1.   And there are dozens of drinks, usually found in natural-food stores and gyms, that contain medicinal herbs.

2.   But others contain powerful herbs that can cause serious drug interactions.

3.   Consumers should check the ingredients of dietary and nutritional products to be sure they do not contain the herb, the FDA said.

4.   The drinks, which often contain Chinese herbs, snake oil and other homeopathic types of ingredients, are wildly popular here despite their often high cost.

5.   The mixture contains several herbs grown in China that are little known in the United States, such as lacca, tribulus terrestris and paeonia lactiflora.

6.   What angers Grell is that the tea contains herbs such as senna, a known laxative, marketed as a food.

7.   If you can obtain a product containing the herb cranberry, this will be very helpful.

8.   It is then ground before being made into pills, plasters and decoctions containing other herbs.