Weider Prime’s big strength is the excellent dose of Ashwgandha extract. To make things even better, they’ve used KSM-66, which is the best quality, most potent extract on the market. However, as good as 675mg of Ashwagandha is, it isn’t enough to make a great testosterone booster. The other good ingredients in this formula have been dosed too low to make a real impact; 100% of your RDI of Vitamin D is pretty pathetic in our opinion. Many good testosterone boosters provide more than 10x this much! Some of the ingredients are completely useless for increasing testosterone. Cordyceps, for example, has never been proven to influence testosterone levels in humans.
All in all, we think you would be better off just buying KSM-66 and a good multivitamin rather than paying over the odds for this stack.
Our Weider Prime Review
Weider Prime is a premium, natural testosterone booster made and sold by Weider Global Nutrition. If you’re even remotely interested in bodybuilding, then Joe Weider needs no introduction. This guy was one of the first “faces” of professional bodybuilding, and the line of equipment, supplements, and workout routines associated with his name are still very much in use today. The Weider brand is trusted by people around the world because they trust in Joe Weider and his legacy.
So what is Weider Prime supposed to do?
Is it any good?
Unlike many other testosterone boosters around right now, Weider have not over-promised here. The bottle states that Weider Prime “supports healthy testosterone levels within the normal range”. It isn’t making itself out to be natural Trenbolone or anything!
According to the website, users can expect the following benefits:
- Increase energy and focus
- Improve strength and recovery
- Increase lean body mass
- Reduce stress
This is a great list of benefits.
These benefits all follow on from having lower testosterone levels. They are, then, what we’d expect from a natural testosterone booster. However, some supplements treat these symptoms of low testosterone independently without actually affecting free serum testosterone levels at all.
If Weider Prime can do all of this – and do it by actually increasing testosterone levels – then we’ll be very happy. After all, few testosterone boosters live up to their promises! Only a handful of supplements out there actually make a difference to your hormone profile.
Is Weider Prime one of them? Does it really work?
How does it compare to the best testosterone boosters on the market right now?
Read our full Weider Prime review below to find out. We start off by looking at the formula and seeing if the ingredients are likely to work as the manufacturer promises. Have you used Weider Prime? Please share your experiences in the comments section at the end!
Weider Prime Formula
Here is the Weider Prime ingredients list as it looks on the box:
That’s not the most impressive formula we’ve ever seen.
That’s putting things mildly.
We weren’t expecting to be blown away or anything here, but we thought a brand as prestigious and with as much history as Weider would have given their testosterone booster a little more ‘oomph’.
The thing that we notice right away is the Ashwagandha content. Each serving of Weider Prime gives us a whopping dose of high quality, potent KSM-66 Ashwagandha Extract. This will no doubt make a considerable difference to your stress levels, not to mention your cortisol levels.
However, the rest of the formula is uninspiring.
Cordyceps doesn’t actually do anything for testosterone – not to our knowledge at least. There is certainly not enough evidence to prove that it does.
Some other important ingredients are dosed quite low.
Really, it seems that Weider Prime is a very expensive Ashwagandha supplement with some zinc thrown in for good measure! We don’t think it’s really worth spending $30 on such a supplement.
Let’s go into this in a little more detail.
Main Strength – Generous Ashwagandha Dose
Without question the main strength of this testosterone booster is the ashwagandha content.
Ashwagandha’s relationship with testosterone is extremely interesting.
Studies have shown that Ashwagandha supplementation leads to a significant reduction in both subjective feelings of stress and anxiety and in actual cortisol levels (ref). As the researchers in the cited paper noted: “The serum cortisol levels were substantially reduced (P=0.0006) in the Ashwagandha group, relative to the placebo group.”
We’re sure you’re all aware that cortisol is the body’s stress hormone. It is an antagonist of testosterone – the two do not mix. high cortisol means low testosterone, and low cortisol usually means rapidly rising testosterone (although testosterone levels don’t seem to vary anywhere near as much throughout the day as cortisol).
Having elevated cortisol not only pulls own your testosterone levels, but it makes training and recovery extremely difficult. Cortisol zaps your strength, increases body fat accumulation, and accelerates muscle wastage.
It also prevents you from sleeping properly (which is why chronically stressed people struggle to sleep).
It’s no surprise then that treatment with ashwagandha has been shown to cause a sharp rise in free serum testosterone levels. In this study, for instance, researchers made the following observation: “A significantly greater improvement and regulation were observed in serum hormone levels with the Ashwagandha root extract treatment as compared to the placebo treatment. Serum testosterone increased significantly by 17% (from 4.45 ± 1.41 ng/mL to 5.22 ± 1.39 ng/mL; P < 0.01) and LH by 34% (from 3.97 ± 1.21 mIU/mL to 5.31 ± 1.33 mIU/mL; P < 0.02), following treatment with Ashwagandha root extract, as compared to the baseline (Day 0) values of these parameters.”
Weider Prime contains a very good dose of KSM-66 Ashwagandha Extract. This root extract is the gold standard of ashwagandha products. It is a branded, full-spectrum root extract standardized to be 5% Withanolides.
What this means in practice is that we are not being ripped-off by ineffective leaf extracts, cheap root powders or other sub-standard products. We’re getting the most potent extract on the market, providing large amounts of the stuff we’re actually interested in – the stuff which actually influences our hormones!
Weider Prime contains over 600mg of KSM-66. That is TWICE the dose we think you need to take to see real results; more than enough for anybody! This generous dosing and good ingredient quality really does make Weider Prime stand out.
