Sergeant Steel is extremely popular in the UK. It is probably one of the most talked-about testosterone boosters on the market right now. But we don’t think that this popularity is deserved at all. Sergeant Steel is not a terrible supplement; it will definitely support healthier testosterone levels in men of all ages, and it doesn’t look likely to cause serious side effects. However, it does not pack anywhere near the kind of punch we expect from professional testosterone booster today. Nor is it great in terms of value for money. Better supplements are available.
Our Sergeant Steel Review
Sergeant Steel is a really interesting supplement. Made by Assault Labs, this testosterone booster became a big hit in the US when it was first launched. While it seems to have run out of steam a little over there, in the UK Sergeant Steel remains one of the best-selling testosterone boosters on Amazon.
So what does Sergeant Steel claim to do?
Why are so many people seemingly drawn to it?
Assault Labs don’t’ pull any punches when it comes to selling their product. According to them, Sergeant Steel is a “military-grade” testosterone booster. In fact, they say that it is the strongest testosterone booster to ever hit the market.
Big words, right?!
Assault Labs Sergeant Steel claims to deliver the following key benefits:
- Increased libido
- Increased strength
- Increased endurance
- Faster muscle growth
- Heightened sense of well-being
Obviously, these are all benefits that would follow on from having higher free serum testosterone levels.
The question is, does Sergeant Steel actually deliver on that front?
Most testosterone boosters try to treat the symptoms of low testosterone, not the problem itself. We look for products that can actually increase free serum testosterone levels, not just make you feel a bit more energetic or horny.
Does Sergeant Steel work?
Is it safe for long-term use?
How does it compare to the our current top rated supplements?
Find out by reading our full Sergeant Steel review below. We look at the ingredients in greater detail; do they have proper scientific backing? Are the doses right? We’ll tell you everything you need to know. Have you used Sergeant Steel? Tell us what you thought in the comments at the end!
Sergeant Steel Formula
Let’s check out the Sergeant Steel ingredients list and see if this testosterone booster is really “military grade”:
Military grade? Hardly!
The one word that jumps to mind when looking at this formula is “weak”.
Sergeant Steel has left some of the most effective ingredients dosed too low to have a real effect on testosterone levels. Most good testosterone boosters contain far more Vitamin D, Boron and Zinc than we get here. These are basic ingredients that should be dosed right!
We could also use a lot more Ashwagandha – this isn’t exactly a standard ingredient like zinc and Vitamin D, but it is a powerful testosterone booster and cortisol suppressor, and it should be dosed generously.
There’s also quite a few substances in Sergeant Steel that don’t do anything.
Maca has never been proven to work as the manufacturers claim. Tribulus Terrestris has been conclusively proven to be bogus!
DHAA is a naturally occurring acid. We cannot find any information relating to its effects on testosterone. Some claim that it inhibits oestrogen conversion, but these are just claims!
All-in-all, not a fantastic testosterone booster.
Let’s go through this in a little more detail.
- Good serving of Mucuna Prurirens
- Good serving of Stinging Nettle
- Utilizes Ashwagandha
- Good serving of D-Aspartic Acid
Given what we said about the formula as a whole above, you might be surprised to see that there are actually some some strong selling points to Sergeant Steel.
For one thing, Sergeant Steel provides a very generous serving of Mucuna Pruriens.
Mucuna Pruriens has some of the strongest scientific backing among natural testosterone boosters in use today. Repeated clinical trials have found that mucuna pruriens supplementation leads to significantly higher free serum testosterone levels in men. Studies in mice suggest that Mucuna Pruriens works by stimulating Luteinizing Hormone release from the pituitary (source).
Sergeant Steel provides a nice big 250mg serving of Mucuna Pruriens Extract. Importantly, we’re told that the extract is L-Dopa; the active ingredient thought to promote testosterone levels in humans.
It’s also great to see that Sergeant Steel utilizes Ashwagandha.
In our opinion, ashwagandha is an extremely under-utilized testosterone booster. It is extremely effective, it works by a relatively unique mechanism not shared by your average testosterone boosters, and it rarely causes even mild side effects.
So to us, it is a pretty incredible testosterone booster. If you want to know more, we explain how ashwagandha works and why it is such a good substance to have in a natural testosterone booster in this article.
Sergeant Steel delivers a fairly decent 337.5mg of KSM-66 Ashwagandha Extract per daily serving. We don’t know why they chose 337.5mg – it seems oddly precise to us! But this is enough ashwagandha to deliver a significant reduction in cortisol levels, which will in turn allow your testosterone levels to spike.
Sergeant Steel combines some excellent, scientifically-proven testosterone boosters at decent doses. Many of you will see marked improvements in vitality and muscle growth using this product.
But on the whole, we think Sergeant Steel is a relatively low quality testosterone booster.
