5 Best Thermogenic Pre Workout Supplements For Fat Loss 2023

Reviewed by Dr. Drew Sutton, MD

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best thermogenic pre workout

While some men and women naturally have the “ideal” physique, others must put more effort into attaining such a shape. Some men dream of having an adonis-like body, while women dream of achieving that hourglass figure. These are people’s most common body goals; however, attaining this is not a walk in the park. Weight loss is among the most frustrating processes an individual could ever go through. This is especially more overwhelming if one already practices a healthy lifestyle, such as regular exercise, a healthy diet, enough sleep, and proper hydration. Committing to all these tips religiously while seeing little to no changes can be very discouraging.

On the other hand, there are millions of self-proclaimed fitness gurus, all claiming to know the “right” way to achieve your ideal body goals. It can be overwhelming to watch them showcase their shredded abs while listing the numerous do’s and don’ts in the fitness journey. Nearly all of them contradict each other; you can never be too sure who’s right or wrong. Well, one thing is for sure, losing weight effectively is determined by our body composition, including metabolism, genes, age, gender, etc. adding a thermogenic pre-workout to your weight loss journey is an excellent option, very rejuvenating. 

 Metabolic Supplements

Since the market is flooded with numerous metabolic supplements, choosing the one that suits your needs and preferences is crucial. Getting the best thermogenic pre-workout supplement gives you that extra energy to burn stubborn fat, get lean muscle mass, increase blood flow, regulate blood sugar levels, lose weight, and boost your mood. Weight loss supplements with all-natural ingredients are an excellent option; therefore, always avoid artificial additives, flavorings, and fillers. This article offers a comprehensive list of some of the best thermogenic pre-workout supplements designed to boost thermogenesis naturally. These fat burners contain all-natural ingredients known to increase thermogenesis. They also undergo third-party testing to ensure efficacy, quality, safety, and purity. Also, the article discusses thermogenesis and how these supplements burn stubborn body fat, promote weight loss, promote protein synthesis, suppress hunger, boost muscle endurance, and many more. Let us discuss the top-five best thermogenic pre-workout supplements:

5 Best Thermogenic Pre-Workout Supplements For Weight Loss 2023

This article lists and comprehensively describes the five best thermogenic pre-workouts, including their pros, cons, benefits, etc.

5 Best Thermogenic Pre Workout Supplements For Weight Loss 2023

Transparent Labs Lean

This thermogenic pre-workout supplement contains high-potency ingredients that promote fat and weight loss. It is free from any artificial colors, flavors, or fillers.

  • Tasty flavors
  • Increases energy levels
  • Contains BCAAs
  • No artificial sweeteners
  • Kicks in immediately
  • Relatively expensive
  • Not suitable for people with high-caffeine sensitivity

This is among the best pre-workout supplements to burn calories during and after exercise. This thermogenic pre-workout supplement contains high caffeine doses, boosting mental focus, increasing thermogenesis[1], and promoting fat oxidation. It contains all-natural ingredients and branched amino acids (BCAAs) that promote cognitive function[2], boost athletic performance and weight loss, and increase metabolism and muscle mass. It is ranked among the best pre-workout supplements due to its pleasant taste and almost-immediate effects. IOt kicks in after fifteen minutes. Also, it contains citrulline[3], guggulsterone[4], hordenine[5], and synephrine[6], which significantly boosts fat loss.

GAT Sport NITRAFLEX Burn, Pre-Workout Thermogenic Powder

This fat-burning pre-workout is among the best and most affordable dietary supplements. It has fat-burning effects and aids in muscle growth.

  • No artificial flavors
  • Affordably priced
  • No added sugars
  • Promotes muscles mass
  • Boost cognitive health
  • Has a spicy after-taste feeling

This thermogenic fat-burning pre-workout is an excellent option if you are looking to lose weight and maintain muscle mass. It contains special Rauwolfia Vomitoria Root Extract ratios[7], L-tyrosine, L-theanine, and other components. This pre-workout supplement boosts the physical and mental focus required for intense workouts. It also contains a patented ingredient, CaloriBurn, which has been proven to stimulate brown adipose tissue and enhance exercise performance. CaloriBURN is obtained from grains of paradise[8] extract. Also, this pre-workout boosts growth and muscles and increases energy levels and blood flow since it contains Nitrosigine[9]. It has a spicy feeling in her throat afterward, primarily due to the presence of CaloriBURN. This is, however, harmless.

Pre Lab Pro

This thermogenic pre-workout is vegan-friendly and comes in a natural berry flavor. It contains all-natural ingredients including vitamins and minerals, amino acids, caffeine, and many more.

