You'll mainly find him in the office writing reviews, researching supplements, or studying the fitness industry. When he's off his leash Doug spends his time in the gym, prepping the next meal or hanging out anywhere people will listen to him talk about fitness.
He is constantly in search for the perfect stack to keep him strong and shredded. He's been researching supplements casually and professionally for over 10 years. You can see more from Doug on his Linkedin profile here.
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4 Gauge Review – Editor’s Note:
This is our 4 Gauge review, and so far, I haven’t found a pre workout that performs better than this one.
It contains a lot of what we look for in a pre workout here at Muxcle, and after taking 2 scoops of this stuff I knew it stood a good chance of becoming our #1.
It’s one of the only pre workouts I know of that’s entirely natural – right down to the flavorings!
In this article I’ll be covering what’s in it, how the scoops and servings work – and most importantly, what the effects are like.
I had a lot of fun taking this product – and I hope you enjoy my 4 Gauge review.
What does 4 Gauge do?
4 Gauge is an all natural and vegan pre workout made by UK-based supplement company Roar Ambition.
It’s claimed to offer 4 main benefits:
- Energy Levels – Train for longer with a higher intensity in the gym.
- Strength – Lift more weight while training, and prime your body for maximum power output.
- Focus – Concentrate more during training to get the most out of your workout.
- Bigger Pumps – Feel more vascular and veiny with incredible muscle pumps while training.
This is what we’re looking for in a pre workout – but how well it work for you?
In this review, we take a closer look at 4 Gauge to see how effective it really is.
This is what we found…
4 Gauge Review – What you need to know about the ingredients:
There are no proprietary blends, and it’s manufactured in both the US and UK in cGMP and FDA approved facilities.
This is a huge plus point.
Proprietary blends are everywhere in pre workouts. This is when supplement companies hide the dosages of each ingredient used and instead groups them together under one value.
In our 4 Gauge review, we found that Roar Ambitoin are very against this, to the point that they discuss it in detail on their website. We’ve highlighted their view below:
We particularly like the part about no artificial sweeteners, too. This is a nice touch.
You can learn more of 4 Gauge’s policies over on their website:
So what about the actual ingredients?
On the whole, we were very impressed with what we saw in our 4 Gauge review. It’s a solid nutrient profile, forgiving one or two niggles.
Here’s what you need to know:
|Full Serving Size: 14 g (2 Scoops)
Serving per Container: 20
|Amount per serving||% Daily Value †|
|L-Citrulline Dl-Malate||6000 mg||**|
|Creatine Monohydrate||1000 mg||**|
|Acetyl L-Carnitine (as Acetyl L-Carnitine HCl)||500 mg||**|
|Red Beet (Beta Vulgaris) Root Extract||300 mg||**|
|Coconut Water Powder||300 mg||**|
|Caffeine Anhydrous||150 mg||**|
|Rhodiola Rosea (Root) Powder||100 mg||**|
This is one of the best amino acids on the market when it comes to muscle pumps.
Citrulline is an amino acid that is extracted from watermelons – it’s about as natural as you can get – and it’s a great vasodilator.
Vasodilators are nutrients that help to improve the dilation of your blood vessels and allow more blood to pass through them at once.
They’re amazing for muscle pumps – and citrulline is one of the better choices.
It’s also been seen to help with overall muscle endurance and increase growth hormone levels in studies too.
Studies recommend 6000 – 8000mg of Citrulline for the best effects, so with 6000mg in 4 Gauge this is about right.
A good addition to this supplement.
Creatine is an amino acid that fuels your body’s levels of ATP – which is what your muscles use for energy.
This is great for increasing both endurance and overall strength. It also allows your muscles to retain more water which can help make them denser and larger.
The only issue we would say with the Creatine in 4 Gauge however is that there’s only 1000mg – which should make some difference, but not a lot.
However, if you’re already supplementing creatine, this will be a nice supporting top-up.
