Trying to get fit or maintain a healthy body weight? You've heard about thermogenic supplements and want to learn more about those products.

What are thermogenics, how do they promote weight loss, are they safe, etc?

Our team has been dedicated to helping people lose weight for years…we know it can be tough, especially with so many weight loss myths and quick-fix solutions on the market.

In this article, we'll try to give you all the answers so you can decide whether thermogenic supplements are the right choice.

Before we get started, we believe it's important to explain briefly the meaning of thermogenic.

Thermogenic refers to anything that causes your body to produce heat. The process of thermogenesis happens naturally and can be stimulated. The term comes from the Greek words “thermos” (heat) and “genesis” (creation).


What is a Thermogenic Supplement?

Thermogenic supplements are dietary aids designed to boost metabolism and help you burn more calories. Typically, they contain a mix of natural ingredients that aim to increase your body's heat production, which enables you to burn more calories.

Common components include caffeine, green tea extract, garcinia cambogia, and other extracts or herbal ingredients helping with fat loss.

You might find thermogenic supplements in various forms, such as pills, powders, or liquids. Since many aren't familiar with the term “thermogenics,” these products are often labeled as “weight loss supplements” or “fat burners.”

That's the case with our best-selling fat burner SKALD…a thermogenic containing all-natural ingredients.

Our experience shows that thermogenics are used not only by people looking to lose weight…but also by athletes aiming to improve their body composition and fitness enthusiasts seeking an extra edge in their workouts.

Now, let's see what thermogenic supplements do to your body.

How thermogenic supplements work in the human body

How Do Thermogenic Supplements Work?

The main role of thermogenic supplements isn't to make fat cells disappear. They make your body produce heat, which releases fatty acids into the bloodstream and transforms them into a source of energy. In simple words, your body burns calories for fuel.

We have another article explaining the fat burning process in detail.

What Are the Effects of Commonly Used Components?

Caffeine, for example, can temporarily speed up your metabolism, which helps you burn even more calories and decrease body fat mass. That's why you'll see it on the label of pretty much any thermogenic dietary supplement.

A study by the Harvard School of Public Health shows that drinking four cups of coffee daily for 24 weeks reduces body fat by an average of 4%.

Some thermogenic fat burners enable your body to use fat for energy even more efficiently. This process is called fat oxidation and is stimulated by catechins found in green tea supplements.

Catechins are also effective appetite suppressants, potentially leading you to consume fewer calories throughout the day.

Another ingredient known for turning off hunger signals and reducing fat cell production is the hydroxy citric acid (HCA) found in garcinia cambogia. We've been studying the weight loss and health benefits of garcinia cambogia and use it in some of the BELDT Labs products.

To wrap up this section, we'll say this:

Everyone's body is different. How well thermogenics work depends on what's in them and how you eat, exercise, and process energy. We've seen folks feel more energetic or less hungry right away, but we recommend not to expect overnight results. It usually takes 2 to 4 weeks before you see any changes.


Are Thermogenic Supplements Safe?

The safety of thermogenic supplements is a complex issue, and we want to be objective. While most ingredients in these products are generally safe, there are potential risks.

Too Much Caffeine

Many thermogenic fat burners contain high levels of caffeine. Increasing your daily caffeine intake (FDA recommends not more than 400mg) can cause high blood pressure and side effects like jitters, anxiety, and sleep disturbances.

Gastrointestinal Distress

Thermogenics with high levels of fiber can cause gastrointestinal issues, such as bloating, stomach pain, and changes in bowel habits. These side effects can be troublesome if you have a sensitive digestive system or stomach problems.

Interactions with Medications

Certain components in thermogenic dietary supplements can interact with prescription medications. That was one of the reasons all supplements containing Ephedra were banned back in 2004. We believe it's always better to consult a healthcare provider if you take any medications.

Quality and Regulations

The dietary supplement industry isn't as tightly regulated as pharmaceuticals. This has often resulted in mislabeling or undisclosed harmful ingredients. Our advice is to consider only supplements independently tested and manufactured in FDA-approved facilities with GMP certifications.


After being in the industry for a while, we know that even products marketed as all-natural can be harmful due to the high concentration of stimulants.

To ensure our products are safe but effective, at BELDT Labs, we keep the doses of each component moderate. A perfect example is our top-rated thermogenic fat burner, which has been the reason for many transformation stories.

skald thermogenic fat burner

Thermogenics FAQ

Now that we've covered the most important information, we'll wrap this up by answering a few more common questions you may have.

Can You Take Thermogenic Supplements Everyday?

While some thermogenics are designed for daily use, it's not always recommended. It depends on factors like ingredient composition, caffeine content, and individual tolerance. It's best to start with a lower dose to assess tolerance and follow the manufacturer's recommendations.

Should You Take Thermogenics on an Empty Stomach?

Taking thermogenics on an empty stomach will increase their effectiveness but may also heighten side effects. If you're new to supplements, starting with a small dose with some food is better to gauge your body's reaction. As you build tolerance, you can try taking them on an empty stomach.

Do Thermogenics Help with Belly Fat?

Thermogenics contribute to overall fat loss, including belly fat, but they're not a targeted solution for abdominal fat specifically. They work by increasing metabolism and promoting fat oxidation throughout your body. For effective belly fat reduction, combine thermogenics with a balanced diet, regular exercise, and an overall calorie deficit.

What is the Downside of Thermogenics?

Thermogenic supplements can have several potential drawbacks: Side effects like insomnia, anxiety, and digestive issues. Diminishing effectiveness over time due to tolerance. Potential for misuse as a “quick fix” instead of addressing diet and exercise.