- Lots of dud ingredients
- Basic ingredients dosed too low
Despite the many strengths listed above, we aren’t in a rush to go out and buy Sergeant Steel.
The main reason we aren’t recommending this testosterone booster is that it is just too full of dud ingredients.
Tribulus Terrestris has been conclusively proven to be ineffective for raising free serum testosterone levels in men of any age.
Maca Root has never shown any serious, positive effect on testosterone levels in independent, peer-reviewed clinical trials.
Shilajit is an over-hyped “alternative medicine” that – as far as we can tell – has never been shown to do anything worth talking about. The claims surrounding shilajit are extremely vague; it can “improve health”, “support wellness”, and “boost life”. It is sometimes used in Ayurverdic medicine, but what isn’t?
We’ve done extensive research into DHAA and so far we’ve come up completely empty handed. All we can find are claims that it might reduce oestrogen conversion. Claims. We’ve not been able to find any data to back these claims up.
These ingredients lack a shred of hard scientific proof.
Yet they’ve all found their way into Sergeant Steel; a premium, supposedly professional-quality testosterone booster.
Not good enough!
Then there is the fact that Sergeant Steel doses the most basic testosterone boosters in the formula too low to have the kind of effect we know they can elicit.
Vitamin D is a staple in natural testosterone boosters. Rightly so; it works!
But 1500IU is a very low dose for a perfectly safe, potent, cheap ingredient like Vitamin D3. Vitamin D3 is dose-dependent – the more you take, the better the results. The best testosterone boosters provide 4000IU and up. Some, like TestoFuel, contain more than 5000IU of Vitamin D3.
Zinc, as most of you will know, is a standard testosterone booster.
It is the first supplement people turn to when they are looking to support T levels; that and magnesium. Since it is so reliable, cheap and readily available, supplements usually contain more than 100% of your RDI of zinc. But Sergeant Steel only gives you 50%! That’s less than you’ll get from a cheap multivitamin.
Boron is not as widely used as Vitamin D3 or Zinc, but not because it isn’t as effective. It is just more expensive, and the effects take longer to materialize.
Many of the best natural testosterone boosters on the market today contain a fair amount of Boron. A standard dose would be 5mg. Better stacks contain 10mg. Once again, Sergeant Steel fails to come anywhere near that; it gives you just 2.5mg per daily serving.
A low dose of a vitamins or mineral here and there isn’t a disaster. But when it is literally every vitamin and mineral in a stack, you know you have a serious problem.
Sergeant Steel really needed to have done better with the basics here. The formula contains too much dead weight for it to be skimping on the foundational ingredients.
Sergeant Steel Side Effects – Is It Safe?
On the whole, Sergeant Steel looks like a safe natural testosterone booster.
None of the ingredients are thought to pose serious risks to health or safety. To our knowledge, none of them are associated with serious short-term side effects.
Some users report intestinal discomfort when using Tribulus Terrestris. Considering it doesn’t do anything positive, this seems an unacceptable side effect risk.
There is also the troubling case of DHAA.
We have absolutely no idea what this compound is supposed to do in the body. We can’t find any human clinical trials on this substance. All we can find are vague, completely unsubstantiated claims about it being an aromatase inhibitor.
It is used in other testosterone boosters, but not in many. We therefore urge extreme caution when using this compound. It is a natural compound (found in pine bark), but it is not usually consumed in high concentrations.
On the whole though, Sergeant Steel looks pretty safe to us.
It’s been on the market for some time, and it doesn’t seem to have caused many users any problems.
As always, do your own research carefully before buying.
Please remember the following while reading our reviews:
- We are not doctors
- This is not medical advice
You must consult a qualified medical professional – an MD, not a chiropractor – before you start using any testosterone boosters. We don’t know you or your medical history. All we are doing here is highlighting the most obvious dangers based on our experience and research. If you do experience side effects while using Sergeant Steel, cease use and get medical attention asap.
Sergeant Steel Review Conclusion – Is It Actually Any Good?
Honestly, we’re really not overly impressed with Sergeant Steel.
It might be popular on the other side of the pond, but the UK has produced some excellent testosterone boosters over the last couple of years and the bar has been set quite high.
The combination of dud ingredients and low doses means that Sergeant Steel doesn’t compare well with the best testosterone boosters on sale in the UK right now.
It does have some big benefits of course. You get a very generous serving of Mucuna Pruriens, you get plenty of Nettle Extract, and you get a decent dose of Ashwagandha (good quality KSM-66 too).
We think any of you who decide to use Sergeant Steel will get the results you’re looking for.
But we think you will definitely get better results using a more professional testosterone booster – one with fewer dud ingredients and better servings of the most basic T-boosters.
Sergeant Steel will help support healthy testosterone levels. It is not a terrible choice for someone in need of some extra juice in the gym.
But if you want optimal results and the best possible value for money, then we suggest opting for a higher quality product.