Best Thermogenic Supplements Ranked for 2018 (Top 10 Brands)

This is our official list of the best thermogenics on the market. These 10 brands have the best feedback from users and the highest reviews online.

#1 Thermogenic

Instant Knockout

Instant Knockout

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As you may already know, eating well and exercising regularly are key aspects of overall health and should be your top priorities. Diet is the #1 factor of overall health, followed by exercise. However, for some folks, even proper diet and exercise aren’t enough to achieve the results you’re looking for.

What is a Thermogenic?

If you’d like to lose weight, there are many things you can do to help yourself out. Drink more water, eat smaller portions, avoid fatty foods, get plenty of cardio exercise, etc. And then there’s another big factor that many people often overlook: supplementation.

Whether you’re looking to lose a few pounds of stubborn fat or looking to completely transform your body, using a top thermogenic supplement may help you in your journey.

In essence, thermogenics are a category of health supplements designed to increase the metabolism. The term thermogenic refers to the natural process of thermogenesis, which is the process of expending energy (calories) to produce heat and maintain bodily functions. Thermogenesis is a normal process in every living mammal. A standard rate of thermogenesis will burn an average amount of calories, both during exercise (active) and rest (inactive) periods.

Generally, these supplements are made up of a variety of herbal supplements and other natural ingredients. They will often contain stimulants, such as caffeine, which help to increase the metabolism and provide more energy. The best thermogenic products will provide a balanced blend of natural ingredients that will work together to help you burn more fat.

How do Thermogenics Work?

Essentially, thermogenic supplements aim to increase the rate of thermogenesis in the body, which increases energy expenditure both during exercise and rest. More energy expended = more calories burned – which sometimes translates to more weight lost!

So, basically, these supplements are designed to help you burn more calories, regardless of the activity you’re doing, by increasing your metabolic rate. Obviously, you will always burn more calories when you’re active.

Common Ingredients in Thermogenic Products

Thermogenic supplements and other top weight loss pills use blends of different fat burning ingredients to achieve the desired results. Let’s take a look at some of the common ingredients used in these products, and how they affect the body.

  • Stimulants – Stimulants are found in most of the best diet pills that work well, and are widely considered to be some of the most important ingredients found in these supplements. Caffeine anhydrous, guarana extract, green tea extract and green coffee extract are the most common stimulants used. Caffeine helps to increase the metabolism. Plus, it of course provides you with more energy to get out and exercise more!
  • Thermogenic extracts & herbs – Many herbal extracts and natural compounds are used in these supplements for their positive effects on thermogenesis. These thermogenic ingredients, are ones such as raspberry ketones, coleus forskohlii, etc. Capsaicin (an acid found in spicy peppers) is also often added for its ability to increase thermogenesis and help maintain a healthy weight.
  • Appetite suppressants – Oftentimes appetite suppressants are added to these products to help you keep your diet in check. Ingredients like glucomannan are added because they help you feel more full.
  • Energizing ingredients – Most blends contain caffeine, which we talked about in the stimulants section. Most products also include other energizing ingredients, such as panax ginseng, B-vitamins, and more.

Benefits of Thermogenics

Thermogenics are designed to help with weight loss efforts by increasing the rate of thermogenesis and increasing caloric burn. Each product uses a different formula, but the overall goal of these supplements is the same. Some potential benefits and uses include:


Thermogenesis is a natural metabolic process in which your body burns calories to produce heat. It’s an important part of the human metabolism and has an impact on your resting metabolic rate, or the rate at which you burn calories while being inactive. Thermogenesis is a routine process in the body, but some supplements aim to increase the rate of thermogenesis in order to burn more calories.

Several included ingredients may help. Cayenne pepper and capsaicin, common ingredients in thermogenics, can induce thermogenesis and promote fat oxidation. Forskolin may also affect thermogenesis by activating cyclic AMP. And stimulants, a common staple of thermogenics, help to increase thermogenesis in many people. It’s important to note that many of these ingredients have a very mild effect on theromenesis and are unlikely to have a major effect on caloric burn rates. Still, in aggregate, they may be beneficial.


