Xenadrine
Rfa 1
Xenadrine
Rfa 1 is one of the largest selling fat-burners in the country.
Manufactured by Cytodyne Technologies, it has achieved a great
deal of name recognition due to its extensive television and magazine
advertising. Xenadrine Rfa 1 combines ephedrine, caffeine and
the aspirin-like willow bark with Citrus aurantium, ginger root
and a nutrient blend that includes L-tyrosine, acetyl-L-carnitine,
fisetin, magnesium phosphate and DMAE.
The most active ingredients in Xenadrine Rfa 1 are Ephedrine,
Caffeine and Aspirin (ECA). Like other ECA-based products, Xenadrine
Rfa 1 works by inducing thermogenesis (the production of heat),
which speeds up your metabolism and burns calories. It also has
an appetite-suppressing effect, so you feel less hungry and therefore
eat less. (For more about how Xenadrine works, see Does
Xenadrine Work.)
The most powerful component in ECA-based supplements is ephedrine.
It's long been regarded as a fairly potent thermogenic compound,
but it was found to be even more effective when combined with
caffeine and aspirin. It's true that caffeine is also a fairly
good thermogenic compound, but it hardly measures up to ephedrine.
When these two nutrients 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.
When aspirin – 300 mg of it per each ephedrine/caffeine
dose – is thrown into the equation, the results are further
enhanced.
In fact, studies show that the combination of ephedrine and a
precise ratio of caffeine speeds up the metabolism and enhances
fat loss. The ephedrine/caffeine combination produces a synergistic
fat-burning effect that is even more effective than the once-popular
diet pills Fen-Phen and Redux. (For more studies on Xenadrine
Rfa 1 and its ingredients, see Xenadrine
Review.)
Xenadrine Rfa 1 contains 20 mg of ephedrine alkaloids and 200
mg of caffeine from guarana seed extract, so it has the 10:1 ratio
of these two ingredients. However, unlike most fat-loss products,
Xenadrine Rfa 1 has Citrus aurantium – a source of synephrine
– as well as ephedrine (usually it's one or the other).
The Citrus aurantium adds 5 mg of synephrine to the formulation.
As a result, the ratio of ephedrine/synephrine alkaloids to caffeine
drops to 8:1. Since ephedrine is the stronger of the two ingredients,
this could well produce a more effective product. However, this
ratio has not been tested in clinical trials, so it cannot be
said whether it produces any greater fat loss than the traditional
10:1 ratio does.
Although for most people Xenadrine Rfa 1 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 Rfa 1 contain 335 mg of ma huang extract
standardized for 20 mg of ephedra alkaloids; 910 mg of guarana
seed extract standardized for 200 mg of caffeine; 85 mg of Citrus
aurantium (bitter orange) fruit extract standardized for 5 mg
of synephrine alkaloids; 105 mg of white willow bark extract standardized
for 15 mg salicin; 50 mg of ginger root; and 225 mg of a proprietary
blend of thermogenics and fat-loss enhancers including L-tyrosine,
acetyl-L-carnitine, fisetin, magnesium phosphate and DMAE.
Dosage Information
Take 2 capsules before breakfast and 2 more capsules before your
afternoon meal. You could also take 2 capsules before your evening
meal for added effect. Do not exceed 6 capsules per day. For best
results, begin with half of the recommended dose (1 capsule two
or three times per day) for the first week to assess your tolerance
to the formulation.
For more information
about Xenadrine Rfa 1, see the following parts of this review:
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