  • Vegan friendly
  • Reduces fatigue
  • Packed with amino acids
  • No artificial flavors or colors
  • Not suitable for people with caffeine sensitivity
  • Contains beetroot, therefore not suitable for people with low blood pressure

This thermogenic pre-workout powder comes in a tasty natural flavor. It is packed with numerous vitamins and minerals such as vitamins B6, B12, D, potassium, iron, and many more. Vitamins B6 and B12 alleviate fatigue and boost energy production. Vitamin D promotes proper muscle function. Minerals such as iron and potassium boost muscle function, prose the nervous system and reduce fatigue. It contains an ample dose of caffeine that rejuvenates energy levels for working out. This is among the best thermogenic pre-workouts, packed with amino acids such as L-tyrosine, l-citrulline,l-glutathione, and l-theanine. If you have low blood pressure, then be aware that it contains 1500 mg of Red Beetroot powder. Beetroot[10] is known for lowering blood pressure. Also, it does not contain artificial sugars; it is naturally sweetened with stevia, monk fruit extract, and dextrose.

 Nitrosurge Shred Pre-Workout

NitroSurge Shred essentially mixes substances that produce thermogenesis with compounds that operate as an energy boost to the system to improve athletic performance. It is classified as a thermogenic pre-workout supplement.

  • Boosts fat burning
  • Boosts energy
  • Increases metabolism rate
  • Promotes cognitive health
  • Might cause a blood pressure imbalance
  • Might interfere with cancer treatment

Jacked Factory’s NitroSurge Shred pre-workout supplement lacks the thermogenic component that amplifies energy expenditure.NitroSurge Shred has l-citrulline, beta-alanine, acetyl l-carnitine, caffeine anhydrous, l-theanine, theobromine, and Bioperine among its components. You should gauge your tolerance to the supplement before consuming the recommended dosage of NITROSURGE SHRED. Test the product’s safety by combining one scoop of powder with 8–10 ounces of water 25–35 minutes before your workout. It is sweetened with sucralose despite not containing sugar or carbohydrates (Splenda). Sucralose has been proven to impact those who do not routinely consume it, yet it does not impact blood sugar or insulin levels in those who do.

RSP AminoLean

This powerful pre-workout supplement designed in 2008 contains three high-potency formulas to improve workout performance.

  • Contains three formulas
  • Has a mild caffeine dose
  • Third-party tested
  • Contains BCAAs and EAAs
  • Contains artificial colors and flavors
  • Stomach pain reports

Unlike many other pre-workout supplements, this product has three blends to help you lose weight, boost focus and energy levels, and promote muscle endurance. Among the best pre-workouts, Amino Lean contains thermogenic ingredients to help you lose weight, boost focus, and increase energy levels. It contains vitamin C, which is beneficial for boosting immune health. The following are three blends contained in this thermogenic pre-workout:

  • The amino acid mixture also contains beta-alanine, L-citrulline, and taurine[11]. Additionally, you’ll get BCAAs, essential amino acids[12], and Blockchain amino acids [24]. (EAAs).BCAAs are amino acids that your muscles “burn” for energy. The amino acids that make up branched-chain amino acids are leucine, valine, and isoleucine.
  • Weight Loss blend Conjugated linoleic acid (CLA), standard to 95% Epigallocatechin gallate (EGCG), and L-carnitine are all present. Standard to 50% chlorogenic acids[13] in green coffee[14]. These components have anti-inflammatory, anti-cancer, and anti-obesity properties.
  • Energy and focus blend. The encapsulated caffeine and theobromine from InnovaTea are natural substances.

What Is Thermogenesis?

The most fundamental rule of weight loss is to burn more calories through exercise and diet than you take in. By burning calories, your body creates heat via a thermogenesis[15] metabolic process. The substances used in this procedure typically increase the body’s core temperature to encourage the burning of more calories. No more fat can be converted to stored body fat since you burn the fat you consume. Some ingredients may help the body burn calories through thermogenesis and speed up the metabolism. The most popular ones include Cayenne pepper[16], Garcinia cambogia[17], bitter orange, Yohimbe[18], green tea, green coffee bean extract, l-carnitine, and caffeine.

How Do Thermogenic Pre-Workouts Work?

Thermogenic fat burners function by accelerating two related processes. They first quicken metabolism. Second, they enable you to exercise more vigorously so that you may also burn fat and calories.

These supplements aim to increase your body’s resting thermogenic state. This implies that calories are burned even during the metabolic process of eating. Our resting metabolic rate is something we all have. This is the fundamental metabolism required to maintain fundamental living processes. Thermogenic fat burners raise the metabolic rate at rest. You have a significant advantage over burning fat when you combine the dynamic rate of metabolism from exercise with an elevated resting metabolic rate.

You should be aware that thermogenic fat burners give you an advantage. They are not a perfect replacement for exercise. The true effect of thermogenic fat burners is obtained when exercise’s significant metabolic work is combined with an elevated resting metabolism.

