When reading the label on an herbal preparation, keep in mind that manufacturers are prevented by current law from stating that herbs can help treat or prevent diseases or symptoms. According to the 1994 Dietary Supplement Health and Education Act (DSHEA), herbs are considered supplements, not drugs.

Manufacturers are able to claim that their products can enhance general well-being or that they can support or help improve body functions, such as circulation or digestion, so long as the claim is supported by scientific evidence.