Best Thermogenic Pre-Workouts

Combining the fat-burning qualities of thermogenics with existing pre-workout powders that boost your exercise performance exponentially, in the last few years there has been a rise in manufacturers producing hybrids that do both.

Whether in the form of a powder or an energy drink, they’re intended to aid weight loss and bulk up your workout abilities, but what exactly are you consuming? What specific benefits will you see? Which product is right for you?

Don’t worry, we’ll help you answer those questions.

First off, we’ve highlighted five of our favorite supplements on the market right now, with solid feedback and high ratings from customers, so you can make a choice you know will... work out.

To get to grips with exactly what a thermogenic is and why you’ll benefit from introducing a pre-workout that features it to your routine, consult our clear and comprehensive Buyer’s Guide, which explains all you need to know.

And finally, should you have any further questions or concerns, you might resolve them with our set of answers to common FAQs that other customers have asked, right at the end.

Here’s to more energetic exercise than ever before!


C4 Ripped Sport Pre Workout Powder Arctic Snow Cone - NSF Certified for Sport + Sugar Free Preworkout Energy Supplement for Men & Women - 135mg Caffeine + Weight Loss - 30 Servings

As America’s top selling pre-workout manufacturer (with over 2 billion servings sold!) we’re pleased to present this Ripped Sport powder from C4 as our number one product when it comes to a quality thermogenic experience.

Thanks to a formula boasting such fat-burning ingredients as CLA and DygloFit, your metabolism will be supported in order to allow for harder training and increased weight loss, as your body blasts through its fat stores.

Similarly, a premium, clinically studied ingredient known as CarnoSyn Beta-Alanine is included; it has been proven to promote the endurance of your muscles and fight through your body’s fatigue as you exercise.

C4 are very proud of their NSF Certification for Sport, an independent program recognized by not only the US Anti-Doping Agency (USADA) but Major League Baseball, the National Hockey league and even the Canadian Football League!

In two delicious flavors, Arctic Snow Cone and Fruit Punch, they make for a tasty, fruity drink once combined with water, and both contain 135mg of caffeine to ensure the maximum amount of explosive energy that you desire.


  • Certified safe to use for your peace of mind
  • Tasty flavors that you’ll actually enjoy
  • Only 5 calories and 0 sugar
  • Boosts strength, endurance and performance


  • Small tub sizes (8.7 / 9 ounces)


NITROSURGE Shred Pre Workout Supplement - Energy Booster, Instant Strength Gains, Sharp Focus, Powerful Pumps - Nitric Oxide Booster & PreWorkout Powder - 30Sv, Watermelon

Available in delicious flavors like Watermelon, Lemon Lime, Fruit Punch and Orange Pineapple, this pre-workout from Jacked Factory is a cutting edge drinks powder designed for men and women who want to slim down AND work out harder.

Not only will you improve your physique without having to sacrifice that all important and well-earned muscle mass, but also experience clean energy, enhanced nitric oxide and greater blood flow to really push your stamina to the limits.

Containing absolutely zero artificial fillers or food dyes, you’ll maximize pumps, endurance and strength, all whilst continuing to fuel your muscle growth, with a laser focus and a seemingly endless supply of energy that increases weight loss too.

With 280 grams in every tub, there are at least 30 servings per container, and customers report that the dissolving process is pretty much instantaneous, leaving no unpleasant grainy taste in your mouth.

As an intense, science-based pre-workout fat burner for any adult, you can use it to break through stubborn motivation plateaus and crush every single training session, with the peace of mind that it comes from a cGMP certified facility in the USA.


  • Increases focus, energy and fat burning
  • Transparent label with clear ingredients list
  • Zero fillers or dyes used
  • Based on scientific research


  • One scoop is serving suggestion but some suggest this is too strong


Reign Inferno Red Dragon, Thermogenic Fuel, Fitness and Performance Drink, 16 Ounce (Pack of 12)

Feel all the fury of a ferocious dragon during your workout thanks to this thermogenic energy drink from Reign, which comes as a delicious flavored drink as opposed to a powder you need to dissolve - great for on the go or spontaneous workouts!

With 300mg of natural caffeine, BCAAs, electrolytes, absolutely no sugar and four delectable flavors to choose from, Watermelon Warlord, Red Dragon, Jalapeno Strawberry or Tru Blue, you’ll ignite your senses AND your tastebuds.

The chosen thermogenic ingredients work to increase metabolic energy, produce heat and burn calories (when used in conjunction with a healthy diet and regular exercise), adding fuel to your body’s fire - unlike dragons, you won’t breathe it.

