Olympus Labs RE1GN Review


  • Citrulline shown to improve muscle pumps
  • Contains Caffeine


  • Big dosage of Caffeine (300mg per serving) can cause jitters
  • Contains 2 stimulants (increases risk of side effects)
  • Numerous ineffective ingredients
  • Contains a proprietary blend

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About The Product

RE1GN is a pre-workout supplement by Olympus Labs, released in 2017. It’s believed to be one of their most ‘intense’ pre-workouts so far, but we’ll be the judge of that…

Re1GN costs $39.99 for 20 serving containers – which is the same price as our favorite pre-workout supplement, so we’re expecting big things.

Olympus Labs’ pre-workout also comes in 5 flavors; Area 51, Dragon Mist, Krusherz, ISEE FURY and Lions Blood.

Anyway we’ll tell you a bit about the company behind this product (for those that don’t know), before analyzing RE1GN’s nutrient profile.

Who are Olympus Labs? 

After trying to find out about Olympus Labs, we were disappointed by their ‘about us’ page on their website.

It didn’t tell us anything about their company – important information such as when they were founded and whether their products are made in cGMP & FDA approved facilities…

Anyway, what we do know is RE1GN’s ingredients, so we’ll analyze this for you below.

Olympus Labs RE1GN Ingredients Explained

Olympus Labs RE1GN contains 13 ingredients overall, which is more than is needed; we prefer pre-workouts containing under 10 ingredients, as long as they’re dosed effectively (usually the problem with products containing more than 10 is that no ingredients are optimally dosed).

But that’s not the only problem – Olympus Labs RE1GN contains a proprietary blend, which we always try to avoid. We’ll explain why below…


Proprietary blends are mixtures of numerous ingredients that’re only shown to you as 1 quantity. As you can see from the ‘Intense Energy Matrix’ on Olympus Labs RE1GN’s ingredient list, the overall amount is 4,459mg – but you’re not shown the dosages of each ingredient inside such as Caffeine.

This increases your risk of side effects, and also makes it uncertain whether this pre-workout will work. For this reason, we try to avoid any supplement that contains proprietary blends.

Anyway, we’ll take you through each ingredient – so you can see how effective Olympus Labs RE1GN really is.


Here’s Everything You Need To Know:


This is the best ingredient shown to enhance muscle pumps – but if we’re being picky, we do prefer Citrulline Malate (as this improves strength levels too).

Anyway, if you’re consuming L-Citrulline, you need a dosage of at least 3,000mg; as Olympus Labs RE1GN contains 5,000gm (5g) it’s been dosed well here.

Good start.

Agmatine Sulfate 

We don’t understand why so many supplement companies add Agmatine Sulfate into their pre-workouts.

Basically, it’s not shown to offer any benefits in any study conducted – making it a useless ingredient. The only good thing here, is that Agmatine Sulfate isn’t part of a proprietary blend.

Pomegranate Powder Extract 

As you can see, this is simply powered pomegranate. It’s believed to improve general health and might have a positive effect on fat loss.

However, no study have shown whether it improves your gym session – meaning pomegranate is an ineffective ingredient in Olympus Labs RE1GN.

Vaso 6 

If you haven’t heard of this ingredient before, it’s because it’s not proven to work. It’s believed to improve muscle pumps – but in reality, it’s simply a patented ingredient marketed through unreliable information.


Intense Energy Matrix 

This is the proprietary blend that’s part of Olympus Labs RE1GN. As we mentioned at the start, the dosages of each ingredient are hidden from you – as you only know the overall quantity of the blend.

This is apart from Caffeine – as you can see from the ingredient list, Caffeine is the only ingredient with the dosage shown to you (300mg).

But one thing we do know are the ingredients inside, so let’s see:

Caffeine Anhydrous 

Caffeine is the best stimulant you can find in pre-workouts; it’s proven to be safe and effective in dosages under 200mg per serving.

