Best Supplements for Endurance Athletes

pre workout for athletes cyclist training

Whether you’re a professional swimmer, runner, or just someone who’s trying to boost their stamina and endurance. This article about best supplements for endurance athletes will cover all the answers to your questions!

Here we’ll talk about best supplements that work for;

  • Improving recovery times
  • Boosting endurance
  • Increasing stamina
  • Enhancing overall energy levels

We’ll guide you through their ingredients, benefits, and more – showing you what you should watch out for when choosing these supplements.

As you already know, there are tons of supplements on the market that don’t work. What’s worse, now we have products that contain aggressive ingredients that cause side effects. As a result, it’s no wonder that people are confused with all this nonsense in the supplement industry.

But don’t worry. With some knowledge, it’s possible to choose a safe and effective supplement. After all, that’s what we’re here for – to give you the info necessary for choosing the best supplements for your goals.

By the end of this article, you’ll know everything about best supplements that improve your stamina, recovery, endurance and more.

So without any further ado, let’s get right into the article!

Pre-Workout Supplements

Pre-workouts are one of the best supplements for endurance athletes for multiple reasons.

First of all, they give you raw materials for boosting energy. The best pre-workouts on the market contain legal and safe ingredients which enhance your body’s energy production. They do so through your metabolism, kicking it into high gear to produce more energy for the body.

best supplements for endurance athlete pre workouts

Next, pre-workouts increase your focus. Not only will you have more energy to continue that run, you’ll also stay more concentrated on your goals ahead. Basically, a good pre-workout will make your brain work faster and sharper, allowing you to push through “mind games” when you’d normally give up.

Another reason why pre-workouts are among the best supplements for endurance athletes is their safety. That’s right; a good pre-workout will deliver you safe results. They contain 100% natural and legal ingredients that you can rely on for boosting your endurance.

Last but not least, a good pre-workout will make you more confident. Not only you’ll be stronger, look better, but you’ll also feel more confident in your own skin. The best pre-workouts will make you do things you thought you weren’t capable of – be it on the pavement, in the gym, or in the swimming pool.

Overall, these are the benefits you’ll experience from taking a pre-workout;

  • Improved Stamina and Endurance
  • Energy Boost
  • Enhanced Recovery
  • Sharp Mind and Focus
  • Look and feel more resilient

What makes a great pre-workout?

There are a few basic things you need to look out for when choosing a pre-workout.

First of all, you need to see if there are proprietary blends in the supplement. If there are, avoid it at all costs. With proprietary blends, you can’t tell how much of each ingredient you’re getting.

Secondly, you need to check for ingredients themselves, as well as their dosages. They must come at high enough dosages to give you the benefits, but also low enough to not give you any side effects.

You also want to make sure that the ingredients are 100% natural and safe. You don’t want to be putting chemicals in your body, do you?

Lastly, make sure the company behind the product has a good reputation. If you’re looking for best supplements for endurance athletes, you’ll want to make sure that the company is well-trusted.

Best Ingredients In A Pre-Workoutbest supplements for endurance athlete ingredients image

Not all pre-workouts are created equal. Some contain good ingredients, some contain bad ones. Then there are those that are completely pointless, or even dangerous for health.

For this reason, here we’ll list the best ingredients found in a pre-workout, as well as the worst ones.

Let’s start with the best ingredients:


Creatine Monohydrate is one of the most researched, if not THE most researched supplement ingredient on the market. It’s easy to take, safe, and it works.

Most people supplement it separately, because many pre-workouts don’t come with creatine as the ingredient. Which is sad, because this is one of the best ingredients for endurance athletes out there.

How does it work?

Well, basically, Creatine restores your ATP reserves. This is your body’s main energy unit.

With more ATP in the body, you’ll experience higher energy, strength, and endurance levels. It will also improve your stamina.

This is great when you need to squeeze out those last few reps in the gym, or a few miles or running, or anything really. Creatine is fantastic for anything that involves prolonged physical activity – making it a crucial ingredient in best supplements for endurance athletes.

The optimal dosage?

If you want to supplement indefinitely, then you’d want to take around 1,000mg of creatine daily. This is a safe and effective dose for long-term supplementation.

But if you want, you can safely take up to 5g of creatine per day. It all depends on your personal preference.

Still, we’d suggest keeping the dosage lower, because there’s no need to supplement too much – you’ll still experience full benefits with 1,000mg of creatine per day.

