American Metabolix Muscle Test Review

Overall Rating:


Positives Negatives
  • Contains Fenugreek, Stinging Nettle, L-Dopa
  • Poor Servings
  • Ineffective Ingredients
  • Proprietary Blends

Review Overview – What does American Metabolix Muscle Test do?

Manufactured by American Metabolix, this all natural testosterone booster is a supplement claimed to promote:

  • Energy
  • Testosterone
  • Muscle Mass
  • Strength


But how well does it really work?

From this review, we look closer at Muscle Test to see how effective it really is.

This is what you need to know:

How are the servings?

Could be better.

With only 2 servings a day, this isn’t your best option.

For the best results you need 3 – 4 servings a day, this gives your body that constant supply of nutrients it needs to boost testosterone throughout the day.

With only a few servings a day, there’s too much of a gap between servings to keep testosterone constantly on the rise.

What about the ingredients in Muscle Test?

Not the best.

The main problem here is the huge amount of proprietary blends in this product.

This is when numerous ingredients are grouped together under the same dosage.

You don’t know how much of each nutrient you’re getting, or how effective it will be overall.

Not only that, there’s a potential for side effects.

This is what you need to know:american-metabolix-muscle-test-side-effects


One of the poorer testosterone boosters on the market.

Although heavily marketed as natural testosterone booster the studies behind this nutrient are severely lacking.

There have been no reliable studies to show Tribulus as a testosterone booster, at most it may only give a minor boost to libido.


One of the better options to boost testosterone levels.

Fenugreek has been seen to increase libido – but it can also help regulate blood sugar.

By regulating blood sugar, Fenugreek can help lower insulin levels which can help to improve testosterone.

This is because insulin can directly effect and lower T levels.

With less insulin, more testosterone can rise.

Tongkat Ali 

A poorer option.

Also known as LongJack, this is a nutrient that was thought to help raise testosterone levels – it has never been seen in studies.

It is not effective to raise the male hormone, at most it may only help libido.

Oat Extract 

Also known as Avena Sativa. Thought to help promote testosterone, although studies have shown it’s actually not that reliable.

It’s unlike to improve T-levels.

Diindolylmethane (DIM) 

Another nutrient, this one is usually found in brocolli and may reduce estrogen levels.

However there is not much evidence for DIM to actually do this.

It looks promising, but no results have come forward.

Green Tea 

More of a fat burner than a testosterone booster.

Studies have shown that using Green Tea can promote norepinephrine – the fat burning hormone.

It’s a good addition for anyone looking to lose weight and may help shift a few unwanted pounds.

Rhodiola Rosea 

A better option for mood.

As both an anti depressant and anti anxiety, Rhodiola has been seen to promote overall feelings of well-being.

This helps with both mood and focus, allowing you to focus more on your training.

Bitter Orange 

A poorer option, and not a testosterone booster.

Bitter Orange Extract, also known as Synephrine has been thought to promote fat loss and energy – however, studies have shown otherwise.

In reality it does very little to promote fat loss, and may even cause side effects.


A herb that helps reduce overall stress, which could indirectly promote T-levels.

Ashwagandha reduces your body’s levels of the stress hormone cortisol – which has been seen to interfere directly with testosterone.

The less C you have, the better.


An anti stressor.

L-Tyrosine has been seen to promote hormones like dopamine and serotonin.

This doesn’t help such with testosterone, but it can help improve overall mood, which can help with motivation and focus.

Velvet Bean/L-Dopa

A better choice.

Also known as Mucuna Pruriens, the L-Dopa in this nutrient has been seen to promote dopamine and lower cortisol.

Stinging Nettle 

A good option for free testosterone.

Stinging Nettle has been seen in numerous studies to help inhibit Sex Hormone Binding Globulin (SHBG).

This is the protein that binds to testosterone and strips it of its anabolic potency.

With more SHBG inhibited, less testosterone is effected, more can circulate in your system.

Deer Antler Velvet

One of the worst nutrients in the industry.

Used mainly for its exotic nature (it’s the furry skin on deer antlers) and believed to promote virility.

However studies have shown it has no effect when it comes to testosterone.

It’s not a good option.american-metabolix-muscle-test-results

Ingredients Bottom Line:

On the whole, this isn’t the best nutrient profile you can find in a T-booster.

It’s extensive, but it’s not that effective.

Many of the nutrients used fall under proprietary blends – you don’t know how much of each ingredient is being used, or how effective they’ll be overall.

Not only that, many of them lack the clinical studies to support that they work at all.

And others have even been seen to cause side effects.

It’s not a good option.

Side Effects

Your main risk here is the Bitter Orange Extract/Synephrine.

It’s been seen in numerous studies to cause side effects including:

  • Headaches
  • Nausea
  • Increased Heart Rate
  • Risk of High Blood Pressure
  • Dizziness

It’s not an option you want to consider while looking to boost testosterone.

Is there anything better than this Testosterone Booster?

There absolutely is.

We’ve done the research, and looked far and wide for the best supplements on the market that promote:

  1. Muscle Gains
  2. Fat Loss
  3. Testosterone Levels
  4. Energy
  5. Mood
  6. Sex Drive

And it we’ve finally narrowed it down to just three.

These are the best testosterone boosters on the market, that both myself and our readers agree provide the best results. You can check them out below:

The 3 Best Testosterone Boosters

American Metabolix Muscle Test Review Conclusion

On the whole, this isn’t the best testosterone booster on the market.

From this review, here’s what you need to know about Muscle Test: 

  • Servings could be better – With only 2 servings a day, there is not enough to boost testosterone throughout the day. 
  • Proprietary Blends – You don’t know how much of each ingredient is being used, or how effective they’ll be overall. 
  • Potential Side Effects – Several of the nutrients in this product are ineffective and may cause side effects.

As you can see, it’s not your best option.

To see what our readers, and our editor, have voted as the most effective testosterone booster – check out our full official review of the current #1 testosterone booster. Read it all in the link below:

Our #1 For Boosting Testosterone - TestoFuel

Out of all the T-Boosters I've tried, TestoFuel is the best for Maximum Muscle Gains.

It also:
- Added Strength
- Cut Body Fat
- Boosted My Energy

I took it for 3 Months and I saw some INSANE results!


Review Date
Reviewed Item
American Metabolix Muscle Test
Author Rating