Fat Loss Dietary Supplements
The FDA is said to have of late instituted a crack down on weight loss supplements as a result of serious side effects and even death linked to some dietary supplements including ephedra. The ban on ephedra products resulted to the roll-out of so-called ephedra free weight loss supplements, these too have been shown to yield their very own fair share of conditions and they too could possibly be destined to the same fate as ephedra.
These ephedra free supplements are said to cause a rise in heart rate and a several other unintended effects on healthy men and women according to a health expert who was in the research project.
The study performed by the University of California at Berkeley was the initial one to go into the health effects of reformulated weight loss supplements. On the list of things tested for included blood pressure and pulse rate of volunteers who were given reformulated weight loss supplements made from extracts of bitter orange.
After the ban slapped on ephedra by FDA, an increasing sum of unwanted weight loss product manufactures have changed to extracts of bitter orange. The USB study involved 20 healthy volunteers, who received sole doses of a weight loss supplement or a placebo.
The diet supplements tested in the research project were Xenadrine EFX and Advantra Z, each of which contains bitter orange extracts. The used drug was shown to produce a slight increase in cardio pulse rate of up to 16 beats in one minute. The Thermogenic Xenadrine EFX for example was shown to rev up heartbeat by 13 per cent, something that makes it almost equivalent in performance to ephedra.
Bitter orange extracts contain synephrine, a ingredient specific to over 90% of citrus fruits but found in increased concentrations in fruits such as Sour orange, Zhi shi and bitter orange and which is popularly used as a remedy in the control of respiratory tract congestion and blood pressure. Xenadrine EFX features a stimulant in the ingredient, usually caffeine. The quantity of caffeine is Xenadrine is thought to be roughly the same as 3 coffee cups. This is the ingredient responsible for the surge in blood pressure and people using this product are cautioned against over dosage.
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