Different American ginseng products may have different effects.

"Consumers have a right to know that when they reach for a high-quality ginseng product, they are buying just that - ginseng, not some ground-up bush."

A musty gift shop contained little more than ginseng products and shoddy trinkets.

One study of 64 "pure" ginseng products found that 60 percent of them were so watered down with cheaper herbs as to be worthless.

An analysis of ginseng products, for example, revealed up to a 10-fold difference in the amount of the active ingredient, even though all were labeled as containing the same amount.

Only 7 of the 55 ginseng products tested had no alcohol.

Most of the ginseng products containing alcohol were not imported by licensed agents, an agency official said.

Tests on 22 brands of ginseng products found only 9 that passed.

Variability in commercial ginseng products: an analysis of 25 preparations.

You should know that the quality of Siberian ginseng products varies a lot.