Caffeine and L-Theanine Combo

Caffeine and L-Theanine are a popular combination among supplement users, for a good reason. They both work great on their own, but when you combine them, you get a killer combo.

Let me explain what I mean…

Caffeine works by stimulating your nervous system and boosting energy levels. On the other hand, L-Theanine boosts brain focus, and makes you relaxed without causing drowsiness or fatigue.

So when you combine both of these supplements together, you get;

  • Long lasting energy boost.
  • You’ll feel stimulated, focused, but also relaxed at the same time.

Also, if you’ve tried caffeine before, you know how harsh the ‘crash’ can be. You know that feeling; when caffeine stops working, and you feel restless, irritable, and just terrible.

Well, with L-theanine, you’ll completely avoid these crashes. It controls the caffeine’s stimulating effects, allowing for smoother and better experience.

Overall, this combo is key in best supplements for endurance athletes.

L-Citrulline Di-Malate

Citrulline is an amino acid found in watermelons. Its primary function is to improve your blood flow.

Here’s how it works: After entering your bloodstream, Citrulline massively increases your nitric oxide levels. This, in turn, dilates your veins, allowing for more blood to pass through.

And guess what: this results in improved stamina and energy levels.

The bonus benefit you’ll get from this is that you’ll look more ripped and vascular. This is especially good for people who train in the gym, it will make your muscles look much bigger and leaner.

However, make sure to watch out for the dosage of L-Citrulline. Many pre-workouts underdose this supplement, making it ineffective.

The optimal dosage is between 5,500-6,500mg. Anything below that is not worth your time or money.


L-Carnitine is another highly-researched amino-acid shown to reduce muscle fatigue and damage while promoting energy.

This is a great compound in any pre-workout supplement; it’s safe, and works.

This amino acid will help you feel energized, which is very important if you need to push yourself physically and mentally.

It will also reduce cortisol spikes during physical activity, reducing muscle tissue damage and improving recovery times.

The optimal dosage? Around 500mg.

Okay, now for the worst ingredients:

Worst Ingredients In A Pre-Workoutbest supplements for endurance athlete worst ingredients

Bitter Orange and Yohimbe Extract

Best supplements for endurance athletes won’t contain any of these two ingredients.

They are aggressive, with studies showing very little benefits from these ingredients. The only possible benefit is a minor fat loss.

However, the problem with these aggressive compounds is that they cause negative side effects. Here are some of the negative side effects reported by users;

  • Headaches
  • Panic Attacks
  • Vomiting
  • Irregular Heartbeat
  • High Blood Pressure

As you can see, any minor benefits that these two ingredients might provide are completely overshadowed by their negative side effects. Making them ingredients you want to avoid.


Beta-alanine can be beneficial for some, but its side effects make it not worth the benefits.

Ever felt tingly or itchy after taking a pre-workout supplement? That’s beta-alanine.

It distracts you and prevents you from staying focused on your goals. While it’s not really a harmful side effect, it’s a rather uncomfortable one.

The Best Pre-Workout

Okay now for the best pre-workout on the market. Without any dwelling, here is the best pre-workout we’ve found;

#1 Pre-workout currently on the market: 4Gauge

4Gauge is a powerful pre-workout supplement with a unique design and premium features. It comes in a shotgun shell bottle, and it’s designed to ramp up your strength, stamina, endurance, and overall energy levels.

It does so with its 100% natural and safe ingredients, ensuring best results with no side effects.

4Gauge is produced by a premium supplement company Roar Ambition. This company has a history of producing high-quality products that are one of the best in the world.

In regards to 4Gauge, here’s what you’ll experience from taking it;

  • Sustained and high energy levels
  • Improved endurance and stamina
  • Sharp mental focus
  • Increased motivation

best supplements for athletes pre workout image

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Containing all-natural, safe, and 100% transparent ingredient profile, 4Gauge offers much more than just a fancy package. Although skeptical at first, we were positively surprised with what we saw under the hood – top-quality, premium ingredients.

Some of the key ingredients in 4Gauge:

  • L-Citrulline Di-Malate
  • Caffeine and L-Theanine (Smart Caffeine Combo)
  • Rhodiola Rosea
  • Creatine
  • L-Carnitine

The best thing about 4Gauge is that it gives you clean, sustained energy, without any jittery feeling. You don’t need to worry about crashes or comedowns with this supplements – it’s completely safe, and it works.

