What are the side effects of Metabolife?
Metabolife® is an herbal dietary supplement promoted by the manufacturer as an aid for weight
loss. One of the ingredients in Metabolife®, guarana, has been linked to serious side effects.
Guarana (an herbal source of caffeine) has been linked to fast heartbeats and anxiety. Products
containing guarana may worsen high blood pressure, kidney disease, or a thyroid condition. If
you have one or more of these medical conditions, avoid using guarana, or only use it as
directed by a physician. Metabolife® used to contain an herbal ingredient known as ma huang
(ephedra). Ma huang has been linked to serious side effects such as heart attack, stroke, and
seizures. Always speak with your physician before trying any new herbal or over-the-counter
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