Here's more information on our quiz questions & answers:

1. According to the Food and Drug Administration (FDA), St. John's Wort can make people more sensitive to the sun. It can also affect the way drugs such as antidepressants and sleeping pills work.
2. The American Society of Anesthesiologists (ASA) recommends stopping supplements at least two weeks before surgery. If you have been taking supplements regularly, ASA suggests asking your doctor how to wean yourself off them prior to any surgery.
3. Ephedra, also known ma huang, used to be found in many weight loss products. The Food and Drug Administration (FDA) now bans the sale of dietary supplements containing ephedrine alkaloids.