LAST UPDATED: August 2019 by Ben.

PMD Flex Stack Hardcore Testosterone Booster Review First Look

This is one of those products that looks good value and specialist because it comes in 2 bottles.

Like those hardcore glue/resins that need mixing to create the strongest bond.

I am not a particular fan of this because it is nothing more than a marketing ploy.

There’s an ‘elite testosterone amplifier’ and a ‘nighttime testosterone support’.

It also carries a a high price tag, automatically we think that the product is going to be amazing.

However, this is not always the case.

Let’s take a closer look at double trouble to see how it performs.


PMD Stack Ingredients: The Science

This testosterone booster from PMD comes as a dual offering.

There’s a formula that you take during the day and a further nighttime formula, for, you guessed it…nighttime.

The fact of the matter is that there’s a lot of similarity between the two…

Read on to find out more.

Elite Testosterone Amplifier

ingredients panel pmd flex stack hardcore andro elite testosterone amplifier


Research in to fenugreek has shown us that it is capable at stimulating testosterone production, improving libido as well as having a positive impact on fat mass. [1

No wonder it is included in the best testosterone booster we have used.

D-Aspartic Acid

There’s a bit of contradictory evidence regarding DAA, however, there is some solid results that do warrant D-Aspartic Acid to be included in a testosterone booster for its hormone stimulation and fertility improvements. [2]

Dioscorea Nipponica Makino Root Extract

At best this appears to have anti-obesity effects as demonstrated on tests involving mice. [3]

However, there is very little regarding its effects on testosterone.

Androstenolone (DHEA)

This is produced naturally in the body.

It can also be made in a lab from products such as soy or yam.

When produced by your body, it acts as a precursor to testosterone.

However, taking DHEA that has been processed from soy or yam cannot be used by the body to improve testosterone levels. [4]


Ashwagandha is a herb that has been in use for centuries.

It has many uses but one of them, or two of them at least are to increase testosterone and fertility. [5]


There’s only 1 study available that demonstrated a positive effect between tribulus and testosterone.

However, every other test has been unable to replicate that result.

Tribulus doesn’t do much for hormone levels, so it is pointless being included. [6]

Safed Musli Extract

Safed seems better of as a supplement to help increase fertility in doses of 500mg.

It does show a little bit of promise for testosterone but that’s not where its strengths are.

There’s less than 500mg of combined ingredients in this little proprietary blend anyway. [7]

Avena Sativa (Oat)

In doses of 1600mg, Avena has shown promise for cognitive function. [8]

In rats, it seems that Avena has an ability to reduce toxins and thus protects the testis which can contribute to healthy testosterone levels. [9]

Bulbine Natalensis

A herb from Africa, this has shown increases in testosterone levels on rats. [10]

However, there is some evidence that it can have toxic effects on the kidneys and liver. [11]


Studies have failed to demonstrate a positive correlation between methoxyisoflavone and increased performance. [12]

Velvet Bean (Macuna Pruriens)

Mucuna pruriens has proven it has an ability to improve fertility and testosterone under test conditions. [13]

Yacon Root

Steer clear of the leaves from yacon as these may be toxic.

At present, all we seem to know about yacon is that it may improve intestinal function.

However, there’s little else we can comment on. [14]


This is brown seaweed and appears to have fat loss benefits as it has an effect on the thyroid gland. [15]

Calcium Lactate Gluconate

Being low on calcium can have a negative effect on testosterone and physical performance. [16]

However, supplementing with calcium isn’t completely free from risk, as it may harden arteries. [17]

3,3′-Diindolylmethane (DIM)

This compound can be found in vegetable such as broccoli and cabbage.

It helps prevent the conversion of testosterone to estrogen. [18]


Very closely related to DIM, ID3 can help control estrogen. [19]


In theory chrysin may be beneficial for testosterone.

However, in practice it doesn’t have a positive effect.

It is thought that the body cannot absorb it well enough.

Chrysin has only been proven to increase testosterone when directly injected in to the testicles.[20]


Widely regarded as a magic compound that is found in red wine to lengthen lifespan.

This is yet to be proven, however, it may help protect from heart disease.

There may be a some benefit to helping inhibit aromatase in breast cancer cells – the conversion of testosterone to estrogen but doses of 500mg are required daily. [21]

How it works in men is not really been under the spot light.

Agaricus Bisporus/King Oyster Mushroom

If you are an Elk here is some good news!

Including these in your diet over 80 days can increase testosterone. [22]

The slight problem being that we are not elks.

And, while these mushrooms do contain sterol molecules that are often related to testosterone, there are not any studies confirming this.


Bioperine helps your body absorb nutrients more effectively. [23]


PMD Nighttime Testosterone Support

pmd flex stack nighttime support ingredients panel

What is interesting about this PMD Flex Stack is that we have 2 products.

One for use during the day and then another set of pills for the nighttime.

I think we are to take these 3 pill prior to bed time rather than waking up during the night to take them periodically.

However, one thing to note is that there is a lot of cross over between nutrients.

As such, I shall only give a review of the ingredients that have yet to be analyzed.

Vitamin B6

The science concludes that low levels of vitamin B6 are related to low levels of testosterone and growth hormone. For rats at least. [24]


This mineral is also associated with testosterone. If you are deficient in zinc, your testosterone levels will be low. [25]

Magnesium Aspartate

Studies have demonstrated that magnesium can increase testosterone levels in athletes and non active people. [26]

Gamma Aminobutyric Acid

There a bit of evidence that points towards GABA being able to increase growth hormone rates with a combination of resistance exercise.