However, no supplement is perfect, and the same is with 4Gauge. Let’s take a look at its pros, and cons.


  • Clean and sustained energy
  • Safe and effective ingredients
  • Boosts endurance and stamina
  • Bigger muscle pumps


Conclusion on 4Gauge

Overall, 4Gauge is the best pre-workout supplement we’ve come across, and one of the best supplements for endurance athletes.

If you want to take your results to the next level, look no further than this one.


Fat Burners

best supplements for athletes fat burners

You might be asking; Fat Burners for endurance athletes? What?

However, before making any conclusions, listen up.

The truth is, the best fat burners aren’t just great for burning fat. They also offer you a host of other benefits. These include;

  • Jolts of energy – thermogenic compounds in a fat burner speed up your metabolism, making your body produce more energy.
  • Improved stamina – with fat burners, you’ll start using fat as your primary fuel source. The thing with fat is, it’s more stable than glucose, and it burns slower. Meaning, you’ll keep high energy levels for long periods of time.
  • Improved body composition – With more muscle and less fat, your body will be lighter, faster, and stronger. Ultimately, this will allow you to run or swim greater distances, or do more reps in the gym; anything that involves physical activity, basically.

So as you can see ironically, fat burners are much more than just – fat burners.

Now, there are a lot of scam products out there, so you need to be careful with your choice. But if you follow some of these guidelines, you’ll greatly reduce the risk of getting the wrong product;

  • Quality ingredient profile – you only want safe and natural ingredients, just like with pre-workout supplements. This will ensure results that are sustainable, and safe for your body.
  • No proprietary blends – I don’t care how premium the ingredients are, if you can’t see their dosage, it’s a no-no. You want a fully-transparent ingredient profile which will show you each ingredient and its respective dose. Blends and mixes are not allowed!
  • An optimal number of servings – you want 3-4 servings in a fat burner. This will give you a sustained release of key nutrients that give you energy.

Ingredients within a fat burner

Just like with other types of supplements, there are good, and there are bad ingredients in fat burners.

best supplements for athletes fat burner image

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As always, let’s check out the best ingredients first:

  • Green Tea Extract – great for improving your metabolism, making your body produce more energy
  • Cayenne Pepper – a powerful thermogenic stimulant, it will help you use fat for energy while improving overall energy levels
  • B Vitamins – B vitamins, especially B6 and B12, play a key role in energy metabolism. If you’re deficient in them, you’ll feel more fatigued and groggy. With the optimal dose of these ingredients, you’ll feel alive, energetic, and ready to crush your goals.
  • GTF Chromium – A trace mineral important for controlling insulin, among other benefits. It will prevent sudden insulin spikes, giving you a sustained energy output.

Other good ingredients in a fat burner include;

  • Caffeine
  • Glucomannan
  • Calcium Carbonate
  • Zinc

The worst ingredients in a fat burner:

The worst ingredients in a fat burner are the same as with pre-workouts. They are;

  • Bitter Orange Peel/extract
  • Yohimbe Bark Extract

Although they come from natural sources, these ingredients contain aggressive compounds and can be harmful to your health. For this reason, avoid them at all costs.

The Best Fat Burner

Right now, the best fat burner on the market is Instant Knockout.

This product ticks all the boxes in terms of quality, safety, and effectiveness. It contains a mixture of clinically dosed, 100% natural ingredients that work to improve metabolism, energy levels, and burn fat.

Its three core ingredients are cayenne pepper, green tea extract, and caffeine. These will boost your metabolism, helping your body to utilize energy more efficiently.

Key benefits you’ll experience from taking Instant Knockout:

  • Improved energy metabolism – you’ll more energy during physical activity.
  • Enhanced muscle mass, less fat – with better body composition, you’ll move and feel better. Ultimately, this will help you have better training sessions.
  • Fatigue reduction – you’ll won’t feel as tired, and you’ll be able to do any physical activity for longer

All in all, Instant Knockout is a great product for not just people who want to burn fat, but also for athletes who need that extra edge in terms of stamina and energy.

Energy Bars

best supplements for endurance athletes energy bars

Energy bars aren’t necessarily best supplements for endurance athletes, but they can give you a serious kick of energy.

They are convinient, they taste great, and are somewhat healthy.

