This is not an intellectual property law question. Further, no lawyer could answer this question without knowing precisely what supplement you bought and reviewing the ingredients contained therein. I
Anything purchased on line is a risk that should be carefully undertaken. I found metaform on-line as an energy supplement on one website, to a pain reliever. produced in Mexico.
Talk with your pharmacist or doctor beofre buying any medicine on-line. With the lack of control and good manufacturing practices in many other countries, I strongly urge purchasing only from reputable sources. (also a google search of ephedra and caffeine links to numerous articles on the increased risk of heart attacks associated with these ongredients.
My disclaimer is simply that Avvo already has an adequate disclaimer.