Past Issues

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Cerebral Metabolic Enhancers

The approval of four widely-sold anti-dementia medicines, was revoked after clinical tests for re-evaluation showed no effectiveness.

Since this result suggested a problem in clinical testing at the approval stage, we requested that all similar medicines be re-evaluated.

After the re-evaluations, most of these medicines disappeared from the market.


  • YAKUGAI Ombudsperson
  • Tie-up Group

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