The Side Effects of Fat Burners

It is important to consider the side effects of fat burners before you take any thermogenic. You must be aware of the potential effects they have in your body and whether or not they are suitable for you to use.

Even the best thermogenics on the market may cause some problems for people simply because of the mechanisms through which they work.

You see, even the top fat burners contain ingredients that stimulate receptors on the central nervous system and sympathetic nervous system. The sympathetic nervous system is a division of the central nervous system and is responsible for the 'fight or flight response' in the body.

This means that when the sympathetic nervous system is stimulated, your heart rate increases, adrenalin (epinephrine) and noradrenalin (norepinephrine) surge from your adrenal glands, your blood pressure rises, your pupils dilate, your blood glucose increases, your blood level of free fatty acids increases, you may feel jittery, blood flow to your muscles increases but it decreases to the skin surface and your spleen dumps more red blood cells into your blood stream.

Side Effects of Fat Burners

All these responses are to prepare the body for action.

Even though a high-quality thermogenic fat burner is a great pre-workout supplement to give you an energy boost and promote the use of more fat for fuel, there are some side effects of fat burners that you need to be aware of.

List of the Side Effects of Fat Burners

The fat burner side effects tend to be related to the stimulatory effects they have in the body. The potential side effects are as follows:

  • Increased blood pressure

  • Jitters

  • Nausea

  • Insomnia

  • Adrenal fatigue / exhaustion
  • As a result, fat burners should not be used by everyone. In particular, adrenal fatigue is something that people should be aware of. It may result from long term use of thermogenics but may also result from other lifestyle factors.

    Since thermogenics increase the output of epinephrine and norepinephrine (the catecholamines) from the adrenal glands, long term use may lead to adrenal fatigue.

    Due to this potential side effect, XLR8 Thermogenic contains an herb called Rhodiola whose function is to support and nourish the adrenal glands.

    XLR8 Thermogenic is the only fat burner on the market that contains this herb and we at BCN believe it is the manufacturer's responsibility to ensure maximum safety for consumers and that is why this herb has been included in the formula.

    Here is a Special Report written by Adrian Lopresti, that examines the causes, symptoms and ways to overcome adrenal fatigue.


    Here is a list of people who should avoid using fat burners altogether:

  • People with high blood pressure

  • People who use blood pressure medication

  • People who have trouble sleeping

  • Pregnant women

  • Nursing mothers

  • People over the age of 65

  • People under the age of 18

  • People who show signs of adrenal fatigue
  • If you fall into one of the categories listed here, then there are alternatives for you. There are non-thermogenic fat burners available that don't stimulate the sympathetic nervous system and are therefore safe for everyone to use.

    BCN's Thyron is an example of a non-thermogenic fat burner. It works through different mechanisms to promote fat burning in the body, primarily by optimising thyroid function.

    The ingredients it contains also prevent the conversion of carbohydrate into fat and assist the body in keeping the blood sugar stable.

    With responsible use, the negative side effects of fat burners can be easily avoided, whilst still enjoying the fat-burning effects they offer.

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