600mg Caffeine Pre-Workouts: Highest Stim Options in 2024

by Nader Qudimat
Updated December 21, 2023

If you're looking for a pre-workout that packs 600mg caffeine, you've come to the right place.

Here we'll list the best 600mg caffeine pre-workouts.

These are not for the faint-hearted but for those who want an extra kick to power through intense workouts.

Let's get started....

600mg Caffeine: Quick Overview

High-dose caffeine pre-workouts are a type of pre workout supplement designed to enhance performance and energy levels during workouts.

They contain significantly more caffeine than traditional pre-workouts, often around 600mg per serving.

Best 600mg Caffeine Pre Workouts

600mg caffeine pre-workouts are designed for serious athletes who need an extra energy boost.

They typically contain a blend of ingredients designed to enhance performance, with caffeine being the star player.

But it's not just about the caffeine - these pre-workouts also pack in other performance-enhancing ingredients.

Remember, a 600mg caffeine dose is on the higher end of the spectrum, offering a potent energy boost for those who need it.

This level of caffeine isn't for everyone and should be approached with caution. To see more pre-workouts organized by caffeine amount, visit this page.

Let's break them down:

Assassin v7 by Apollon Nutrition

Well Rounded DMHA Pwo
Assassin v7 by Apollon Nutrition

Assassin v7 is the next best pre workout coming from Apollon Nutrition

  • Massive formula of ergogenic aids and stims
  • Long lasting energy (literally all day)
  • Half scoop is enough for most people
Ingredients: 4g Citrulline, 3.5g Beta Alanine, 2.5g Betaine Anhydrous, 2g Tyrosine, 1g Agmatine, 1g Lion's Mane, 300mg Grape Seed Extract, 50mg AstraGin, 30mg Noopept
Stimulants: 500mg PEA, 300mg Eria Jarensis, 450mg Caffeine Anhydrous, 200mg Di-Caffeine Malate, 75mg Higenamine, 75mg Hordenine, 2mg Yohimbine, 1.5mg Alpha Yohimbine
Discount code: FITFREK
FitFrek earns a commission if you click this link and make a purchase, at no additional cost to you.

Assassin v7 by Apollon Nutrition is a pre-workout supplement that boosts energy, focus, and endurance.

It contains potent ingredients, including exotic stimulants like DMHA and eria jarensis.

The formula of Assassin v7 is quite comprehensive, with each ingredient contributing to a specific aspect of your workout.

The main ingredient is caffeine, with a hefty dose of 600mg per serving. Caffeine can improve endurance, strength, and power output, making it a staple in many pre-workout supplements.

Another key ingredient in Assassin v7 is L-citrulline, a non-essential amino acid that boosts nitric oxide production in the body.

Nitric oxide is a vasodilator, meaning it relaxes and widens your blood vessels, allowing for increased blood flow to your muscles during workouts.

This can lead to better performance and more noticeable muscle pumps.

Assassin v7 also includes Beta-Alanine, a naturally occurring beta-amino acid that enhances muscular endurance.

Beta-Alanine can help delay muscle fatigue and extend your workouts by buffering the accumulation of lactic acid in your muscles.

The formula also includes a blend of other ingredients like L-Tyrosine, Agmatine, DMAE, and Bioperine, each contributing to the product's overall effectiveness.

L-Tyrosine is an amino acid that can improve focus and cognition, Agmatine is a powerful pump-inducer, DMAE can enhance mood and brain function, and Bioperine can improve the absorption of other ingredients.

However, it's important to note that Assassin v7 is a high-stimulant pre-workout. With 600mg of caffeine, it's one of the highest caffeine-containing pre-workouts on the market.

In terms of taste, Assassin v7 has a pleasant flavor, which is always a plus when it comes to pre-workout supplements.

But the focus here is clearly on performance enhancement rather than taste.

Assassin v7 is a potent pre-workout supplement that can significantly enhance your workout performance. It's best suited for experienced athletes familiar with high-stimulant pre-workouts.

Read our review of Assassin here.

Hoolgain Pre-Workout by Apollon Nutrition

Hooligan Pre Workout by Apollon Nutrition

Hooligan is a strong pre-workout coming from Apollon Nutrition, with balanced pumps, and focus, and doesn't use any exotic stimulants.

