Fat Reduction Dietary Supplements

The FDA is said to have just lately instituted a crack down on weight loss supplements as a result of serious side effects and even death linked to some dietary supplements such as ephedra. The ban on ephedra products resulted to the introduction of so-called ephedra free weight loss supplements, these too are said to yield their fair share of troubles and they too might be destined to the same fate as ephedra.

These ephedra free supplements have been shown to cause an increase in heartbeat and a few other negative effects on healthy folks according to a health expert who was in the study.

The study conducted with the University of California at Berkeley was the primary one to check out the health effects of reformulated weight loss supplements. One of the things tested for included blood pressure and pulse rate of volunteers who were given reformulated weight loss supplements made from extracts of bitter orange.

Since the ban slapped on ephedra by FDA, an ever-increasing figure of body fat loss product manufactures have switched to extracts of bitter orange. The USB study involved 20 healthy volunteers, who received single doses of a weight loss supplement or a placebo.

The diet supplements tested in the study were Xenadrine EFX and Advantra Z, each of which possesses bitter orange extracts. The managed drug was shown to influence a rise in cardio pulse rate of up to 16 beats in one minute. The Thermogenic Xenadrine EFX for example was shown to rev up heart rate by 13 per cent, something that makes it almost similar in performance to ephedra.

Bitter orange extracts include synephrine, a part contained in over 90% of citrus fruits but found in greater concentrations in fruits such as Sour orange, Zhi shi and bitter orange and which is popularly used as a remedy in the management of respiratory tract congestion and blood pressure. Xenadrine EFX includes a stimulant in the part, usually caffeine. The amount of caffeine is Xenadrine is believed to be the same as 3 coffee cups. This is the ingredient responsible for the surge in blood pressure and patients using this product are cautioned against over dosage.

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