Met RX ZMA Support Supplement Review
Home » Met-Rx ZMA Support Formula Review: Is it Any Good?

Met-Rx ZMA Support Formula Review: Is it Any Good?

Met-RX ZMA Summary










The Good

  • Zinc comes in a highly bioavailable form
  • Cheap - $14 for 30 servings
  • Might help you with sleep.

The Bad

  • Missing a lot of core ingredients
  • Cheap form of magnesium oxide and synthetic vitamin B6 don't absorb very well
  • Ineffective for testosterone and muscle recovery

Met Rx ZMA Review – The Basics

Met RX ZMA is a popular health support formula for men and women. It comes in bottles of 90 capsules and you’re supposed to take 3 of them per day with your meals. By doing so, we’re promised the following benefits:

  • Support your muscle recovery
  • Boost your immune system

Although Met RX ZMA is designed for both genders, men could benefit from it even more due to some of the ingredients in this product. This includes zinc which is known for its effect on male testosterone levels and muscle strength building.

Since it’s a standard ZMA formula, meaning it contains magnesium, zinc and vitamin B6, it’s also supposed to help you sleep better. But how good is it at doing its job? Let’s take a closer in this Met-Rx ZMA Support Formula Review look to find out!

The Ingredients

One thing you’ll notice about Met RX ZMA’s ingredients is that they’re fully transparent. Their doses can be clearly seen on the label, which allows us to assess them for safety and effectiveness.

However, one thing that stuck out to us about this product (and not in a good sense), is how ineffective some of its ingredients are. They come in cheap and synthetic forms which makes their absorption in the body very low.

Not only that, but it’s missing some essentials that would make it more effective at doing its job. Which is, boosting natural testosterone, improving sleep, and enhancing muscle recovery.

Vitamin B6 (as Pyridoxine Hydrochloride)

Vitamin B6 is a basic yet essential ingredient for our overall health.

If you’re looking to stay healthy, then you need to ensure you’re getting enough of it every day. Why every day, you ask? Because vitamin B6 is water-soluble and your body excretes it through urine. It doesn’t store it. (source:

As a result, you need to keep taking it otherwise you could become deficient fast, which can result in poor sleep quality, low testosterone levels, and slow recovery from training.

There’s just one problem with vitamin B6 in Met-RX ZMA – it comes as a synthetic Pyridoxine hydrochloride. Some people can’t absorb this form of vitamin B6 very well – a more bioavailable option is vitamin B6 as pyridoxal-5-phosphate (P5P).

Magnesium (as Magnesium Citrate and Magnesium Oxide)

Another poor form of nutrient in Met-RX ZMA. Magnesium is an essential mineral for muscle and nerve relaxation, and it also helps synthesize neurotransmitters such as serotonin and GABA which play an essential role in sleep and recovery.

But it comes as magnesium oxide and magnesium citrate, which have low bioavailability. Aka, you pass most of it down the toilet. Magnesium oxide is the worst, it can also cause diarrhea at doses as high as those in Met RX ZMA.

Magnesium citrate is absorbed a little better, but you’d need 2-4g of this stuff per day to get the benefits. 400mg per serving is not enough.

You can find out more about magnesium here:

Zinc (as Zinc L-Monomethionine and Zinc Aspartate)

This ingredient is much better. Zinc L-Monomethionine and Aspartate are both highly absorbable forms of this essential mineral.

Your body needs zinc to get to sleep. It also needs it to produce sleep-inducing and relaxing neurotransmitters such as GABA and melatonin. Zinc also keeps your hormone levels in check by reducing the effects of stress on your body. See a study discussing this particular benefit here:

It’s a great bodybuilding ingredient all in all.

Anything Missing?

The ingredient forms aren’t optimal, but this should be enough to help you with sleep.

That said, if you’re looking for things like faster muscle recovery, better workouts, and increased testosterone, then Met RX ZMA is not for you. You should look into a supplement that’s better equipped and has more ingredients.

Our favorite ingredients for testosterone that are missing from MET-RX ZMA include:

  • Vitamin D
  • Ashwagandha
  • Rhodiola Rosea
  • Vitamin K2

How to Use Met Rx ZMA (Dosage Instructions)

According to the instructions label, you should take 3 capsule of Met-RX ZMA daily with your meals. You should avoid taking it with foods that contain calcium, because it interferes with the absorption of zinc and magnesium.

Obviously, the best time to take Met RX ZMA would be before eating your last meal of the day. Or before going to bed. However, if you need any advice, make sure to speak with a qualified professional.

Side Effects

ZMA formulas are generally safe. The risk of side effects mostly depends on two things: dosage and types of ingredients used.

In terms of dosages, everything looks alright with Met-RX ZMA. The only issue might be that it’s all taken at once. For example, magnesium is 400mg per serving, which can easily cause diarrhea. Zinc is also pushing it with its 30mg per serving, which is 200% of your daily RDA. One more reason to make sure to take this supplement with a meal, otherwise you may experience really bad stomach pain.

As far as ingredient forms are concerned, we’ve covered that already, but generally speaking, it’s not looking too good. Magnesium oxide only further increases the risk of diarrhea and cramps, while vitamin B6 comes in its synthetic form and is generally not recommended for health-conscious individuals.

Price and Value for Money?

Met-RX ZMA comes in bottles of 90 capsules. Taking the recommended 3 per day means it will last you through a month. And the price tag for this is around $14, depending on where you buy it.

It’s an OK price, but the value isn’t the best. Magnesium should come in at least in 100% citrate form. Oxide is the worst and the cheapest, and offers almost no benefits for the human body (unless you’re constipated, then gulping this stuff down will be of real help!).

Even if it’s not much, any money is wasted money if the product doesn’t work. That’s how we look at it anyways.

Pros and Cons

So here are some key things to take away from this Met-Rx ZMA Support Formula Review.


  • Zinc comes in great, highly bioavailable form
  • Might help you sleep a bit better


  • Magnesium comes in oxide and citrate, two of the least bioavailable forms
  • Vitamin B6 comes in a synthetic form that may not be absorbed well by some individuals
  • Not powerful enough to support testosterone or muscle growth
  • Although cheap, it’s not the best value for money, considering what it offers

Conclusion to Met-Rx ZMA Support Formula Review

That concludes our Met RX ZMA review. Is it the best support supplement we’ve seen? It’s not, but it could be decent if all you’re looking for is better sleep. In that regard, zinc and vitamin B6 combination could help you.

The magnesium in this supplement is of the lowest quality possible, which puts its effectiveness into question. It’s also missing some core ingredients that would make it better at improving muscle strength & natural testosterone production.

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