The convenient twelve pack is a great way to stock up and ensure you can get plenty of workouts in before you need to repurchase, as well as being very handy to keep in the fridge so you have an ice-cold energy boost whenever you want one.

As this is considered a ‘food’ in accordance with the FDA, it is held to far higher standards than other pre-workout powders and will therefore be much less likely to have any negative effects or cause you harm after regular consumption.


  • Handy pre-mixed drink for on the go consumption
  • Four flavors to choose from
  • Natural caffeine and fat-burning properties
  • FDA regulated for your safety


  • Bulkier than a tub of powder, with less servings per purchase


Evlution Nutrition ENGN Shred Pre Workout Powder, Energy, 30 Servings (Cherry Limeade)

With a brand new formula designed to power your intense workouts and simultaneously support your fat loss goals, this advanced pre-workout from Evlution Nutrition has been specially developed with 18 active ingredients to suit you.

Key ingredients include the classic Shred Matrix of CLA, L-Carnitine, Coleus Extract, Yohimbe Bark Extract and Capsimax, al of which offer strength and endurance, supported by beta alanine, betaine, green tea caffeine and a whole heap of vitamins.

Every substance used is of the highest quality, produced in a USA facility under strict GMP guidelines, to produce a premium formula that you can trust, in five delicious flavors: cherry limeade, fruit punch, grape, blue raspberry and pink lemonade.

Engineered as the most complete and fully dosed pre-workout on the market, whilst avoiding the crash that other formulas cause by using a clean formula, there’s zero sugars, zero carbohydrates and zero calories. 

By elevating the connection between your body and your mind, you’ll perform at your peak and build more muscle fibers when you train, resulting in better lifts every time and therefore a higher quality of muscle development in general.


  • Aids weight loss, mental focus and energy
  • Clean natural caffeine sources and a full B-vitamin complex
  • Connects your mind and muscles
  • Supports a healthy metabolism


  • Not suitable for those with pre-existing medical conditions or taking any medication


Burn-XT Thermogenic Fat Burner Powder - Weight Loss Supplement, Appetite Suppressant, Pre Workout Energy Booster - Acetyl L Carnitine, Green Tea Extract (EGCG), Capsimax - 30 Sv, Strawberry Lemonade

Promising a cutting edge thermogenic fat burn formula for men and women, each serving of Burn XT’s pre-workout powder is an effective dose of some truly powerful synergistic fat-burning ingredients as another solid offering from Jacked Factory. 

Not only will you conquer your day and crush your workout jitter-free, but you should also notice an enhanced focus, improved mood and suppressed food cravings that aid your attempts to slim down and build gains at the same time.

Preserve your existing lean muscle whilst burning the fat you don’t want, boost your metabolism and see results fat thanks to their innovative recipe, clearly stated in a totally translucent list of ingredients that you can trust.

Manufactured in the USA with zero fillers, dyes or artificial colors and additives, these supplements target the fat burning process via several of the body’s pathways to attack your excess weight from every angle. Plus, it’s keto friendly!

As with all products from Jacked Factory, every substance used is backed by real scientific evidence and has been produced in a cGMP certified facility, so you can consume these pre-workouts without worrying about hidden nasties.


  • Thermogenic and muscle building properties
  • Delicious strawberry lemonade flavor
  • Translucent ingredients list you can trust
  • Made in a cGMP compliant facility in the USA


  • None of their statements have been evaluated by the Food and Drug Administration

Best Thermogenic Pre-Workouts Buying Guide

Thermogenics - What Are They?

If you’ve ever heard anybody say that eating a meal is a good way to warm up, they were talking about thermogenesis, the process by which our bodies produce heat as a byproduct of digestion. Essentially, just by having a snack, your body gets hotter!

At the same time, thermogenesis is also conducive to weight loss and calorie burning, as well as helping curb your appetite. Specific foods are proven to increase the thermogenic process, most notably chili peppers and apple cider vinegar. 

While a pre-workout more generally is intended to encourage more focus, increase your strength, plus deliver energy, nutrients and proteins, thermogenic pre-workouts (TPW) specifically encourage temperature increase and boost your metabolism.

In the vast sea of ingredients on the label of your pre-workout tub, the ones that have a thermogenic effect will usually include at least one of either caffeine, cacao, capsicum/cayenne pepper, green tea extract, yerba mate or theobromine.

In order to maximize the results you get from a TPW, you’re going to want to take it around a half hour before you exercise, to ensure it has plenty of time to kick in before your workout begins and you feel all of the effects.