Thermogenic supplements are designed to support a healthy metabolism. Some claim to increase the metabolic rate, thereby burning more calories. This is possible, but many claims are overblown. With that said, there is some evidence to support certain ingredients used in thermogenics.

Caffeine can help to boost the metabolism and help you burn more fat. One study found that caffeine increased the energy expenditure rate (metabolism) by up to 16% over a 1-2 hour period. It appears that caffeine from all sources has a similar effect, so there is little difference between taking a supplement containing caffeine and simply drinking a cup of coffee.

Green tea extract can also help. In addition to the benefits derived from caffeine, green tea extract contains the polyphenol epigallocatechin gallate (EGCG), which is beneficial for cardiovascular and metabolic health and may also help you burn more fat. One review of 6 independent research studies found that a combination of green tea and caffeine helped participants burn 16% more fat than the placebo group.

Weight Management

Thermogenics are designed to help with weight loss. The best thermogenic supplements will target various aspects of the process – including metabolism, thermogenesis and appetite control. Some claims are overblown, but there is some evidence to support certain ingredients.

In addition to the various benefits discussed above (coming mostly from caffeine, green tea, and capsaicin), other ingredients have some potential for weight loss. Garcinia cambogia may help to cause modest weight loss, primarily by helping to suppress the appetite and reducing the accumulation of body fat in obese individuals. Yohimbe, another common ingredient, may help to promote the breakdown of fat to be used as fuel. Other ingredients may be beneficial as well, but more research is needed.

It’s important to note that many potential benefits of thermogenics are not definitively proven by clinical science. There is also a lot of misinformation and hype marketing involved in the industry. Lastly, no thermogenic will offer much benefit if you’re not also eating well and exercising regularly. In combination with a healthy diet and exercise plan, thermogenics might help you shed a bit more weight – but they are far from a magic weight loss solution.

Who Can Benefit from Thermogenics?

Anyone who would like to lose weight can benefit from adding a good thermogenic supplement to their diet. Fat burners that work well will help you burn more calories, drop more unwanted fat, and have more energy for your day. What’s not to love?

Here are the people who can benefit the most:

  • Men of all ages – Any man over 18 years of age who wants to drop a few pounds, or even lose a significant amount of weight, can benefit from good fat burners. Men tend to carry excess fat in their stomachs, leading to the dreaded “beer belly”. Whether you want to get rid of your beer belly of drop 100+ pounds, a thermogenic can help. The best fat burner supplement for men can be found at the bottom of this page.
  • Women of all ages – Women, too, can greatly benefit from thermogenics. Women naturally carry more body fat than men, often in their hips, butt, and stomach areas. Any women over 18 who wants to shed some weight can do so much quicker with the help of a good supplement. You’ll find a list of the best thermogenics for women at the bottom of this guide.
  • Athletes and weightlifters -Athletes, weightlifters, and fitness enthusiasts of all types can find benefit from taking thermogenics. Anyone who likes to stay in shape would likely appreciate the increased metabolism that comes hand in hand with these supplements. And especially for bodybuilders, who often have to consume large quantities of food in order to pack on muscle, thermogenics can be essential to help avoid gaining fat. These supplements are also highly useful during bulk and cut cycles.
  • Aging men and women – When we reach a certain age, our metabolisms begin to slow down. This is a completely natural process, and it’s unavoidable for most people. If you’ve noticed that your metabolism isn’t what it used to be, you may have to alter your diet in order to maintain your weight and stay in shape. Using a thermogenic can help keep you lean and defined by naturally increasing your metabolism.

Are There Any Side Effects?

Before you begin taking any sort of supplement, you should be aware of any potential side effects. The vast majority of supplements can have at least some sort of side effect – although it really depends on the individual person and product. Every product contains different ingredients, and every person reacts differently to those ingredients. With that being said, these are some of the most common side effects of thermogenic supplements:

  • Difficulty sleeping

Most of the top fat burners use stimulants in their formulas, as stimulants help to increase the metabolism. However, if taken later in the day, these stimulants (such as caffeine) can make it difficult to get to sleep at night. To avoid this, simply do not take these supplements later than mid-afternoon. Just think about it like coffee – you wouldn’t drink a cup of coffee after dinner, so you shouldn’t take a supplement that includes caffeine after dinner, either.

