| abstract |
The present invention relates to a medicament, beverage or feed comprising as an active ingredient a compound having a coumarin and / or chroman skeleton having an NGF production enhancing effect effective for the treatment, symptom improvement, and prevention of a disease requiring NGF production enhancement. Since no toxicity is especially observed in the active ingredient of the present invention, there is no possibility of side effects occurring, and thus the disease can be treated appropriately. |