I just found this article on the Bicycling.com site regarding road cyclist Tyler Hamilton:
"The 38-year-old cyclist tested positive for a banned substance stemming from an over-the-counter herbal antidepressant."
Here is a link to the complete article: Tyler Hamilton Retiring From Cycling.
Another cyclist's career R.I.P. due to doping, bummer.
Lynn Smythe AKA the Bike Diva