Xenadrine Efx Review
Unlike Xenadrine
Rfa 1, Cytodyne's ephedrine-free version of it's best-selling
diet pill has not been studied in a clinical setting, yet. However,
numerous studies have confirmed the effectiveness of the ingredients
contained in Xenadrine Efx. (For a related
discussion on what specific results you can expect when taking
Xenadrine Efx, see Xenadrine
Efx Results.)
Like any fat
burner, Xenadrine Efx is only as good as its ingredients. So to
get a valid Xenadrine Efx review, its important to have a complete
analysis of each of its fat-burning ingredients.
Xenadrine Efx Review:
Ingredients In Xenadrine Efx
Citrus
aurantium
A study published
in Current Therapeutic Research recently investigated
the weight-loss benefits of a supplement containing Citrus aurantium,
caffeine and St. John's wort. The researchers divided 23 overweight
individuals into three groups. One was given the Citrus aurantium
combination. Another group got a placebo, while the third group
did not receive any supplement. All of the subjects followed the
same exercise and diet routine for six weeks. By the end of the
experiment, the Citrus aurantium group had lost 13% of their fat
mass while increasing their basal metabolic rate by 3%. While
the St. John's wort, an herbal antidepressant, may have reduced
appetite to some extent (people tend to eat more when they are
depressed), the researchers felt that the synephrine/caffeine
part of the formulation was the primary reason for the benefits
in fat loss and enhanced metabolism. No published studies have
examined the benefits of Citrus aurantium on its own.
Caffeine
Scientific research shows that caffeine is not only a powerful
thermogenic stimulator, but also works synergistically with ephedrine
and synephrine. Studies show that caffeine increases the level
of free fatty acids in your blood, thereby making fat a more abundant
source of fuel.
One study found a 100% increase in plasma free fatty acids after
taking 330 mg of caffeine. Studies also show that during aerobic
exercise, caffeine can increase the rate of fat oxidation (fat
burning) by as much as 50%. That means that if you spent 30 minutes
doing moderately intense aerobic exercise and burned 500 calories,
roughly half of those calories would come from fat oxidation.
So by adding caffeine to your pre-workout supplement list, you
could burn an extra 125 calories! Add that up over a period of
weeks, months or years, and you'll understand why adding caffeine
is important for jump-starting your weight-loss efforts.
However, scientists have discovered a more profound synergistic
effect when caffeine is combined with ephedrine. Together, these
two nutrients are much more beneficial than the combined effects
when each is taken separately. Since synephrine is a chemical
cousin to ephedrine, it may have a similar synergistic effect
with caffeine.
A study in the American Journal of Clinical Nutrition
found that when green tea was taken instead of pure caffeine,
there was a greater thermogenic effect. This six-week study compared
the benefits of pure caffeine (50 mg), green tea extract (with
50 mg of caffeine and 90 mg of EGCG) and placebo. The pills were
given three times per day. The green tea group experienced a significant
4% increase in thermogenesis and a 4.5% boost in overall energy
expenditure. (For more discussion of Xenadrine Efx's thermogenic
effects, see Does Xenadrine
Efx Work.)
Cocoa extract contains some caffeine as well as other plant chemicals
that act as stimulants, including theobromine. One four-day study
with rats found that theobromine administration produced a very
favorable reduction in fatty-acid levels in the blood, suggesting
that the fat may have been metabolized for energy. Unfortunately,
the rats had to consume 700 mg of theobromine per kg of body weight
to get this effect. Given that theobromine only makes up about
2% of cocoa by weight, a human would need to eat pounds of chocolate
to get this same effect. No studies have yet been published with
humans taking more reasonable amounts of theobromine or cocoa
extract.
Yerba mate contains caffeine as well as smaller amounts of the
stimulants theophylline and theobromine. As such, it should be
an effective source of caffeine, provided that enough of the plant
extract is consumed. However, to date no research has been published
on the efficacy of yerba mate as a fat burner.
L-tyrosine
Research suggests that supplementing with tyrosine may minimize
the degradation of the neurotransmitters involved in the metabolic
process while enhancing the thermogenic effects of the ECA stack.
With more raw material available, the neurotransmitters controlling
metabolism are produced at a higher level with beneficial results.
The increases in alertness and energy level will also make it
easier to stick to your diet program.
Ginger root
Ginger has a long history of use as a treatment for motion sickness.
In one double-blind, placebo-controlled study by Danish researchers,
naval cadets unaccustomed to sailing in rough seas were given
1 gm of ginger root or placebo every hour for four hours. The
ginger root reduced the tendency toward vomiting and cold sweating.
Thermogenic formulations only produce gastrointestinal distress
in some sensitive individuals, so ginger should definitely be
able to relieve these much milder symptoms. There are no studies
showing that ginger by itself has fat-burning properties.
Di-methionine
Methionine is an amino acid that must be obtained from the diet,
as the body cannot manufacture it. It assists in fat breakdown
(lipolysis), although it has many other roles in the body. Methionine
is included in fat-burner formulations because of its ability
to support greater levels of fatty-acid oxidation. However, it
has not been studied as a fat burner on its own, so it is not
known how much methionine is needed to promote significant levels
of fat loss.
DMAE
DMAE can enhance acetylcholine function in the central nervous
system. The end result in more energy and alertness, potentially
boosting your willpower as you cut your calories. While DMAE has
been shown to increase mental functioning in many disease conditions
(including Alzheimer's disease and attention deficit disorder),
no one has yet studied its impact on fat loss as a separate supplement.
Grape seed extract
Grape seed extract is a powerful antioxidant with numerous health
benefits. However, no published study has shown that it actually
has the ability to redirect fatty acids away from the fat cells,
as some products claim. Use it as a way to fight free radicals
and stay healthy. As far as fat burning is concerned, don't hold
your breath.
While this
Xenadrine Efx review sheds light on the clinical studies performed
on Xenadrine Efx's ingredients, the only real way to determine
its effectiveness is to actually try the product out for yourself.
To compare
prices of Xenadrine Efx among dozens of top on-line sites, see
Cheapest Xenadrine Efx Online.
For more information
about side effects associated with Xenadrine Efx, see Xenadrine
Efx Side Effects.
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