Sentence:  Consider <WSD>ephedra</WSD>, an herbal stimulant that gained popularity as a weight-loss supplement in the 1990s — until hundreds of people reported ephedra-related problems including heart attacks, seizures and even deaths. 
Meaning of the word marked with <WSD> tags:  A stimulant derived from the plant (noshow=1) used in traditional Chinese herbal medicine and in over-the-counter weight-loss aids.