MAN Sports Delta XT really fell short of our expectations. It is one of the most talked-about testosterone boosters on the internet, so we had hoped that it would at least have a unique formula, or pack a bit of a punch. But no; what we have here is a boring, under-powered, unimaginative testosterone booster. The two main ingredients don’t actually influence testosterone levels. Fenugreek improves libido, but the available scientific studies are pretty clear that it does not increase testosterone levels. The same goes for Maca Root; lots of people might “feel” Maca working, but the empirical evidence says that it’s bogus.
We really don’t think it’s worth paying $40 for a supplement that is basically some DIM, a good serving of Zinc, and some Fenugreek. Certainly not when you consider what you can get for a similar price.
Our MAN Sports Delta XT Review
MAN Sports is a really interesting brand in our opinion. These guys are pretty niche; they specialize in bodybuilding supplements, and they seem to sell everything exclusively online. They have a pretty extensive range of products on offer – they cover all the usual suspects like protein isolates, amino acids, pre-workouts, etc. They actually have several testosterone boosters; Nolvadren, PR-XT, and Delta XT. This review is going to focus on Delta XT, which seems to have been their first testosterone booster, and their most popular.
What does Delta XT do then?
Why is it so popular?
The bottle describes Delta XT as a “selective testosterone booster”. This isn’t terminology we’re familiar with; we have no idea what that could possibly mean, and we’ve certainly never seen another product described this way.
The website doesn’t really explain what they mean by this either. The only reference to the word “selective” we see on there is when they say that Delta XT uses “select ingredients” – as opposed to randomly chosen ingredients? All testosterone boosters had their ingredients selected, so this doesn’t mean anything.
The MAN Sports website does, however, give us a list of the benefits that users can expect from using Delta XT:
- Reduced estrogen
- Boost testosterone levels
- Reduced recovery time
- Faster muscle growth
- “Explosive strength”
- No PCT required
Obviously, things like increased strength and faster muscle mass gain will follow from having elevated testosterone levels and lower estrogen levels.
So, does MAN Delta XT actually work, or does it just treat the symptoms of low testosterone?
Is it any good?
How does it compare to the best testosterone boosting supplements on the market today?
Read our full Delta XT review below to find out! We’ll tear the formula apart, exposing the weaknesses and the strengths. We’ll talk about the side effects, and the price tag. Have you used this supplement before? Let us know what you thought in the comments!
MAN Sports Delta XT Ingredients
Let’s take a look at the MAN Delta XT formula:
That’s really not a very exciting or impressive formula.
We didn’t know what to expect exactly, but we definitely expected something a bit more interesting than this.
There are two main ingredients in Delta XT – Maca Root Extract and Fenugreek Extract. Neither of these ingredients has ever been observed increasing testosterone in humans. Fenugreek does boost libido, but it has absolutely no effect on testosterone levels at all. Maca Root has simply been shown to be ineffective at doing anything of use to humans.
The only ingredients in MAN Delta XT which can influence testosterone are DIM, Zinc, and Magnesium.
However, these really aren’t the most powerful testosterone boosters in the world.
DIM is primarily an aromatase inhibitor; it does not stimulate the production of testosterone in the testes. That means that unless your problem is too much aromatization, it isn’t going to make a difference to your testosterone levels. Really, it should be coupled with a direct test booster!
All in all, this is a pretty mediocre supplement. We don’t think it’s worth the price tag at all – it might be cheaper than some other testosterone boosters, but in terms of value for money it’s pretty terrible.
Let’s go through these problems in a little more detail.
Main Weakness – Half The Formula Does Nothing For Testosterone!
As we said above, the main weakness of this product is the fact that over half the formula is dedicated to ingredients that don’t actually influence testosterone levels!
The two biggest ingredients in MAN Delta XT are Maca Root Extract and Fenugrek Seed Extract. Unfortunately, clinical studies have shown that these ingredients DO NOT increase testosterone levels in humans.
Let’s start with Fenugreek.
Fenugreek Seed Extract is a very common testosterone booster ingredient. It is actually something we like to see added to good quality stacks because of its proven ability to improve sex drive, particularly in men suffering with a severe loss of libido.
In this clinical trial, for example, researchers found that a highly potent Fenugreek Extract – Testofen – was able to significantly improve the physiological aspects of libido in men aged 25-52. However, there was no indication that testosterone levels were affected beyond what researchers inferred from the improved libido.
In fact, the researchers stated that: “Serum prolactin and testosterone levels remained within the reference range”.
Our suspicions are confirmed by this study, in which researchers discovered that Fenugreek Extract increases subjective sexual desire, arousal, orgasm, and other aspects of libido without influencing testosterone. We’ll quote the findings in full here so you can see for yourself:
“Although a between group difference was noted for free testosterone at T2 and T3, it has limited relevance due to the fact that it did not significantly change over time. The investigation by Aswar and colleagues (2008) found no significant changes in serum testosterone levels in rats when treated with either a 10 mg/kg or 35 mg/kg dosage of galactomannan. This evidence coincides with our finding, which implies that the commercially available supplement lacks the potential for altering hormone values in combination with a resistance training regimen. Therefore, it is assumed that daily consumption of the 500 mg commercially available supplement in conjunction with a resistance training program has no anabolic effect on the hormonal status of resistance trained males.”