  • High energy pre-workout
  • Great pumps and nitric oxide support
  • Excellent focus and drive
Ingredients: 8g Citrulline, 3.2g Beta Alanine, 2.5g Betaine Anhydrous, 2g Tyrosine, 1.5g Agmatine Sulfate, 1g Lion's Mane, 600mg Alpha GPC (50%), 400mg Grape Seed Extract, 300mg Himalayan Pink Salt, 300mg Rhodiola Rosea, 150mg elevATP, 50mg AstraGin
Stimulants: 500mg Theobromine, 450mg Caffeine, 200mg Caffeine Malate, 100mg CoffeeBerry
Discount code: FITFREK
FitFrek earns a commission if you click this link and make a purchase, at no additional cost to you.

Hooligan Pre-Workout is a high-stimulant supplement known for its potent caffeine and long-lasting energy.

Made by Apollon Nutrition, the same creators of the Assassin Pre-Workout, Hooligan is a force to be reckoned with in the pre-workout market.

Hooligan Pre-Workout is packed with various ingredients designed to enhance your workout performance.

The formula includes 600mg of caffeine anhydrous, 7 grams of L-Citrulline, and 300mg of Alpha GPC.

The caffeine content is among the highest on the market, providing a significant energy boost for those intense workout sessions.

L-Citrulline is included for its benefits in enhancing nitric oxide production, improving blood flow and better muscle pumps during your workout.

Alpha GPC, a type of choline compound, is known for its cognitive-enhancing properties, helping to improve focus and mental clarity during training.

The high caffeine content means you'll experience a significant energy boost, which can benefit those intense, heavy lifting sessions or endurance workouts.

Adding L-Citrulline and Alpha GPC means you're getting an energy boost, enhanced muscle pumps, and improved mental focus.

Hooligan Pre-Workout is a powerhouse supplement designed for serious athletes and gym-goers.

The high caffeine content and effective doses of performance-enhancing ingredients make it a strong contender in the pre-workout market.

Our review on Hooligan can be found here.

Who’s 600mg Caffeine Pre-Workouts For

If you're an experienced athlete or gym-goer used to high-intensity workouts and high-stimulant pre-workouts, a 600mg caffeine pre-workout could be just what you need to take your performance to the next level.

It's also a good fit for those with a high caffeine tolerance who find that lower-dose pre-workouts don't cut it.

Who’s 600mg Caffeine Pre Workouts Not For

If you're new to pre-workouts or have a low tolerance to caffeine, these high-stimulant options might not be for you.

They're also not recommended for those with certain medical conditions or those who are pregnant or breastfeeding.

Pros and Cons of 600mg Caffeine Pre Workouts

Like anything, 600mg caffeine pre-workouts have their pros and cons.

Plus, they can significantly enhance your performance, energy, and focus. On the downside, they can lead to caffeine-related side effects like jitters, insomnia, and rapid heart rate.

600mg Caffeine: A Deep Dive

Caffeine is a well-known stimulant often associated with coffee and energy drinks.

However, it's also common in pre-workout supplements, particularly in high doses such as 600mg.

This section will delve into the uses, research, and safety of heavy doses of caffeine, specifically 600mg, in the context of pre-workout supplements.

The Role of Caffeine in Pre-Workouts

Caffeine is a central nervous system stimulant that can help enhance mental and physical performance.

It's often included in pre-workout supplements to help increase energy, improve focus, and reduce perceived exertion during exercise.

This makes pushing through tough workouts and achieving your fitness goals easier.

In pre-workout supplements, caffeine is often combined with other ingredients such as amino acids, creatine, and beta-alanine to enhance its effects.

However, the amount of caffeine can vary widely between different supplements.

Some contain moderate amounts of caffeine, while others, like 600mg of caffeine pre-workouts, contain very high doses.

The Research Behind Heavy Doses of Caffeine

Several studies have investigated the effects of high-dose caffeine supplements on exercise performance.

For instance, the International Society of Sports Nutrition has found that consuming energy drinks containing caffeine 10-60 minutes before exercise can improve mental focus, alertness, and anaerobic performance.

However, the potential additive benefits of other nutrients in these drinks remain to be determined.