Unfortunately, that does not extend to the rest of the formula!
Main Weakness – Other Ingredients Don’t Do Much!
Unfortunately, the other ingredients in Weider Prime are considerably less exciting. Aside from the Ashwagandha, there isn’t much in this stack that is actually capable of increasing testosterone in the blood by a meaningful amount.
Take Cordyceps for example.
This mushroom is all the rage right now; it’s being added to supplements left right and center, and you can even buy standalone cordyceps extract powders from some brands.
However, we aren’t exactly sure why; we have never seen any evidence proving that cordyceps mushrooms have any effect on hormone levels in humans whatsoever. The only studies which have thus far shown any relationship between cordyceps and testosterone have been carried out on mice, like this trial for example.
If you read that referenced study, you’ll see that the higher doses of cordyceps actually reduced testosterone production along certain pathways:
“Interestingly, hCG-stimulated testosterone productions were suppressed by CS in a dose-dependent relationship. CS also reduced dbcAMP-stimulated testosterone productions, which indicated that CS affected signal transduction pathway of steroidogenesis after the formation of cyclic AMP.”
This finding is backed up by other papers which make it clear that cordyceps does not have a simple relationship with testosterone (ref).
After ashwagandha, this is the main ingredient in Weider Prime. Yet from the evidence we cannot be confident that it will actively increase serum testosterone levels. We cannot even be sure that it wont decrease testosterone levels in some way. This is a poor choice for a testosterone booster – no question about it!
Major Weakness – Key Ingredients Dosed Too Low
The last thing we really want to draw your attention to here is the dosing issue.
In some areas, like ashwagandha and zinc, Weider Prime provides some really generous doses. In the case of ashwagandha, it supplies more than we get from pretty much any other testosterone booster – more than we can possibly use in fact!
However, in at least one case Weider have severely under-dosed a key ingredient.
We’re talking primarily about Vitamin D here.
Vitamin D is a staple ingredient in testosterone boosters. So it should be too.
Vitamin D and testosterone are intimately linked. We know that a vitamin D deficiency invariably leads to low testosterone (ref). We also know that supplementation with vitamin D is sufficient for reversing a deficiency, and that this also leads to an increase in serum testosterone levels (ref).
Supplementing with vitamin D is a reliable, safe, proven method of rectifying a vitamin D deficiency, which just so happens to be one of the leading causes of low testosterone in otherwise healthy men.
Weider Prime does contain some vitamin D, but nowhere near enough for our liking!
Weider Prime provides 400IU.
Most good quality testosterone boosters today provide about 4000-5000IU of Vitamin D per daily serving. That’s 10 times as much.
Weider Prime Side Effects – Is It Safe?
One thing we can say about Weider Prime – it probably isn’t going to cause many users serious problems as far as side effects are concerned.
All of the ingredients in Weider Prime are commonplace in the supplement industry. They are used in dozens, if not hundreds of other testosterone boosters on the market today. They are not thought to pose any major side effect risks or long-term health dangers.
More importantly, the ingredients in Weider Prime have all been thoroughly tested in clinical trials (in some cases mostly on rats). They have all been deemed safe for regular human consumption, although they are not necessarily endorsed for that purpose.
The only red flag we think it might be worth considering is DIM.
DIM, or diindolylmethane, is a naturally-occurring compound found in cruciferous vegetables like kale and broccoli.
It has anti-estrogen properties, which is why you will find it in many testosterone boosters (especially those aimed at young bodybuilders).
Most of the studies looking at DIM supplementation have focused on older women. Few long-term studies have been conducted on young men. This is why we often recommend Indole-3-Carbinol, which is a much more robustly studied compound with practically the same effects.
Overall though, this looks like a very safe testosterone booster. Few users are going to experience any side effects worth mentioning. When they do occur, they’re likely to be mild – in our opinion at least.
It is absolutely vital that you be aware of the following facts while reading our reviews:
- We are NOT doctors
- This is NOT medical advice in any way
Every individual is different. We don’t know you, your allergies, your lifestyle, or your unique medical history. We therefore cannot say with certainty whether or not a supplement is definitely safe for you. All we can do is highlight the most obvious dangers as we see them, according to our experience and research.
Always get advice from a qualified medical doctor before taking any new supplements, even if they are ‘100% natural’. You must do your own research and, ideally, talk to your regular family doctor about your concerns. If you do have very low testosterone, they might prescribe TRT.
Weider Prime Review Conclusion – Is It Worth It?
In our opinion, this is a pretty disappointing testosterone booster.
Weider Prime contains a very good dose of top quality Ashwagandha Extract.
It also provides us with a very good serving of zinc.
But that’s about it.
The rest of the formula is kind of underwhelming.
Crodyceps does not affect testosterone levels; not according to any independent clinical trial on humans anyway. Until we see such evidence, we’re going to just assume that ti does nothing.
The Vitamin D dose is way too low for a testosterone booster too; we think a premium stack today should provide TEN TIMES this much Vitamin D as standard.
Weider Prime will definitely help reduce stress, lower cortisol levels, and support efficient testosterone synthesis. If your problems were a lack of zinc or too much cortisol, this supplement will help restore your testosterone levels to their previous, healthy highs.
But if your low testosterone is not caused by these specific issues, Weider Prime is unlikely to help.
Other testosterone boosters do everything that Weider Prime does and then a whole lot more on top.
To get the best possible results – and to cover all possible bases – we think it’s worth investing in a more comprehensive, powerful testosterone booster. For a few extra dollars per bottle, you can tackle low testosterone from every angle and get some real results for your money.