However, with hundreds of brands, it’s easy to choose an energy bar that will give you all but energy. In fact, many of these bars contain tons of artificial ingredients that are harmful to your health in the long run.

So what should you do? Well, first off, you want to check the ingredients, and make sure they are high-quality.

Here’s what you want in an energy bar:

  • High-quality proteins (plant protein, whey protein isolate, nuts, pumkin seeds)
  • Healthy mix of complex and fast-acting carbs (maltodextrin, oats, berries, yams)
  • Short list of ingredients (self-explanatory, you don’t want tons of added stuff in there)
  • Natural sweeteners
  • Only a few processed ingredients (none if possible)

Here’s what you need to avoid in an energy bar:

  • High-corn fructose syrup – numerous studies show it to be dangerous for health in the long-run
  • Whey protein – only for those who are allergic or lactose intolerant
  • Artificial sweeteners – this includes Splenda and aspartame
  • Flavor enhancers or processed additives
  • Palm oil – a cheap oil that is shown to increase the risk of developing cancer

Energy Bars Pros and Cons


  • Quick and short energy boost
  • Convenient
  • Tasty


  • Doesn’t give a sustained energy boost
  • Many energy bars are difficult for the body to digest
  • Poor in nutrients, only contain calories from sugars

Conclusion on Energy Bars

Overall, energy bars are a great way to snack before dashing out for a run or a workout. They are simple and convenient.

But are they the best way to increase your energy and stamina? Do they fall among the best supplements for endurance athletes?

No, they do not.

Energy bars are just that – a bar which gives you a temporary boost of energy, after which you’re back to baseline.

If that’s your goal, then great. Energy bars can be really beneficial for a quick energy boost when you need it. Just make sure to choose the one that is healthy, and has good ingredients.

But for best supplements for endurance athletes, you’ll need to look elsewhere.

Other Supplements

There are countless supplements besides pre-workouts, fat burners, and energy bars that boost energy.

However, most of them aren’t really that efficient. Some even come with negative side effects.

For this reason, we’ve made this list of the 5 best supplements for endurance athletes that actually work. Take a look:

#1 Creatine Monohydrate

best supplements for athletes creatine

Ideally, you’d want to take a pre-workout which contains creatine.

However, if for some reason you’re unable to do so, then separately supplementing with creatine would be a good idea.

#2 Caffeine

best supplements for athletes caffeine

Again, this is an ingredient you’ll find in most sports supplements, so supplementing it separately isn’t really the best idea.

Caffeine by itself won’t give you that much of an energy boost; it’s better when combined with other ingredients.

However, it can be good if you need some extra focus and motivation.

#3 BCAAs

best supplements for athletes bcaa's

BCAAs can help provide your body with nutrients during prolonged physical activity. So if you’re dashing out for a long run, swim, or workout, BCAAs can help you out.

They will keep you awake for longer, and possibly give you slightly more energy.

#4 Protein

best supplements for athletes protein

If you’re an endurance athlete, you need protein. If you’re stressing your body out for long periods of time, you increase the chance of muscle loss. And as we all know, less muscle means less strength and energy. Not to mention you’ll look weaker, too.

So make sure to add a protein supplement if you don’t get enough of this macronutrient through your diet (which you should!)

#5 Glutamine

best supplements for athletes glutamine

Glutamine deserves its place among the ingredients in best supplements for endurance athletes, and for a good reason.

We’re talking about the most prevalent amino acid in your body. It gets drained with prolonged physical activity, which can cause muscle loss and extreme fatigue.

So if you’re an endurance athlete, consider supplementing with glutamine – it might help you quite a bit. Glutamine is definitely one of the best supplements for endurance athletes.


So there you have, that’s our list of best supplements for endurance athletes.

As you can see, there are many options out there, so make sure to do your research and choose wisely. After all, it’s your money, and you want to spend it on something that will actually benefit you.

But if you’re looking to increase stamina and endurance, I’d suggest taking a look at pre-workouts and fat burners.

They combine multiple ingredients that work, which means that you won’t need to be buying any ingredient separately. Right now, they are the leaders among best supplements for endurance athletes.

Energy bars are good if you’re looking for a quick energy boost, but that’s about it.

For long-term results, pre-workout and fat burner supplements are currently the best out there. They’ll improve your energy, stamina, and you’ll look better too!

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