A good supporting amino acid in 4 Gauge that supports your workout.
The main benefits of Carnitine are boosting energy, increasing metabolism, and to a minor extent helping focus.
This may help you to train for longer, focus more and maybe even burn a few extra calories.
Studies have shown for the best results you need between 500 – 2500mg of this amino acid per serving.
There’s 500mg in 4 Gauge, so there shouldn’t be any issue here.
Red Beet (Beta Vulgaris)
A great natural ingredient for plasma nitrate, which is great for performance.
Betaine Vulgaris has been seen in numerous studies to improve plasma nitrate in your blood – which is key for endurance.
Various studies have shown that there is clear improvement in speed and endurance that supplement Betaine. If you want to train for longer in a sport, or just in the gym, it’s a great addition.
This is a fanatastic addition to any pre workout – and one that you don’t see very often in a supplement.
It’s a good addition for adding more natural flavor to 4 Gauge, and it’s packed with electrolytes.
If you usually feel drained part-way through a session, and feel like you’re cramping up, you’re electrolyte levels will be why.
With the added boost from the coconut water in here, you should get a boost to keep you pushing through to the end.
L-Theanine & Caffeine Anhydrous (Smart Caffeine Stack)
Normally, we’d examine each ingredient individually, but caffeine and L-Theanine together produce an effect that needs its own acknowledgement.
If you know anything about brain boosters or nootropics – you’ll have probably seen the L-Theanine/Caffeine stack before.
This is known as ‘Smart Caffeine’ and one of the better ways to use this stimulant.
Studies have shown the two nutrients work together in synergy to promote:
- Longer lasting effects of caffeine
- Increased focus and calmness
- No sudden energy crashes
This is down to caffeine working as a stimulant, while L-Theanine releases calming hormones like GABA and Serotonin.
It’s a really interesting mix, and it works well. You can read my full experience with this later in my 4 Gauge review in more detail.
A Scandinavian herb that helps your mind rather than your body.
This is essentially just used to improve motivation levels. Rhodiola Rosea has been seen in several studies to help reduce fatigue and depression.
4 Gauge Review – Nutrient Profile Overview:
As far as pre workouts go, this is the best nutrient line up we’ve seen so far.
All the main bases seem to be covered. It’s great for energy, strength, focus and muscle pumps.
Everything (aside from the creatine) is effectively dosed and should give you a great session.
We particularly like the well-dosed Citrulline, as most supplement companies tend to under dosed it – and the Smart Caffeine.
It’s clearly a well-thought out product – and the only thing we’d change is maybe upping the creatine dosage.
Aside from that it’s perfect.
You can learn more about the ingredients used in 4 Gauge over on their website:
Are there any side effects with 4 Gauge?
I didn’t experience any side effects when conducting my 4 Gauge review. The main issue that you get with most pre workouts is the caffeine level – but 4 Gauge only has 150mg.
It becomes a risk after you go over 300mg.
We haven’t heard of any reports of any problems from anyone taking it.
All the ingredients are natural – and the fact that there are no artificial sweeteners make chances of this causing problems even less so.
It shouldn’t be a problem.
Can I take 2 servings at once?
Indeed you can – it’s been formulated so you can do that if you wish.
A typical serving of 4 Gauge is 2 scoops – which is 150mg of caffeine.
4 scoops takes you up to 300mg of caffeine, which is also our recommended limit for the most you can take in one serving.
You’ll still have a safe experience, and the effects will be even more intense.
I’ve tried it both ways – you can read my full report in the below:
My 4 Gauge Review – What I experienced:
As a test, for my 4 Gauge review, I bought 1 bottle of this pre workout for $45.00 direct from their website.
It contains 20 servings, or 40 scoops. If you train 5 times a week like I do – will last you about a month comfortably.
It arrived within the first few days of ordering it, and I couldn’t wait to try it out.
Here are my results.