  • Dehydration

Dehydration can occur in people taking thermogenics for a few reasons. First of all, these supplements contain stimulants, which can cause dehydration. Secondly, these products aim to increase thermogenesis, which heats up the body and burns more calories – but can also lead to dehydration. Make sure you drink enough water and fluids while on these supplements.

In some cases, other side effects may occur. Again, it really depends on how your body reacts to the ingredients used. Generally, side effects are mild or not noticeable at all. However, more severe side effects can occur if you take too much of a product. Always follow the written instructions on the product packaging, and never consume more than the recommended dose of ANY supplement.

Note: We do not recommend taking any supplements featured on this website without speaking with a doctor first!

How to Take a Thermogenic Supplement

In general, you’ll want to follow the instructions of the individual product you choose. Most of the best fat burner pills will instruct you to take the product in 2 or 3 doses throughout the day. Usually, you’ll want to start with one at breakfast, and another 1 or 2 around lunch time.

Remember that since many of the strongest thermogenics contain caffeine, you’ll want to avoid taking them later in the day to avoid restlessness at night. Also, keep in mind that most of the best fat burners are designed to be taken in cycles of 1-3 months, and not longer. Thermogenics are not meant to be taken on a daily basis for more than a month or two. If you continue to take them for too long, your body will become used to them and they will no longer be effective.

The bottom line is that you should always follow the instructions. Do not take more than the recommended dosage unless you ask your doctor first, and remember to use thermogenics for short-term periods only.

What to Look for in a Good Thermogenic Pill

In order to find the best thermogenic for you, you should be aware of the key factors to look for when making a choice. There are a lot of options out there, some good, some great, and some a complete waste of money! We encourage you to read fat burner reviews and be informed on the products you choose to use. Here are some things to look for when making your purchase:

  • Ingredients – obviously, you should first look closely at the ingredients label. What’s in the product? Does it contain proven, clinically studied ingredients to aid fat loss? How much of each ingredient does it contain? The best fat burner pills will include a variety of proven ingredients.
  • Brand reputation – who makes the product? Are they a trustworthy company? There are a lot of companies manufacturing these products, but the best fat burners come from, well, the best companies! Our list below contains ONLY products from quality companies – but if you choose to do your own research, be wary.
  • Value for money – how much does it cost? While you shouldn’t necessarily look for the cheapest option, you should always compare costs to see the price per serving/per day. Keep in mind that if you want the fastest fat burner, you’ll be paying a bit more than average.
  • Caffeine content – most of these supplements contain caffeine, but you should be aware of how much caffeine is in each serving. There’s about 80-160mg of caffeine in a cup of black coffee, which is useful for comparing products.
  • Convenience of use – the majority of top thermogenics will require you to take 2+ doses throughout the day. This is normal, and makes for more effective results. However, some products require 3 or 4+ doses each day, which can become a hassle.

Top 10 Thermogenic Fat Burners Compared

Heads up, there are affiliate links in this article, so if you buy something, we get a cut of the sale.

1. Instant Knockout


Instant Knockout is widely considered to be among the best thermogenics and weight loss supplements available. Originally formulated for mixed martial arts fighters, Instant Knockout contains a potent blend of all-natural ingredients that work together to help you with your goals.


  • Enjoy longer workouts – Increases your energy in the gym
  • 90 Day Guarantee – 3 Month Deal covered by guarantee
  • Worldwide Shipping*
  • Used in MMA

Package Deals:

  • 1 month supply – 1 Box
  • 2 month supply – 2 Boxes + FREE Delivery (USA & UK)
  • 3 month supply – 3 Boxes + 1 FREE Box + FREE Delivery (Worldwide*) + Free T-Shirt + 90 DAY GUARANTEE

What’s in it: One serving contains:

  • 500mg Green Tea Extract
  • 100mg Cayenne Pepper
  • 100mg Green Coffee Bean
  • 1800mg glucomannan 
  • 6 more natural ingredients, including B vitamins, zinc, caffeine anhydrous, chromium and piperine.

Who makes it: Instant Knockout is made by Roar Ambition, a UK based supplement company. With a focus on all-natural ingredients, Roar Ambition currently makes two highly effective, highly successful products; Instant Knockout, and TestoFuel. This small but rapidly growing company is on the cutting edge of fitness science, and based on the successes of their current products, we are thoroughly excited to see what they come up with next!

Bottom line: Overall, Instant Knockout is a thermogenic powerhouse. This simple, all-natural, highly potent formula gets to work fast.

Roar Ambition, the company behind the product, is so sure that you’re going to love Instant Knockout that they offer a 90-day money back guarantee!

Note: Instant Knockout is ONLY available via the official website. You won’t be able to find it in stores or elsewhere online.

Full Breakdown: Instant Knockout

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2. Kor Nutrition Thermakor


Thermakor is one of the best thermogenic products available. It tops our list of the best weight loss supplements for many reasons. This product contains an advanced formula that helps aid you in your weight loss efforts.


  • Unique liquid formulation for faster absorption
  • Great value for money
  • Helps you achieve your weight loss goals
  • 30-day money back guarantee

What’s in it: One serving contains:

  • 300mg green tea extract
  • 100mg garcinia cambogia,
  • 200mg razberi-K
  • 300mg green coffee bean extract
  • 150mg caffeine anhydrous
  • Much more, including hordenine, salicin, synephrine, and more. These ingredients all work together to provide all the many benefits of Thermakor.

Who makes it: Thermakor is made by Kor Nutrition, a new but quickly growing supplement manufacturer. Kor Nutrition is based in Michigan and employs a team of health professionals dedicated to creating innovative and effective supplements. Currently, Kor Nutrition only offers their Thermakor diet supplement – but based on the impressive results shown by Thermakor users, we’re excited to see what Kor Nutrition will bring to market next!

Bottom line: Overall, Thermakor is a very good thermogenic and our overall top recommendation for anyone looking for a thermogenic supplement. Plus, don’t forget about the 30-day money-back guarantee!

Full Breakdown: Kor Nutrition Thermakor

Use coupon code top10supps at checkout for 10% OFF

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3. Cellucor Super HD


Super HD is one of the strongest thermogenics available and one of our top recommendations. This convenient, affordable and effective supplement gets to work right away.


  • Affordable
  • Very convenient with only 2 capsules per day
  • Made by Cellucor, one of the best supplement companies out there

What’s in it: One serving contains:

  • 250mg SuperHD ThermoSculpting blend, consisting of blue whiting, green tea extract, and dandelion root extract.
  • 250mg SuperHD Sensory Impact blend, consisting of tyrosine, yohimbe, cayenne, rhodiola root extract, and more.

Who makes it: Super HD is made by Cellucor. Based in Texas, Cellucor was founded in 2002 and has quickly grown into one of the largest and best companies in the industry. Today, they offer an impressive selection of health supplements, ranging from fat burners to protein powders and beyond. While best known for their C4 product line, Cellucor offers it all. With several prestigious awards under their belt, and a huge group of loyal customers and fans, it’s no secret that Cellucor is one of the best in the business!

Bottom line: Overall, Super HD is one of the top fat burners on the market. Plus, it’s very convenient as it only requires 2 capsules a day, compared to 3-6+ with competing products. And last but not least, the fact that Super HD is made by Cellucor, one of the best companies in the industry, makes this an easy choice for our top 3 recommendations.

Full Breakdown: Cellucor Super HD

4. BSN Hyper Shred


Hyper Shred is a new thermogenic supplement made by BSN Nutrition. Formulated by BSN’s team of health experts, Hyper Shred targets many aspects of weight loss. It can help you achieve your goals. And with a serving size of just one capsule, Hyper Shred is one of the most convenient thermogenics out there.


  • B vitamins and caffeine added
  • Very affordable
  • Super convenient – only requires 1 capsule each day

What’s in it: One serving contains:

  • 460mg proprietary blend, including black pepper fruit, red pepper fruit, bitter orange extract and caffeine anhydrous.
  • Nootropic stimulators, including riboflavin, niacin, bacopa and more.

Who makes it: Hyper Shred is made by BSN Nutrition, otherwise known as Bio-Engineered Supplements. BSN is a relatively small company, but they work hard to maintain a good reputation. BSN’s skilled development team is constantly at work creating innovative new products to meet the needs of the growing fitness industry.

Bottom line: Overall, Hyper Shred is a good fat burner for those seeking a convenient option. With only one pill a day, nothing beats the convenience factor of Hyper Shred – every other product on this list requires at least 2 servings each day.

Full Breakdown: BSN HyperShred

5. MusclePharm Shred Matrix


Shred Matrix is a powerful all-in-one weight loss system supplement made by MusclePharm. Using a unique and comprehensive blend of ingredients to help promote fat loss and increase energy.


  • Affordable


  • Lots of ingredients – higher potential for side effects
  • Uses a proprietary blend (does not disclose individual doses of ingredients)

What’s in it: One serving contains 2437.5mg weight loss proprietary blend, consisting of:

  • Energy & fat metabolism blend, consisting of guarana seed extract, caffeine anhydrous, green tea extract and much more.
  • Appetite balancing & weight management blend, consisting of glucomannan, guar gum, white kidney bean, and more.
  • Anti-stress mood balancing blend, including turmeric, panax ginseng and more.

Who makes it: Shred Matrix is made by MusclePharm. Otherwise known as MP, MusclePharm has been an industry giant for many years, producing some of the most popular supplements on the market. With a wide range of selections and partnerships with legendary athletes like Arnold Schwarzenegger, MP is an industry powerhouse that is here to stay.

Bottom line: Overall, Shred Matrix is a top thermogenic that also helps you with various other aspects of the weight loss process. The only downside is that the product uses a proprietary blend, so you can’t see exactly how much of each ingredient is included.

6. EVLution Nutrition Trans4orm


EVLution Nutrition Trans4orm is a multistage thermogenic complex for increased fat burning potential.


  • Multistage blend targets multiple aspects of fat burning
  • Includes B vitamins


  • A bit on the expensive side

What’s in it: One serving contains:

  • 500mg green tea leaf extract
  • 500mg tyrosine
  • 175mg caffeine anhydrous
  • 20mg synephrine
  • Much more, with many powerful compounds and extracts, there’s really too much to list here!

Who makes it: Trans4orm is made by EVLution Nutrition, a new and up-and-coming company that’s been making waves in the supplement industry. Founded in 2013, EVL has exploded in popularity, going on to win several industry awards and build a loyal following of customers and fans. With an impressive performance out of the gate, we’re excited to see what EVL comes up with in the coming years!

Bottom line: Overall, if you’re looking for some of the most effective diet pills out there, Trans4orm is an excellent choice. With a ton of potent ingredients, you can count on this product to target the most important aspects of fat burning, helping you with your weight loss goals. It is a bit on the expensive side, but it’s well worth it.

7. MuscleTech Hydroxycut Hardcore Elite


Hydroxycut Hardcore Elite is a powerful weight loss supplement from MuscleTech. This product uses a unique blend of ingredients to target the 3 most important pillars of fat burning: thermogenesis, metabolism, and energy. In one easy and convenient product, you’ll get tons of benefits and be well on your way to a new body!


  • Affordable
  • Convenient – small capsules


  • Does not include any ingredients to control hunger cravings

What’s in it: One serving contains:

  • 270mg caffeine anhydrous
  • 250mg coleus forskohlii
  • 200mg green coffee extract
  • 100mg L-theanine
  • 3mg yohimbe

Who makes it: This product is made by MuscleTech, one of the largest and most well-respected brands in the business. For years, MuscleTech has worked hard to develop cutting-edge products and maintain their reputation for quality and consistency. With more than 20 years of industry experience and a loyal following of fans, MuscleTech is a company you can trust.

Bottom line: This product made our list of top rated fat burners because it’s effective, all natural, and because it comes from a trustworthy and well respected company.

Full Breakdown: MuscleTech Hydroxycut Hardcore Elite

8. Old School Labs Vintage Burn


Vintage Burn is a good fat burner made by Old School Labs. Combining 9 powerful fat-burning ingredients.