Likewise, the more intense your workout is, the longer you do it for and the more versatile the exercise you perform during it will also increase, trying to encompass some weight lifting into your routine rather than focusing solely on cardio.

Your body will eventually build up a tolerance to caffeine, so you should try to cycle your use of pre-workouts and take a couple of weeks off when you stop feeling that classic “buzz” after consuming.

Benefits Of Pre Workout

By consuming a pre-workout powder or drink before you’re exercising, you’ll prevent a decline or dip in your energy in the middle of working out, enabling you to reach your goals and maximize your potential thanks to the hit of caffeine.

Similarly, your muscles will be optimized to perform at their best and burn up all of the additional energy from the bonus nutrients before beginning to deplete your natural energy stores, helping you keep going for longer.

Caffeine also naturally enables the body to burn fat more rapidly in addition to promoting strength and alertness, but remember: you need to sleep at some point, so be sure to avoid pre-workouts within 6-8 hours of your head hitting the pillow.

You should find that your focus and desire to work harder and faster is increased, thanks to a combination of all of the ingredients, which should help with motivation by putting some extra pep in your step before you begin.

In order for protein synthesis - the process of our body’s cells producing proteins themselves - to take place, you actually need to eat some first! Synthesis levels must equal or exceed the level of protein breakdown in order to maintain muscle mass.

You’ll notice that a lot of pre-workouts contain creatine, an ingredient that works to saturate the body’s store of creatine which is limited by nature. Just three grams of creatine is proven to boost your peak performance in quick bursts of heavy exercise.

Additionally, the presence of BCAAs like Leucine increases the rate at which Muscle Protein Synthesis (MPS) occurs, enabling the mTOR pathway in our body to regulate and proliferate anabolic processes including the production of protein.

Frequently Asked Questions

Are there side effects with thermogenics?

Though many people will consume without any problems, as is the case with anything in life, there are of course some side effects associated with thermogenics and pre-workout formulas in general.

Any that contain or exceed 400mg of caffeine could lead to symptoms that are similar to drinking too much coffee: anxiety, palpitations, an increased heart rate, restlessness or dizziness, and the shakes.

There are also more potential side effects from pre-workouts, as we’ll detail below, but these aren’t strictly related to thermogenics, it’s just the additional caffeine found in such formulas that you should worry about generally.

Can pre-workouts be bad for you?

The biggest thing to keep in mind is that, unlike food, supplements do not undergo as rigorous a set of safety tests and aren’t held to the same regulations. Anything that contains a large dose of stimulants should be used cautiously.

Before beginning a new course, it is highly recommended that you first of all peruse the list of ingredients and ensure you understand everything you’ll be consuming, and always consult the advice of your family doctor or another healthcare provider.

As we’ve already covered, the huge amount of caffeine they contain can seriously impair your sleep if you work out later than you should, leading to nighttime insomnia and an ability to get the full eight hours that you need to function properly. 

Unfortunately, one particularly messy side effect some users can experience is diarrhoea, whether that’s your body rejecting a substance it doesn’t appreciate or the presence of too much sodium bicarbonate, magnesium or taurine for instance.

You can counteract this stinky secondhand happening by mixing your powder with more water than the label recommends, as oftentimes their suggested dilution is not enough to properly dissolve powder, so it sticks around and causes tummy trouble.

In almost the exact opposite of the above problem, if a pre-workout is a blend that helps with weight loss, as thermogenics do, then certain ingredients may result in dehydration by pulling and excreting water present in your body.

It’s really important that you regularly drink water throughout the day, even if you don’t feel like you’re thirsty. If you notice you’re peeing much more frequently following a workout, be sure to drink more and replenish your water supply.

Also in relation to dehydration are the symptoms of headaches, which are obviously very counterproductive to your exercise. Should you be experiencing them frequently, consider reducing the regularity or serving size of your dosages.

Are all pre-workouts thermogenic?

In a word, no! Whilst many pre-workouts that don’t advertise themselves as having thermogenic properties can offer them accidentally as a result of the ingredients they use, many will not include the substances needed for encouraging thermogenesis.

Recipes that feature any of the ingredients we listed in our guide to thermogenic pre-workouts above are likely to induce the process, but those that don’t will not, or at least not as effectively as other options out there.

If you’re looking for a pre-workout that definitively encourages your metabolism and raises body temperature, seek a product that declares its thermogenic nature on the packaging, or contains one of the foods that we mentioned earlier. 

Just because a solution claims to aid weight loss or fat burning, doesn’t mean that it contains thermogenic ingredients, either, so be careful!