How do you know if herbal supplements' claims are true?

Manufacturers of herbal supplements are responsible for ensuring that the claims they make about their products aren't false or misleading and that they're backed up by adequate evidence. But they aren't required to submit this evidence to the FDA.

So be a smart consumer. Don't just rely on a product's marketing. Look for objective, research-based information to evaluate a product's claims.

To get reliable information about a particular supplement:

• Ask your doctor or pharmacist. Even if they don't know about a specific supplement, they may be able to point you to the latest medical guidance about its uses and risks.
• Look for scientific research findings. Two good sources are the National Center for Complementary and Integrative Health and the Office of Dietary Supplements. Both have websites that provide information to help consumers make informed choices about dietary supplements.
• Contact the manufacturer. If you have questions about a specific product, call the manufacturer or distributor. Ask to talk with someone who can answer questions, such as what data the company has to substantiate its products' claims.