However, it isn’t certain that it can result in muscle growth. [27]


Melatonin is naturally occurring and usually in a response to low light conditions that help you drift off to sleep.

This is why it makes sense to be in the ‘nighttime’ formula.

While melatonin doesn’t necessarily contribute to muscle growth, your body needs good amounts of sleep to recover and grow. [28]

Passion Flower Extract

This herb is used to help reduce anxiety and insomnia.

However, there have been very few studies including passion flower by itself.

Therefore, it is difficult to see whether it has any beneficial effect.

There’s also a few risks and possible interaction with other drugs. [29]


Used for anxiety and to assist with sleep. Not many actual studies to back up the claims but thus far seems to ring true. [30]


Theanine is often found in nootropics.

There’s good reason for this.

Theanine has proven itself to be a cognitive enhancer and also neuroprotective. It should also help you relax without being drowsy. [31]

Griffonia Simplicifolia (5-HTP)

There’s not actually a large amount of information regarding griffonia.

However, there’s certainly a bit of evidence in rats that it can help reduce anxiety. This may then translate to humans. [32]


How to take PMD Flex Stack

We are instructed to take 3 pills daily from each of the two bottles.

For the day time ‘elite testosterone amplifier’ you could spread this 3 out over the course of a day. That means you will get a nice gradual amount of the nutrients and as little as possible with be wasted or flushed out.

For the ‘nighttime testosterone support’ you will need to take all 3 capsules at once.


The amplifier includes a daily dose of 2340mg

The nighttime support consists of 2854mg.

Both are fairly impressive.

However, remember there is a lot of crossover and duplication between the nutrients. As such, there’s not a huge amount of difference between the two formulas.


This is a substantial product with a hell of a lot of ingredients.

Yet not all of them offer much value.

The first bottle, known as the ‘Elite Testosterone Amplifier’ contains 20 ingredients.

Half of which are useful. Items such as Fenugreek, D-Aspartic Acid, Mucuna Pruriens, Calcium (not without risk though as a supplement), DIM/Indole-3-Carbinol have a beneficial effect for reducing estrogens and promoting testosterone. The Bioperine will aid absorption too.

Makino extract appears to have anti-obesity effects in studies on mice, whether this will translate in to humans is another matter

In the second bottle named ‘Nighttime Testosterone Support’ contains 15 ingredients, yet 7 are just repeated from the first bottle.

That said, B6, Zinc and Magnesium are good for testosterone levels.

Melatonin, Chamomile, L-Theanine, 5-HTP all appear to have studies that prove or at least suggest that they can help improve relaxation.

Side Effects

There are a few ingredients included in these two formulas that cause a little concern.

Bulbine does appear to be quite potent and may have a negative effect on organ health, particularly the liver and kidneys. [33]

The leaves of yacon could be toxic to the liver.

And, too much yacon itself may cause diarrhea. [34]

While calcium is great, taking it in a supplement form can cause hardening of the arteries which could then lead to heart and cardiovascular issues.

It is much better to get calcium through foods.

Furthermore, too high calcium supplementation can have a negative effect on the absorption of zinc and magnesium. [35]

It has been noted that high doses of passionflower has been associated with dizziness and confusion. [36]


This is where matters get interesting, because for all of the parts listed good, there are many areas which this really fails.

Firstly, both formulas consist of proprietary blends which limits the transparency of each. And, if I am honest, after paying $200 for the two I want to know exactly how much of each ingredient is included.

Furthermore, there’s so many ingredients that have no proven benefit, or there’s a real lack of prove including humans.

What may work for an Elk or a mouse may not always transfer to people.

However, it does not end there.

Another issue are the doses.

When studies are complied and published very specific amounts of ingredients are used, and reported.

Just because they are ‘included’ doesn’t necessarily mean they will have an effect.

Then you have ingredients such as Bladderwrack which may not be safe to take orally plus Bulbine which is as toxic as a cycle of steroids.

Not to mention the doses of Zinc, B6 and Magnesium which appear to be dosed around 50% less than a decent ZMA supplement.

Notwithstanding the D-Aspartic Acid which requires a further 2000mg to be effective.

It is worth mentioning that this is $199.99, that is nearly 4 times the price of what I consider to the best testosterone booster available.

Therefore, while on aper the nutrient profile may look full and extensive, the reality is there are low doses, hidden doses and ingredients that are lacking real evidence.

PMD Flex Stack Conclusion

I feel that this product acts as a dragging trawler net.

It has a wide range of ingredients which some may recognize and therefore purchase it.

Ie. if you cast the net wide enough it will catch enough customers to make good money.

However, for all of the positives there are many more harsh negatives.

I for one do not want to take a oral supplement which contains toxic ingredients, nor do I want to waste money on doubling up on ingredients, ingredients that do not work and ingredients that are at ineffective doses.

And, we are talking real money here at nearly $200.  It is not effective enough at all to be even a fifth of that price.

Take a look at what works to maximize your workouts.






































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PMD Flex Stack Testosterone Booster
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Ben BA(Hons), PGCert

Ben established this site to be a free resource in 2015. Since then it has gained over half a million visits. He has always been interested in sport and he started playing rugby at the age of 6 represented his town, county and school. Ben also enjoys cycling, has started skiing and is in the Army Reserve representing his Regiment as part of the 150 Regimental Shooting Team. He holds a bachelor's and postgraduate degree in sport exercise & nutrition.

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