But here’s the problem – there’s a big 300mg dosage of Caffeine in Olympus Labs RE1GN (meaning you might suffer from jitters and energy crashes).

For this reason, we always recommend that you consume less than 200mg Caffeine per serving in pre-workout supplements – to avoid side effects.

Eria Jarensis Extract 

This is another stimulant that’s believed to offer similar effects to Caffeine. But not much is known about Eria Jarensis (making it unreliable and potentially harmful).

As we mentioned, Caffeine is the best & safest stimulant available. Not only that, as there’s already a big dosage of Caffeine inside Olympus Labs RE1GN, there’s no need for any additional stimulants here.

Ultimately, Eria Jarenesis Extract has only increased your risk of suffering from jitters and energy crashes.

Juglans Regia Extract 

If you’re wondering what this is, Juglans Regia Extract is used due to being a natural source of DMHA. Simply put, DMHA is believed to be another stimulant – but it’s not as researched as Caffeine either (making it unreliable).

For this reason, we don’t recommend consuming Juglans Regia Extract or DMHA, to stay safe.



We’re specialists in the supplements industry, but even we don’t know much about Stim-X. Basically, it’s another ingredient believed to offer similar benefits to Caffeine…but as Stim-X isn’t proven to be safe or effective in any studies, we recommend avoiding it (at least until more research has been conducted).


Theacrine is more known than other stimulants in the ‘Intense Energy Matrix’ blend (apart from Caffeine), but it’s still unsure how safe Theacrine is.

Early signs show promising results, but we won’t be consuming Theacrine until studies have 100% proven it’s beneficial and safe (after all, Caffeine is consumed in both tea & coffee on a daily basis – while Theacrine isn’t).


Another ingredient that isn’t popular in the supplements industry – it’s believed to reduce stress and anxiety, but it hasn’t proven to benefit your gym session in any studies – making it unreliable.


This is a patented ingredient that’s believed to improve sporting performance by increasing your blood flow. However, we haven’t seen any non-bias studies, making this another unreliable ingredient.


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Top 3 Pre-Workouts Page

Side Effects

The worst thing about Olympus Labs RE1GN is the number of stimulants; as well as a big 300mg serving of Caffeine (which puts you at risk of jitters and energy crashes anyway), this pre-workout also contains 4 other stimulants that aren’t unreliable (and haven’t proven to be safe or effective).

Here’s the potential side effects from taking Olympus Labs RE1GN: 

  • Jitters (Overload of stimulants)
  • Energy Crashes (Overload of stimulants)

Olympus Labs RE1GN Review

We don’t like pre-workouts containing over 10 ingredients for 2 reasons – because they take ages to review (my wife is calling me to get off my laptop now!), and also because in our experience, we know that the best pre-workouts contain less than 10 ingredients (as long as they’re dosed effectively).

Ultimately, only 1 ingredient has been dosed correctly in Olympus Labs RE1GN; the other 12 have been incorrectly dosed, putting you at risk of side effects and wasting your cash.

Not only that, we always recommend that you only consume under 200mg Caffeine per serving. Olympus Labs RE1GN contains 300mg Caffeine and 4 other stimulants, so you’re almost certain to suffer from jittery feelings and energy crashes here.


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2 thoughts on “Olympus Labs RE1GN Review”

  1. It enhance focus.
    But your overal review is correct.
    I also recently went through a physical and they did a metabolic test (the blood tests) and
    they found slightly elevated creatinine levels (i take creatine, maybe too much as i have read that if you take creatine you will usually get elevated creatinine levels) they also found mildly elevated liver enzymes They did a liver enzyme test because i have had an acute hepatitis C infection before (my liver enzymes are always higher on blood tests dont really know why (i also dont do drugs pointless imo)) but otherwise everything normal

    • Hi Kevin, thanks for reaching out!

      Also, thanks for sharing your experience with Olympus Labs RE1GN with us, and I hope you found this review useful. If you have any questions, please let us know!

      Best regards,


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