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Does It Work for Weight Loss ?

Xenadrine EFX is a relatively inexpensive and widely available fat burner, which can be purchased at discount stores around the country. The product, which formerly contained Ephedra, has been reformulated after Ephedra was banned by the FDA.

The stimulant replacing Ephedra is bitter orange extract (Citrus Aurantium), containing the active ingredient Synephrine. This is the same metabolic enhancer used in the patented substance Advantra-Z (which, according to one clinical study, helped subjects burn 500 additional calories per day).

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Synephrine is chemically related to Ephedrine and is believed to have fat-burning properties similar to Ephedrine, but with allegedly less cardiovascular risk.

Here's a list of the main ingredients in Xenadrine EFX:

  • Citrus Aurantium (Bitter Orange) extract, containing the active ingredient Synephrine
  • Yerba Mate (a strong CNS stimulant), standardized for caffeine
  • Green Tea, which has thermogenic (fat-burning) action through the caffeine and polyphenols in its composition
  • L-tyrosine and acetyl-tyrosine (aminoacids which ensure proper thyroid function for optimal fat burning and mood enhancement)
  • Phenylethylamine, a stimulant which improves mood, creating a "natural high" (same substance as the one used in FenPhedra)
  • Vitamins C and B6 (which intervene in many metabolic processes, including fat-burning processes)

Efficacy and Potential Side Effects:

In theory, the combination used in Xenadrine EFX should be effective for inducing weight loss, as well as providing good energy levels and improving mood. On the negative side, Xenadrine EFX contains a tad too many stimulant agents for our taste. Therefore, it carries a higher risk of unwelcome side effects such as anxiety, jitteriness, insomnia, excessive sweating, dizziness, faintness, increased heart rate and blood pressure, gastrointestinal side effects (nausea, upset stomach, cramping, diarrhea), etc.

The high amount of caffeine is also worrisome and may compound the action of the other stimulants. As such, persons with cardiovascular disorders or cardiovascular risk factors should probably steer clear of this weight loss product.


The recommended dosage of Xenadrine is 2 tablets per day.


Xenadrine EFX is widely available in stores and online. It can be purchased online at discount prices - as low as $15 for 90 pills.


Please note: This product is for the use of adults only. Pregnant or nursing women should not take this product. Please be aware that any weight loss supplement may be associated with certain side effects and/or health risks. It is prudent to talk to your physician prior to using this or any other weight loss product, especially if you are taking other medication or suffer from a preexisting medical condition.

Disclaimer: Although the information on this page is correct to the best of our knowledge, its accuracy and completion are not guaranteed. Prior to using this or any other weight loss supplement, please refer to the instructions included by the manufacturer with the product purchased.

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