  • Contains 9 weight loss ingredients
  • Includes raspberry ketones, green tea extract and more
  • Third-party tested
  • Money-back guarantee
  • Zero artificial substances, additives or preservatives


  • Expensive

What’s in it: One serving contains:

  • 330mg green tea leaf extract
  • 270mg green coffee bean extract
  • 200mg raspberry ketones
  • 150mg caffeine
  • Other ingredients, including olive leaf extract, bacopa leaf extract, garcinia fruit extract, chrysin and forskohlii root extract.

Who makes it: Vintage Burn is made by Old School Labs, a California based manufacturer of fitness supplements. For more than 40 years, OSL has been focused on making “supplements that make sense”, using proven ingredients, clinically effective doses and innovative formulas. Old School Labs is a company that truly puts their customers first.

Bottom line: Overall, Vintage Burn is a great product from a great company. Using a potent blend of all-natural ingredients, with no preservatives, fillers or synthetic junk, Vintage Burn is a clean and simple product. It’s one of the best fat burners for men and women alike, but unfortunately it’s fairly expensive compared to our top recommendations.

9. ErgoGenix ErgoCut


ErgoCut is a metabolic amplifier and weight loss product made by ErgoGenix. Containing tyrosine, carnitine, cayenne pepper extract and much more.


  • Powerful blend of 14 ingredients
  • Affordable


  • Only available on – no price competition
  • A bit expensive for what it is

What’s in it: One serving contains:

  • 500mg N-acetyl tyrosine
  • 200mg caffeine anhydrous
  • Thermogenic ingredients, such as coleus forskohlii extract, cayenne pepper extract, guarana seed extract, and more.

Bottom line: Overall, ErgoCut is a good product. Combining many powerful ingredients, it targets multiple aspects of the fat loss process to produce real results. For what it is, though, it’s a bit on the expensive side.

Bottom line: Overall, ErgoCut is a good product. Combining many powerful ingredients, it targets multiple aspects of the fat loss process. For what it is, though, it’s a bit on the expensive side.

10. MHP Thyro-Slim


Thyro-Slim is a unique fat burning supplement made by MHP. Using two unique formulas, one designed for daytime use and the other for nighttime use (AM/PM), Thyro-Slim is an innovative product that aims to increase your fat burning potential 24 hours a day.


  • Unique dual product: AM and PM formulas
  • AM formula aims to increases energy
  • PM formula does not contain caffeine
  • Comes from a known company


  • 6 large pills per day
  • More expensive than average

What’s in it: One serving contains:

  • Thyrogenic (AM formula) contains thermogenic ingredients such as raspberry ketones, green tea extract, guarana seed extract and more.
  • Thyrodrene (PM formula) contains a soothing herbal blend, cleansing blend, restoration blend and thyrogenic blend, consisting of many herbal ingredients such as acai extract, uva ursi leaf, chamomile flower extract, and much more.

Who makes it: Thyro-Slim is made by MHP, otherwise known as Maximum Human Performance. Founded by pro bodybuilder Gerard Dente, MHP has used innovative formulas and unique approaches to formulate effective fitness supplements for many years now.

Bottom line: Overall, Thyro-Slim is an innovative weight-loss pill. With a blend of tons of different herbal and natural ingredients, there’s a lot packed into this one product. While effective, it is a bit on the expensive side, and it can be inconvenient to take 6 large pills per day.

Full Breakdown: MHP Thyro-Slim

Final Thoughts

Now that you’ve seen our list of all the top thermogenic supplements on the market, it’s time to make a purchase! We’re confident in every single one of these products – all you have to do is choose the one that fits your needs and budget the best!

Lastly, we’d like to remind you that the supplement industry is constantly changing. In order to stay current, we recommend that you bookmark this page in your web browser and check back often.

Thanks for reading, and good luck in your weight loss journey!

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Austin Meadows

Written by Austin Meadows

Austin Meadows is an independent writer and consultant specializing in health and wellness topics. With more than 7 years of experience writing in the natural health industry, Austin strives to deliver accurate, concise and researched based information to his readers. You can find more of Austin's work at, or connect with him on LinkedIn.