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Table of side effects and interactions guide may be helpful


Useful cross-references and indexes




World Health Organization (WHO) Monographs (WHO, 1999, 2001, 2003) (Reviewed Radix Valerianae, Radix Ginseng, Herba Echinaceae Purpureae)

Type of organization

International, nonprofit responsible for resource organization

Substances reviewed

Major medicinal plants; selection based on extent of use, worldwide importance, and availability of data


Book of summary monographs

Focus on safety/risk

Safety, efficacy, and quality control are considered

Reliance on primary data

Some primary and some secondary sources are cited, including foreign language articles

Use of nonhuman data

All types of data are considered

Description of limitations

Data limitations are described for efficacy, but not for safety

Description of literature search strategy

Describes sources of information searched and timeline of scientific literature search

Use of current literature

Several volumes have been published since 1999; additional safety concerns may arise well after the review was prepared, due to the length of time it takes to get agreement on a monograph and print it

Starting assumptions/appearance of impartiality


Use of peer review

Extensive peer review

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