The New York Times recently reported on a link between an increase in liver injuries over the past decade and the largely unregulated world of over-the-counter dietary supplements. According to this article, a shocking 70 percent of dietary supplement companies are not following basic quality control standards, in addition to other serious concerns.

Use caution when selecting and taking supplements. Herbal supplements in particular may appear more “natural” but can contain a highly concentrated amount of their active ingredient, at a level not found in nature. “[L]iver injuries attributed to herbal supplements are more likely to be severe and to result in liver transplants,” according to new research from the National Institutes of Health.

Seek guidance from your doctor on whether and what to take, and know your legal rights and limitations if something goes wrong.