The wildly popular prescription diet pills Redux, Pondimin, and Fen-Phen illustrate the dangers of using drugs -- even prescribed drugs -- to control weight.
Some herbs can have serious side effects and should be avoided all together, such as ephedra and fen-phen products, which can significantly increase blood pressure, heart rate, and overall stimulation of central nervous system.
Just as the OTC weight loss supplements were affected by ephedra being removed from market shelves, prescription diet pills underwent similar backlashes when fen-phen was pulled.
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