Another study by the same organization concluded that caffeine intake can enhance exercise performance. However, the effects can vary depending on the individual and the type of exercise.

Safety of 600mg Caffeine Pre-Workouts

While caffeine can enhance exercise performance, it's also important to consider its safety, especially at high doses.

According to a review on multi-ingredient pre-workout supplements, indiscriminate use, especially if more than one serving per day is consumed, may lead to adverse events and harmful side effects.

It's essential to use 600mg of caffeine pre-workouts responsibly and consider potential side effects, such as increased heart rate, insomnia, and nervousness.

It's also recommended to consult with a healthcare provider before starting any new supplement regimen, especially if you have underlying health conditions or are taking other medications.

So 600mg of caffeine pre-workouts can potentially enhance exercise performance, but they should be used responsibly due to the high caffeine content.

More research is needed to fully understand the benefits and risks of these supplements, especially in the long term.

Downsides and Dangers of 600mg Caffeine Pre-Workouts

While caffeine is a common ingredient in pre-workouts, it's important to understand that high doses, such as 600mg, can have potential downsides and risks.

Understanding Caffeine

Caffeine is a stimulant that affects the central nervous system. It's known for its ability to enhance alertness and fight fatigue.

In the context of workouts, caffeine can improve performance, increase power output, and reduce perceived exertion, making your workouts feel easier than they are.

However, these benefits often come with a cost when consumed in high doses.

Potential Downsides

High doses of caffeine, like the 600mg found in some pre-workouts, can lead to several potential downsides. These can include:

  • Jitters and Anxiety: Caffeine stimulates the nervous system, which can lead to feelings of anxiety and restlessness. This is often described as the "jitters".
  • Sleep Disruption: Caffeine can interfere with your sleep patterns, making falling or staying asleep harder. This can be particularly problematic if you work out in the evening.
  • Increased Heart Rate and Blood Pressure: Caffeine can cause a temporary increase in heart rate and blood pressure, which could be dangerous for individuals with heart conditions.
  • Dependency and Withdrawal: Regular use of high doses of caffeine can lead to dependency. If you suddenly stop taking caffeine, you may experience withdrawal symptoms like headaches, fatigue, and irritability.

Safety Concerns

The safety of high-dose caffeine pre-workouts is a topic of ongoing research.

A study by the International Society of Sports Nutrition suggests that while caffeine can enhance exercise performance, its safety and potential side effects should be considered.

Another study found that while pre-workout supplements containing caffeine and other ingredients can improve strength and cognitive function, they didn't significantly affect body composition or blood chemistry.

However, the study also noted that more research is needed to determine the long-term safety of these supplements.

While 600mg caffeine pre-workouts can offer performance benefits, they also have potential downsides and risks.

It's important to consider these factors and consult with a healthcare professional before starting any new supplement.

Remember, everyone's tolerance to caffeine is different, and what works for one person may not work for another. Always start with a lower dose to assess your tolerance and listen to your body.

Assessing Tolerance to Pre-Workouts

Before diving into pre-workout supplements, especially those with high caffeine content, it's crucial to understand your body's tolerance to these products.

Here's a step-by-step guide on how to assess your tolerance to pre-workouts:

Step 1: Start with a Low Dose

If you're new to pre-workouts or haven't used them, starting with a low dose is best.

This can help you gauge your body's initial reaction without overwhelming your system.

Step 2: Gradually Increase the Dose

Once you're comfortable with a low dose, you can gradually increase it over time.

This allows your body to adapt to the supplement and helps prevent unwanted side effects.

Step 3: Monitor Your Body's Reaction

Pay close attention to how your body reacts to each dose increase.

If you notice any adverse effects, such as jitteriness, rapid heartbeat, or trouble sleeping, it may be a sign that the dose is too high.

Step 4: Adjust as Needed

If you experience side effects, don't hesitate to reduce the dose or take a break from the supplement.

Remember, the goal is to enhance your workout, not to push your body to its limits.

Cycling Pre-Workouts

Cycling pre-workouts can help prevent your body from becoming too accustomed to the supplement, leading to decreased effectiveness over time.

Here's a simple guide on how to cycle pre-workouts:

Step 1: Use the Pre-Workout for a Set Period

Use your pre-workout supplement consistently for a set period, typically 6-8 weeks. This allows your body to reap the benefits of the supplement.

