| Abstract;Rikko-san is a Chinese traditional preparation widely effective for various pains such as acute pain in oral, maxillary and facial areas, tooth ache, post-extraction pain, glossodynia and neuralgia. Especially in the dental field, it has been used for a single use. Rikko-san is composed of 5 crude drugs of asarum root, black cohsh root, ledebouriellae radix and gentianae scabrae radix. Since ledebouriellae radic is included in the preparation, pseudo-aldosteronism might be induced by its continuous intake. Rikko-san is very useful as a choice for pain relief. |