Some thermogenic fat burners also make the promise to reduce hunger. Others prevent the body from storing calories and fat. For instance, caffeine slows down the process of lipogenesis or the production of fat. Green tea has a molecule that decreases the body’s capacity to absorb glucose, which can turn into fat, and it also has appetite-suppressing properties.

Difference Between Thermogenic and Other Pre-Workout

Features Of Thermogenic Pre-Workouts Supplements

  • Designed to boost metabolism rate
  • Designed to burn fat cells, not build muscle mass
  • Have a lower caffeine dose
  • Contain non-stimulant ingredients

Features Of Pre-Workout Supplements

  • Designed to increase energy for working out
  • Boosts focus when working out
  • Mostly contain BCAAs
  • Contain ingredients such as Nitric Oxide that promote nutrient absorption and protein synthesis

Benefits Of Thermogenic Pre-Workouts

  • Boosts fat oxidation
  • Promote immune health
  • Increases metabolism rate
  • Suppresses appetite
  • Boost athletic performance
  • Promote focus levels
  • Promotes weight loss

Potential Side Effects

Here are some typical adverse reactions linked to several pre-workout supplement components.

Large doses of caffeine can make you jittery, nauseous, have heart palpitations, be agitated, anxious, disoriented, irritable, and dehydrated. This is because it can make systolic blood pressure[19] higher.

Another well-liked pre-workout supplement that may cause stomach discomfort[20] is creatine. This is more likely if you consume more than the recommended daily intake of 3-5 grams.

Artificial sweeteners, sugar alcohols, and gums may cause digestive problems[21] in certain people.

How To Choose The Best Thermogenic Pre-Workout?

The following are various factors to consider when choosing a thermogenic pre-workout:

  • Production standards
  • List of ingredients. If you take any prescribed medication, ensure that no ingredient might react with your drugs. This is crucial since some products might have adverse effects; suppose you have any allergic reactions.
  • Target effect. Ensure you buy a supplement that suits your desired fitness goal. People purchase pre-workouts for different reasons, including losing weight, building muscle mass, and burning fat.
  • Third-party testing. Always check if the product has certified third-party lab testing proof and results. This guarantees the purity, safety, and efficacy of the supplement.
  • Brand’s reputation
  • Customer reviews

Final Thoughts

These thermogenic pre-workout supplements are excellent for boosting exercise performance and helping you attain your fitness objective. On the other hand, they are not magic pills; therefore, they adapt to a healthy lifestyle that entails regular exercise, proper hydration, balanced nutrition, and enough sleep.

Frequently Asked Questions (FAQs)

Will I lose muscle when losing weight?

Muscle mass reduction can be prevented by implementing the appropriate exercise, scheduling recovery time, proper nutrition, using the right dietary supplement, and much more.

Who should avoid a thermogenic pre-workout?

People with underlying medical conditions, nursing and pregnant women, minors, and people taking any prescribed medication.

What are the health benefits of these supplements?

They are designed to improve exercise performance, boost energy levels, burn fat, reduce weight, and suppress appetite, to mention a few.

Are they legal?

These supplements are legal.

What ingredients do metabolic enhancers contain?

Some of the most common ingredients include caffeine, conjugated linoleic acid (CLA), green tea, amino acids, and many more.

Do I have to work out when using a thermogenic pre-workout supplement?

Since they are not magic pills, adopt a healthy lifestyle with regular exercise, proper hydration, balanced nutrition, and enough sleep.

Are there any side effects?

Some might cause serious side effects, such as nausea, vomiting, headaches, and gastrointestinal problems.

+ 21 sources

MIDSS adheres to strict procurement guidelines and relies on peer-reviewed studies, academic research institutes, and medical associations. We work mainly with peer-reviewed studies to ensure the accuracy of the information. We avoid the use of tertiary references. You can read about how we ensure the accuracy and timeliness of our content in our editorial process.

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Madison Clarke, MBAHM
MBA in Healthcare Management
She is a professional blog post, article, researcher, and health writer. She has mastered the art of content writing by practicing for years and constantly learning. She is always ready and well equipped to write. It is always a pleasure to bring her skills to use and play her part in helping others achieve their objectives. She has 6 years of experience conducting research in Fitness and health care. She is MBA qualified and has written health content for 8+ years.


Drew is a retired ENT doctor who now lives in the Southeastern US. He was a member of the American Academy of Otolaryngology and a Fellow of the American College of Surgeons. He has a bachelor’s degree in Biology and Psychology and an MD degree. He completed his internship in General Surgery and Residency in Otolaryngology-Head and Neck Surgery and practiced for almost 30 years in all aspects of ENT, including a specialization in disorders of the ear and skull base. Drew is passionate about communicating his clinical experiences and making his knowledge more accessible to the general public by medical writing.

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