The Center for Science in the Public Interest wants the FDA to put an end to what they call "functional foods."

You've seen them--the drinks that claim they'll improve your memory because they're enhanced with Ginko Biloba, or the cereal with Echinacea to keep you cold free.

Sounds good, so why is the CSPI trying to get rid of them? News Specialist Lisa Conley explains why they can actually be dangerous.

The juice looks harmless enough. With Ginko Biloba its supposed to "enhance your mind." But Ginko also acts as a blood thinner. And like other natural additives, it could be dangerous.

They are products you recognize, you may even have some of them in your pantry. Arizona teas, Ben and Jerry's smoothies, Hansen beverages, and the list goes on. More than 75 products that the Center for Science in the Public Interest says are dangerous.

The products made the list because they have natual herb additives. Because even though herbs and vitamins are thought to have a positive effect on our health, they sometimes can be extremely dangerous, especially if you're also taking certain medications.

Dennis Harper, holistic practitioner: "ASPIRIN THAT INTERACTS WITH CUMATIN. YOU'VE ALSO GOT PICNOGINAL THAT COULD DO THAT OR OMEGA-3 OILS OR HIGH DOSES OF VITAMIN E THAT COULD DO THAT."

Here's another example: the herbal product Kava Kava claims to "enlighten your senses" but it also has properties similar to valium.

Echinacea, sometimes taken to avoid a cold, can cause allergic reactions, including asthma attacks, and it may counteract drugs that supress the immune system.

Ginko Biloba might make your mind sharper, but it also acts as a blood thinner. Taken with some medications, it can cause excessive bleeding or stroke.

Dennis Harper, holistic practitioner: "WHAT THE FOOD COMPANIES ARE TRYING TO DO IS CASH IN ON THE CRAZE OF PEOPLE TAKING HERBAL PRODUCTS AND VITAMINS AND MINERALS. I THINK IT'S BETTER IF PEOPLE DO THE RESEARCH AND TREAT THEIR BODIES ACCORDINGLY. BECAUSE THEIR BODIES ARE UNIQUE."

As a practitioner who works in Holistic Medicine, Harper says the bottome line is to be aware of labels and understand the potential benefits and the drawbacks herbs and vitamins.

And if you're taking any medications, be aware that even the small amounts of herb and vitamin supplements found in some of these foods could be dangerous.