Our full Limidax XR review can be found below, but for those of you with limited time, here’s a summary. Thus product contains some really good cognitive enhancing substances. It also contains green tea extract and caffeine; a combination found in many professional nootropic stacks.
However, the Limidax XR formula as a whole has some serious limitations.
The fact that there is no cholinergic content is a big flaw, and the main memory-enhancing ingredients are provided in a combined dosage of 33mg. The vast majority of the formula is taken up with various forms of caffeine, which in itself doesn’t do a great deal for cognitive function. The uncertainty about the caffeine dose makes us worried about side effects too!
All-in-all, we think people looking to enhance overall cognitive function in the long-term should look elsewhere. We don’t like proprietary blends and we certainly don’t like them containing so much waste!
Where To Buy Limidax XR
As always, the safest, most reliable way to buy supplements is to get them directly from the manufacturer. Most manufacturers have multi-purchase deals that actually represent decent value.
Full Limidax XR Review
Limidax XR is a relatively new natural nootropic supplement to hit the market.
As far as we are aware, it has been around for less than a year (at time of writing). Despite its infancy, it already seems to have quite a presence online.
We therefore couldn’t leave it any longer before doing a proper Limidax XR review.
According to the Limidax XR website, this all-natural nootropic supplement is designed to deliver a number of benefits:
- Improved mental agility
- Greater focus
- Heightened concentration
- Better memory function
- Higher productivity levels
If you’re an entrepreneur, student, or over-stretched creative professional, these are exactly the kind of benefits you want to get from a natural nootropic supplement.
Based on the manufacturer’s claims, then, Limidax XR seems like the perfect brain booster.
We now need to find out if these claims are true.
But will it really deliver on these claims?
Can it really enhance memory, focus, and concentration at the same time?
Is it safe? What are the likely side effects of using Limidax XR?
Let’s take a closer look at Limidax XR and find out. We’ll start this Limidax XR review by looking at the ingredients. If you get to the end of the review and you still have questions, just let us know in the comments section at the end. We always aim to get back to our readers within 48 hours.
Limidax XR Ingredients
Here is the Limidax XR ingredient list, as it appears on the product label:
What’s the first thing that we notice here?
That’s right! Multiple proprietary blends!
Limidax XR is made up of a number of proprietary blends, and judging by their names each of them seems to have a different purpose.
We hate proprietary blends for a number of reasons that we have gone into many times before. Suffices to say here that they treat you, the potential customer, with total contempt. They say to us “forget about your own brain, just do as we say”.
The best thing to do here may be to look at each of the blends individually and to examine whether they are likely to deliver for most people. Here’s a review of the Limidax proprietary blends:
Neuro-Support Proprietary Blend (33mg)
This blend contains vinpocetine, nettle leaf extract, and yohimbine extract, split between 33mg.
Vinpocetine is a widely used, effective nootropic substance (visit our ingredients page for more info).
The blend serving size may initially seem quite low, but in fairness to Limidax XR supplements do not normally contain much more than 12mg of vinpocetine (many good supplements contain less). it is therefore quite possible for this great natural nootropic to be dosed proprerly.
Yohimbine is used in sports supplements for its supposed ability to increase epinephrine levels in the body. We can see why some people think this stuff would work in a nootropic, but the scientific evidence just isn’t there for this ingredient.
We haven’t seen any hard clinical data supporting Yohimbe, and we don’t think the evidence backing up its reputation as a sports performance supplement stands up to scrutiny either.
The inclusion of nettle leaf extract is a bit of a mystery to us; it does not seem to have any nootropic effects at all.
Rather, it is usually taken to help with urinary tract problems, and even then it is taken in doses of over 100mg. It seems then that this blend contains an unnecessary filler that may be taking up valuable room which could have gone to vinpocetine.
Perhaps most perplexing is the choice of name for this blend.
We would not describe any of these nootropic substances as “brain support”. Vinpocetine can help with cognitive performance, but it cannot really be said to “support” the brain. We would have expected to see a comprehensive vitamin and mineral blend here rather than yohimbine and nettle extract.
Extended Concentration Proprietary Blend (300mg)
We’re extremely concerned to see a proprietary blend of 300mg contain caffeine.
This is one of the main reasons we dislike proprietary blends – the uncertainty it creates regarding side effects.
It is perfectly feasible for the “extended concentration” blend to contain as much as 300mg of caffeine.
Sure, it could contain a lot less, but the manufacturer has decided to reduce us to guess work.
We don’t care who you are; that is A LOT of caffeine to consume in a single capsule. Even if you think you have a high caffeine tolerance, 300mg is enough to cause some potentially serious side effects in the vast majority of users.
Side effects of caffeine over-consumption range from the mild to the life threatening: dizziness, irritability, elevated heart rate, high blood pressure, headaches, jitteriness, light headedness, nausea, to name a few.
It is downright irresponsible to potentially give people such a large dose of caffeine without them knowing about it.
Side effect risks aside, could this blend actually deliver “extended concentration”?
Well, the only answer we can give here is, possibly.
It very much depends how these powerful natural stimulants have been dosed and hoe you react to them.
Many people experience an initial rush from caffeine followed by a swift crash.
We’re sure many of you have experienced the tiredness that comes on after your coffee wears off!
It is important to note here that stimulants like caffeine do not actually increase available energy sources (as sugar does); rather, they decrease the perception of fatigue. So when you’re pulling an all-nighter trying to make that deadline, the coffee by your side isn’t actually fueling you through it; it’s just masking the symptoms of tiredness for a while.
Instant Release Proprietary Blend (75mg)
This blend contains caffeine from green tea extract and a rather unusual substance called synephrine caprylate.
