Can you tell your kava from your chamomile? Do you know what's up with St. John's wort? With so many herbs in the marketplace these days, even the experts have a hard time keeping track.

Here's a simple quiz to see how savvy you are about herbs. (Hint: The answers to all these questions can be found in the articles under "Herbs at a Glance" in the Natural Health section.) Don't worry if you don't ace the test on the first go round—just taking the time to try your luck at it brings you one step closer to being a smart herbal supplement user.

Choose one answer to each of the following questions:

Which herb can help you concentrate and do better on tests?

ginkgo
ginseng
St. John's wort
all of the above
none of the above

Which herb can help prevent a urinary tract infection?

ginger
cranberry
peppermint
flaxseed
none of the above

Which herb may be helpful for period cramps?

peppermint
chamomile
both of the above
none of the above

Which herb can help relieve and heal a sunburn?

calendula
aloe vera
chamomile
none of the above
all of the above

Which herb may help you lose weight safely and without side effects?

senna
ephedra
green tea
kava
none of the above

Which herb is used to help treat colds?

garlic
echinacea
both of the above
none of the above

Which herb can give you a quick boost if you're feeling down?

ginseng
St. John's wort
both of the above
none of the above

Which herb may be helpful for acne?

calendula
tea tree oil
both of the above
none of the above

Which herb may be useful for constipation?

psyllium seed
flaxseed
both of the above
none of the above

Which herb may help relax you at bedtime?

chamomile
valerian root
both of the above
none of the above