You read that right…no anabolic effect. It seems that many supplement manufacturers have simply been assuming that an increase in libido must come from an increase in testosterone levels. That’s not the case at all; sexual appetite and performance is controlled by lots of things besides testosterone.
Using Fenugreek as a primary ingredient is a big mistake from MAN Sports! Delta XT needs a proper testosterone booster as its main ingredient, not an aphrodisiac.
Now let’s move on to Maca Root – another ingredient which does not affect testosterone levels in any way whatsoever!
We don’t need to spend too long discrediting Maca Root as a testosterone booster. A look at one of the most robust and conclusive studies will suffice.
In this clinical trial, researchers gave men aged 21-56 years old either a placebo, 1500mg of Maca Root, or 3000mg of Maca Root per day for 12 weeks. This was a double-blind, randomized, parallel, placebo controlled trial using large doses of good quality Maca Root Extract. Here is what the researchers found:
“Serum testosterone and oestradiol levels were not different in men treated with Maca and in those treated with placebo (P:NS). Logistic regression analysis showed that Maca has an independent effect on sexual desire at 8 and 12 weeks of treatment, and this effect is not because of changes in either Hamilton scores for depression or anxiety or serum testosterone and oestradiol levels.”
Like Fenugreek, Maca seems to have a positive effect on libido.
And like Fenugreek, this effect is completely independent of testosterone.
Again, the supplement manufacturers have probably heard that Maca Root increases sexual performance and have just assumed that it boosts testosterone. But it doesn’t.
Together, Fenugreek and Maca Root make up the vast majority of the MAN Sports Delta XT formula. The bulk of the formula therefore comprises ineffective, dud testosterone boosters. The guys over at MAN Sports clearly let themselves be led by hype on this one!
Delta XT Side Effects – Is It Safe?
Is MAN Delta XT a safe supplement? How does it compare to other testosterone boosters in terms of side effects and long-term health risks?
In our opinion, this looks like a relatively safe supplement.
We’ve had a good look at the formula, and we don’t see any red flags.
There’s nothing in here which gives us serious cause for concern; Delta XT uses nothing but ingredients which are well-understood and widely used in supplements today. Each ingredient has been tested numerous times in strict clinical trials, and they have all been deemed generally safe for human consumption.
None of the trials we have seen which looked at these substances raised serious side effect concerns. Nor did they mention any long-term health risks (of course the trials were often limited to 28 days so this cannot be ascertained from this data alone).
Generally speaking, we think 99% of users are going to be able to use Delta XT without experiencing a single adverse effect.
However, that is not to say that you are not in the 1% of users who will be adversely affected by one of more of the ingredients in this testosterone booster. We don’t know you or your unique circumstances – things which are very relevant to discussions of safety. All we are doing here is talking generally about the average, hypothetically healthy user.
It is absolutely vital that you remember the following facts while reading these reviews:
- We are not doctors
- This is not medical advice
All we are doing here is highlighting the most obvious dangers as we see them, according to our research and experience. Your circumstances may make certain ingredients unsafe for you, even if they appear safe for 99% of people. It is crucial that you get proper medical advice from your regular family doctor before you use any supplements discussed on this site.
If you do experience side effects while using Delta XT, discontinue use immediately, get medical attention, talk to the manufacturer, and if possible, please share your experiences with other readers below.
Pricing – How Much Does Delta XT Cost?
We don’t think Delta XT provides a great deal of value for money.
Each bottle costs $36.99, and contains 84 capsules.
At 3 capsules per daily serving, that’s 28 days worth of Delta XT per bottle. This comes to $1.32 per day.
On a simple cost basis, that is much cheaper than many of the other testosterone boosters reviewed on this site, including all of our current top rated products.
However, in terms of value for money, we think Delta XT is a bad deal.
As explained above, most of the formula is taken up by ingredients that don’t actually contribute to higher testosterone levels in any way. Maca Root doesn’t influence hormonal parameters to a meaningful degree. Fenugreek improves libido independently of testosterone. These are facts which have been validated time and again in clinical trials.
So really, Delta XT is a DIM, Zinc and Magnesium supplement with some Fenugreek added for extra kick.
We don’t think it’s worth paying $1.32 per day for that.
MAN Delta XT Review Conclusion – Is It Any Good?
A significant number of you will have skipped the bulk of this review and come straight here to answer one very simple question – is Delta XT any good?
In our opinion, the answer to that question has to be a resounding, unequivocal “not really”.
It is pretty much just a DIM supplement coupled with some Zinc and Magnesium.
Yes Fenugreek provides some libido support, but we really only want this in a supplement that also provides a lot of ingredients which actively increase testosterone. Ideally, we want several substances which attack low testosterone along different pathways. Sadly, neither Fenugreek nor Maca Root influence testosterone in any way, shape, or form.
The studies are pretty clear on this – to see the evidence, check out the section on bogus ingredients above.
We don’t think you’re going to get spectacular results from DIM, zinc and magnesium alone.
In order to get the same kind of results you get from the best testosterone boosters today, we’d need to see some decent cortisol control, a hefty dose of D-Aspartic Acid, maybe some Ginseng, and a god dose of Vitamin D.
If you’re looking for something to help keep your testosterone levels nice and high while you kill it in the gym, we think you’re better off investing in a more comprehensive, full-spectrum, potent testosterone booster.
MAN Sports Delta XT might have a cheaper price tag than some of the leading products, but in terms of value for money it’s lagging well behind the pack.