Step 2: Take a Break

After the set period, take a break from the supplement for 1-2 weeks. This allows your body to reset and prevents it from becoming too accustomed to the supplement.

Step 3: Switch to a Lower Caffeine Pre-Workout

If you're using a high-caffeine pre-workout, consider switching to a lower-caffeine pre-workout during your off-cycle.

This can help maintain some of the supplement's benefits without overstimulating your system. Check out our category page for caffeine dosages, starting from 100mg.

Step 4: Repeat the Cycle

After your break, you can return to your regular pre-workout or try a new one. Repeat the cycle as needed.

Everyone's body is different, so what works for one person may not work for another.

Always listen to your body and adjust your pre-workout routine as needed.

You might like our favorite, high stim but clean pre-workout Bulk Black.


  1. What are the benefits of 600mg caffeine pre-workouts? High-dose caffeine pre-workouts can significantly boost energy, focus, and endurance. They can help you push through tough workouts, increase your workout intensity, and potentially enhance your performance and results.
  2. Are 600mg caffeine pre-workouts safe? While caffeine is generally safe for most people, a 600mg dose is quite high and may not suit everyone. It's important to assess your tolerance to caffeine before trying such a high dose. Side effects can include jitters, insomnia, increased heart rate, and digestive issues. Always consult with a healthcare professional before starting any new supplement regimen.
  3. Who should use 600mg caffeine pre-workouts? These pre-workouts are typically geared towards serious athletes or fitness enthusiasts who have a high tolerance to caffeine and are looking for a significant energy boost for intense workouts.
  4. Who should avoid 600mg caffeine pre-workouts? Individuals sensitive to caffeine, pregnant or nursing women, those with certain medical conditions (like heart disease or high blood pressure), and those taking certain medications should avoid high-dose caffeine pre-workouts. Always consult with a healthcare professional if you're unsure.
  5. What are the potential side effects of 600mg caffeine pre-workouts? Potential side effects can include jitters, insomnia, increased heart rate, digestive issues, and in extreme cases, caffeine toxicity. It's important to listen to your body and reduce the dose or discontinue use if you experience any adverse effects.
  6. How do 600mg caffeine pre-workouts compare to traditional pre-workouts? 600mg pre-workouts contain significantly more caffeine than traditional pre-workouts, typically around 150-300mg of caffeine. This means they can provide a much stronger energy boost, but also come with a higher risk of side effects.
  7. What are some popular 600mg caffeine pre-workouts on the market? Some popular 600mg caffeine pre-workouts include Assassin v7 by Apollon Nutrition and Hooligan by Apollon Nutrition. These products are known for their high caffeine content and potent energy-boosting effects.
  8. How should I take a 600mg caffeine pre-workout? It's recommended to start with a lower dose to assess your tolerance. Take the pre-workout 20-30 minutes before your workout. Avoid taking it too close to bedtime as it could interfere with your sleep.
  9. Can I build a tolerance to 600mg caffeine pre-workouts? Yes, regular caffeine use can lead to tolerance, meaning you might need higher doses to achieve the same effects. It's a good idea to cycle your pre-workout or take regular caffeine breaks to prevent this.
  10. Can I combine a 600mg caffeine pre-workout with other supplements? It depends on the supplement. Combining a high-dose caffeine pre-workout with other stimulants is not recommended due to the risk of overstimulation and potential side effects. However, combining it with non-stimulant supplements like BCAAs or creatine could enhance your workout results. Always check with a healthcare professional before combining supplements.

Bottom Line

600mg caffeine pre-workouts can be a powerful tool for those looking to maximize their workout performance.

They're not for everyone, but for those who can handle the high caffeine content, the benefits can be game-changing.

Using these products responsibly and listening to your body's response is essential.

by Nader Qudimat

Forged by iron and cold steel, I'm Nader, a mid-30s natural bodybuilder. Once a 100lb skinny guy, I've transformed into a 200lb muscular athlete with over 15 years of lifting experience. Today, I leverage my transformation and extensive experience to guide countless individuals on their fitness journeys.

Click here to check out my 12 year transformation: Natural 12 Year Transformation

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