Quick Take: If you’ve been into fitness for any given time, chances are you’ve come across several ZMA or nighttime testosterone boosters and Bodybuilding, the company and the website, has manufactured their own. I like that it keeps thing simple and follows the blueprints of a historical ZMA formula but this strategy also come with its share of negatives. Nonetheless, will it be effective on YOU? Let’s get to the Signature ZMA review and find out.
- Signature ZMA is one of a few products in Bodybuilding’s Signature line of supplements
- Advertised for muscle recovery and restorative sleep
- Uses the same exact formula as the original ZMA blend. No extra fluff added.
- Probably not for everyone but it does work on most men and women. I have the reasons detailed further down below.
- I feel like Signature ZMA is best paired with another, more powerful testosterone booster that you can take during the day.
- Available to buy only on Bodybuilding [.] com’s website
Signature ZMA Ingredients
|Vitamin B6 (As Pyridoxine HCl)||10.5 mg|
|Magnesium (As Magnesium Aspartate)||450 mg|
|Zinc (as zinc mono-l-methionine and zinc aspartate)||30 mg|
Signature ZMA – Ingredients Review
Vitamin B6 – According to rat research, B6 depletion may lead to lower levels of testosterone. Hence, making sure you get adequate amounts of this vitamin might be vital to maintaining healthy levels of T. That being said, the 10.5 mg dosage here on Signature ZMA is plenty. However, I would’ve preferred the P-5-P form of B6 rather than Pyridoxine HCl.
Magnesium – Among Mg’s 300+ involvements in the body, perhaps the most suited to this supplement is its ability to limit SHBG and stress while also promoting relaxation. These effects enable Magnesium to improve “free” testosterone, sleep, and muscle recovery.
Zinc – It’s a popular antioxidant that helps boost the immune system but for male health, it’s especially beneficial for testosterone synthesis. Moreover, research shows that Zinc can also help prevent the “T drop” that typically happens after a gruelling workout session.
Both Magnesium and Zinc are given in solid forms and dosages. Here’s why it’s important:
Let’s start with form. Here on Signature ZMA, both Zinc and Magnesium are given in their Aspartate versions. This means that the molecules of both minerals are attached to the amino acid Aspartate (or Aspartic Acid).
Now, why is this such a big deal? Well, that’s because being bonded to an amino acid makes both of them that much easier to absorb. Zinc, in particular, is also given here as mono-l-methionine – a form that research supports as superior to a couple more commonly used versions.
Moving on, Zinc and Magnesium are dosed at 30 mg and 450 mg respectively. These dosages are above their recommended daily allowances (RDA) but don’t worry; they’re still well within their upper limits so they’re safe.
Signature ZMA Directions
Each serving of Signature ZMA consists of 3 capsules. However, according to Bodybuilding, men and women take different dosages:
- For Men – Take 3 capsules daily
- For Women – Take 2 capsules daily
First of all, what is ZMA?
Basically, ZMA is the combination of Zinc, Magnesium, and Vitamin B6. Moreover, it’s been a staple part of many athletes’ supplement stacks. That being said, Signature ZMA isn’t actually the first product to come up with this particular trio. On that note, Signature ZMA isn’t the first one to emulate it either.
Back in 1999, Victor Conte and his company, BALCO labs, began to market the first ZMA supplements. I won’t go into detail about this stack’s complicated history but from then on, many other supplement manufacturers have “copied” and even “upgraded” the original ZMA formula.
Speaking of original, Bodybuilding [.] com uses the same exact version – from the dosages down to the forms. In a way, this is both good and bad.
It’s good because this particular formulation has been shown in research to improve the “free” testosterone, growth hormone, and muscle strength of athletes. Plus, ZMA promotes sleep, too, so you feel better rested the next day.
However, another study on ZMA showed the opposite results where they found “no significant changes in serum total and serum free testosterone” after ZMA supplementation. So, why did these two studies end with different conclusion? The answer is in the next part of this review.
Signature ZMA Benefits: Does it Work?
With two similar researches ending with conflicting results, this truly is a conundrum.
To the answer the question, I believe it’s both YES and NO.
You see, the difference in both studies is that the research that showed negative results conducted their experiment on men with healthy levels of Zinc. Moreover, I believe it’s not just Zinc’s levels that affect the effectiveness of ZMA but rather, Magnesium and B6’s, too.
In essence, if you’re already taking enough of these nutrients in your everyday life, there’s not much use for ZMA supplementation. However, if you’re low on either Zinc, Magnesium, or Vitamin B6, ZMA can help boost your testosterone, performance, recovery, and sleep.
On that note, ZMA should work for a majority of men.
According to the Environmental Working Group, 61% of adults lack sufficient Magnesium from their everyday dietary intakes. Furthermore, today’s fast-food and alcohol trend make it easy to be at risk for Zinc insufficiency. In fact, one study estimates nearly 2 billion people around the world are Zinc deficient.
Hence, if you’re planning on taking Signature ZMA, there’s a pretty good chance it’ll work for you.
Signature ZMA Review Summary
- Non-proprietary – Showing all the dosages of all the ingredients is always a good thing.
- Affordable – At just $12.99, Bodybuilding’s Signature ZMA isn’t hard on the pocket.
- Effective – If the original ZMA was effective then this should be effective. Well, at least for most people.
- Reputation – It only has 3 customer reviews as of the moment but they all gave positive ratings and feedback. No reports of side effects either.
- Unoriginal – I get that the original formulation works but with a few tweaks, I believe it can work even better.
- Not powerful – I wouldn’t say it’s weak but it’s not strong enough to get you prime levels of testosterone either. Pair with a more direct, daytime T booster for maximum results. For your reference, here’s my list of the best testosterone supplements.
- Exclusive – Apparently, all of Bodybuilding [.] com’s Signature line of supplements are exclusive to their website. Don’t waste your time on Amazon or GNC because it’s not there.
The Bottom Line
As per Bodybuilding, their Signature line of supplements is built on trust. True enough, I think Signature ZMA is a nighttime testosterone booster that most of you can put your faith in. If you’re an athlete, bodybuilder, or fitness enthusiast, this supplement can help you boost testosterone, improve muscle recovery and strength, and most especially, better your sleep so you’re ready for the next day’s grind.