The caffeine from green tea is a straightforward matter; regardless of the source, when something has been extracted and standardized, the source becomes largely irrelevant.
We therefore just have another dose of caffeine.
Since this caffeine has not been microencapsulated, it may well be metabolised much faster than the caffeine in the extended release blend. However, I imagine the difference will be slight.
In either case, the last thing this stack needed was MORE UNCERTAINTY about the caffeine dose.
It is now possible for there to be as much as 374mg of caffeine in every dose of Limidax XR. We wish we didn’t have to think about these worst case scenarios, but we do.
Synephrine caprylate is a different matter altogether.
Very few of you will have ever heard of this substance, and until I came across Limidax XR, I wasn’t familiar with it either.
Synephrine is another trace amine that can be produced in the human body. It is also found in very high concentrations in bitter orange (which doesn’t really feature in many people’s diets outside of Iran).
It is thought to be effective at increasing basal metabolic rate; this has led to it becoming a substance of interest for manufacturers of weight loss supplements.
So far though, we have yet to come across any evidence for this substance having any nootropic effects. Every reputable study we have found has focused on the weight loss benefits, enhancing fat loss for athletes, and so on. It’s very strange then to see this in a memory, concentration and focus stack.
Modulation Synergy Blend Proprietary Blend (350mg)
Rarely have we seen more buzzwords deployed simultaneously. Modulation synergy is, as far as we are concerned, a meaningless phrase. That said, it deserves a closer look and proper analysis.
Many of you will already be quite familiar with green tea and the cognitive benefits to be had from drinking it. We will therefore refrain from labouring the point, and state simply that green tea contains several compounds that are beneficial to cognitive function, as well as general health and well-being.
One of the most important of these is theanine. This amino acid works synergistically with caffeine, amplifying its energy and focus-boosting properties while subduing some of caffeine’s more unpleasant side effects. Unfortunately, we don’t know how much of this green tea extract is theanine – if any.
If you wish to learn more about theanine, visit our dedicated ingredients page.
You can find plenty of information on polyphenols in green tea online, so we need not go into it here.
However, we do need to talk about the other substance in this blend: glucuronolactone.
Or perhaps more accurately, we need to talk about how little there is to say about glucuronolactone. We have seen this substance in nootropic stacks before, and we are baffled as to how it is finding its way into supposedly professional, high quality memory enhancing supplements.
We are not aware of a single nootropic property possessed by glucuronolactone.
One study has supposedly found that it has some physical performance enhancing effects. Rats were supposedly fed a range of substances before being made to swim. These substances included glucuronolactone, glucose and glycogen. After 30 minutes, the rats were made to swim 3 times consecutively, and the glucuronolactone-fed rats recorded the fastest times.
Aside from the fact that the rats fed simple sugars probably experienced a sugar crash shortly before the swim, this study is of no benefit to anyone looking to enhance their memory, creativity, or capacity for learning.
All in all, a confusing inclusion, particularly alongside theanine (a well understood and effective nootropic).
Is It Safe? – Limidax Side Effects
When we’re dealing with a proprietary blend, it’s almost impossible to give you an accurategauge of what side effects are going to be like.
Side effect risks and severity are both intimately linked to the dose in question.
A substance that is benign at 50mg might be downright lethal over 500mg.
That’s one of the reason we hate proprietary blends.
With so many other nootropics out there which reveal their full formula on the label – with each ingredient shown next to its serving size – it’s hard to justify gambling on a product that doesn’t do the same.
The fact that the stack contains more than one source of caffeine, in more than one blend, is a SERIOUS problem!
Prop blends are one thing, but not knowing how much caffeine you’re consuming on a daily basis is quite another.
For all we know, there could be well over 300mg of caffeine in each serving of Limidax.
Side effects of consuming too much caffeine include:
You need to carefully consider how much caffeine you’re already taking before adding in more through supplements.
Caffeine over dose can be fatal, after all.
For us, the uncertainty created by the use of prop blends makes this stack more dangerous than it needs to be!
We are not doctors! This is not medical advice. It is crucial that you do your own research before continuing, and that you seek the advice of a qualified health professional. Don’t gamble with your health, and don’t try to treat serious cognitive decline with supplements you bought online. Talk to a doctor.
We are not doctors!
This is not medical advice.
It is crucial that you do your own research before continuing, and that you seek the advice of a qualified health professional. Don’t gamble with your health, and don’t try to treat serious cognitive decline with supplements you bought online. Talk to a doctor.
Conclusion – Should I Take Limidax XR?
Overall, we were very disappointed with the Limidax XR formula.
Some manufacturers can get away with having their formula broken down into different proprietary blends, provided that those blends are sufficiently large to make under-dosing unlikely, and provided that the main ingredients are not paired up with potential “fillers”.
Limidax XR, however, doesn’t quite get away with having proprietary blends in their formula.
Some of the blends contain ingredients that have no nootropic properties to speak of. Since these are paired with ingredients we would actually like to see in a nootropic stack, I can’t help but feel we’re missing out on solid ingredients for the sake of useless fillers.
This isn’t necessarily a purposeful decision on the part of the manufacturers; it is more than likely the result of plain old bad decision-making.
The biggest problem with the formula by some margin is the lack of any ingredients that have any real “bite”. The “brain support stack” is where I would have expected to find some form of cholinergic (Citicoline, Alpha GPC, etc.), perhaps some Huperzine A, and definitely some Bacopa monnieri or Ginkgo biloba.
Yet there’s none of that in there.
In our opinion, if you’re looking for a stack to help enhance your cognitive function, both in the short and long-term, you are better off finding a more potent and wide-ranging stack than Limidax XR.