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Arrhythmogenicity of weight-loss supplements marketed on the Internet.

Abstract：

BACKGROUND:We examined nonprescription weight-loss supplements marketed on the Internet for ingredients with potential arrhythmogenic and life-threatening cardiac adverse effects. OBJECTIVE:We aimed to define the risks of life-threatening cardiac adverse effects that are associated with weight-loss supplements marketed on the Internet. METHODS:We entered the key words "weight-loss supplements" and "diet pills" into three popular Internet search engines. The top four nonoverlapping hits from each search engine were purchased. After receipt, the products and their ingredient lists were inspected, and Medline and the Natural Medicines Comprehensive Database were searched for reports of significant associations between each ingredient and various key words for life-threatening cardiac adverse effects. RESULTS:All supplements had the list of ingredients on the label. We identified 60 different ingredients (7.25 +/- 4.66 per supplement; range 1-21). Eleven ingredients representing eight different substances (because multiple names were used for some substances) were each associated with two or more reports of life-threatening cardiac complications or death. Eight of the 12 products contained one or more such ingredients, but none of these eight products had warnings about life-threatening cardiac adverse effects on the Web pages, on the labels, or in the package inserts. One product contained ma huang (Chinese ephedra), even though the marketing of ephedra-containing products is banned in the United States. CONCLUSIONS:The Internet provides easy access to weight-loss supplements, several of which contain ingredients with potentially life-threatening adverse effects. There is a need for increased public education and awareness regarding such weight-loss products.

journal_name

Heart Rhythm

journal_title

Heart rhythm

authors

Nazeri A,Massumi A,Wilson JM,Frank CM,Bensler M,Cheng J,Saeed M,Rasekh A,Razavi M

doi

10.1016/j.hrthm.2009.02.021

subject

Has Abstract

pub_date

2009-05-01 00:00:00

pages

658-62

issue

5

eissn

1547-5271

issn

1556-3871

pii

S1547-5271(09)00170-2

journal_volume

6

pub_type

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