From taking one serving of 4 Gauge:
Honestly, I think for a standard session – 1 serving of 4 Gauge is more than enough. This is how I usually take it.
It mixes well, it’s a good color and has a great sweet taste that goes down easy.
I take it around 20 minutes before I get to the gym and I feeel that’s about right timing-wise.
By the time I get to the gym, I’m amped up and ready to go.
How it feels:
I wouldn’t say you feel ‘buzzed’ or ‘jumpy’ – it’s more like a calm focus. This is definitely the caffeine/L-Theanine stack.
When I take it I’m a lot more aggressive in my sets. Usually where I’d start to break form, I can almost refocus myself and keep going. You’ll find yourself with a lot more endurance.
If you’re going for a PR on rep range of certain weight – this is the supp to take.
The pumps are great too. My arms get a lot more swollen and vascular. It feels great and you can really see it working. Seeing it in action is a plus point in itself, it really motivates you to keep pushing harder.
After the session, I don’t get the usual daze I get from other pre workouts like Hyde or the The Curse. I just feel normal and refreshed, which still allows me to go work afterwards and still be productive throughout the day.
Whether you’re in the gym, or doing sports. Taking one serving is pretty much ideal.
Learn More at
– 4Gauge.com –
From Taking 2 Servings of 4 Gauge:
I save taking 2 servings of 4 Gauge for when I’ve got a serious session coming. Either I’m going for a PR or if I want to make a good session great.
As a double serving, it’s 4 scoops in your shaker. It’s a little harder to mix, but it gets there. The flavor is a lot more intense, so be ready for that. I usually just toss it back.
How it feels:
The main benefit with double scooping is that you’re taking 12000mg of Citrulline – so the pumps are unbelievable. After I get my big lifts out the way, I can’t help but do a lot of isolation work on double 4 Gauge – it just feels so good.
You’ll find yourself lifting a lot more too. I usually find I can get an extra 5lbs on my bench if I’m completely fresh before doubling-up.
The caffeine is a lot more intense, but the L-Theanine keeps you balanced. I don’t feel overwhelmed when taking it, and still feel in complete control.
It’s a great option when you want to add more to your session – and it is something you really have to try. But I’d advise saving it for certain sessions – because otherwise you’re going to burn through this supplement.
Anything I didn’t like with 4 Gauge?
The only issue I had with the product itself was that it could use more creatine. 1000mg isn’t enough for the full effects.
However, if you’re already supplementing creatine this won’t apply to you.
The only other issue was buying the product – you can only purchase 4 Gauge from their website: https://www.4gauge.com/
Which is annoying if you’re used to buying your whole stack from the same place like Bodybuilding.com or GNC.
But it’s quick enough and you can use your PayPal account to make it happen faster.
It ships out pretty quick too, I got mine within a few days.
11 Reasons Why 4 Gauge is the Best Pre Workout:
#1. Best nutrient profile we’ve seen in a pre workout – and suitable for vegetarians and vegans.
#2. Incredible pumps (6000mg of Citrulline!)
#3. Great for focus and energy (Smart Caffeine stack of L-Theanine/Caffeine combo)
#4. Boosts Strength
#5. Backed up by clinical studies.
#6. No energy crashes.
#7. No proprietary blends.
#8. No artificial sweeteners (4 Gauge is 100% natural).
#9. I had great personal results.
#10. Can take two servings at once.
#11. Fast shipping.
4 Gauge Review Conclusion – Is it effective?
On the whole, this is the best pre workout I’ve ever tried. After finishing 4 Gauge, I ordered anothe bottle.
It’s a great, natural, and effective pre workout that gives your body exactly what you need to be pumped-up, strong and focused.
I still use it most sessions and definitely use it whenever I need a pick-me-up.
If you’re on the fence about using 4 Gauge, I strongly suggest you try it out. It beats what’s out there at the moment by far.
You can find out about it on their website: