Xenadrine
Efx
Xenadrine
Efx is a new ephedrine-free fat-burner made by Cytodyne Technologies.
It has quickly become one of the largest sellers due to the Xenadrine
name and the concern about the side effects that ephedra-based
products can sometimes cause. Xenadrine Efx contains a proprietary
blend of ingredients that promotes thermogenesis or otherwise
helps you to stay on your diet, including tyrosine, green tea
extract, cocoa extract, yerba mate, di-methionine, ginger root,
bitter orange, DMAE and grape seed extract. Xenadrine Efx also
has vitamin B6, vitamin C, pantothenic acid and magnesium.
The most active ingredients in Xenadrine Efx are synephrine and
caffeine. These plant chemicals work by inducing thermogenesis
(the production of heat), which speeds up your metabolism and
burns calories. They also have an appetite-suppressing effect,
so you feel less hungry and therefore eat less. (For more about
how Xenadrine Efx works, see Does
Xenadrine Efx Work.)
Synephrine is found in Citrus aurantium, also known as bitter
orange. It is a milder version of ephedrine that nonetheless can
boost your metabolism on its own. Numerous studies have shown
that when ephedrine and caffeine are combined in fairly specific
ratios – 200 mg caffeine to 20 mg ephedrine (taken three
times daily) – the results are synergistic. In other words,
the effects of each are greater than the sum of their individual
effects. (For more studies on the ingredients in Xenadrine Efx,
see Xenadrine Efx Review.)
However, no such studies have been completed with synephrine.
As a result, we can't be sure that a 10:1 ratio of synephrine
to caffeine is ideal or even necessary. Moreover, the Xenadrine
Efx label only gives the total amount of their "Thermodyne
complex," so there is no indication what the actual synephrine/caffeine
ratio is in the product.
Although for most people Xenadrine Efx is quite safe, if you have
a history of heart or thyroid disease or drug abuse, an enlarged
prostate or high blood pressure, you should definitely check with
your doctor before you take this product.
Ingredients and Dosage Information
Ingredients
Two capsules of Xenadrine Efx contain 1,415 mg of a proprietary
Thermodyne complex. It contains L-tyrosine and acetyl-L-tyrosine,
green tea extract, cocoa extract, yerba mate, di-methionine, ginger
root, Citrus aurantium (bitter orange), DMAE and grape seed extract.
Two capsules also have 100 mg of vitamin C, 10 mg of vitamin B6,
12 mg of pantothenic acid and 10 mg of magnesium.
Dosage Information
Take 2 capsules before breakfast or morning exercise session and
2 more capsules before your afternoon meal. Do not take in the
evening. Do not exceed 4 capsules per day. For best results, begin
with half of the recommended dose (1 capsule two times per day)
for the first week to assess your tolerance to the formulation.
For more information
about Xenadrine Efx, see the following parts of this review:
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