Research and analysis

ACMD review of the evidence on the use and harms of diphenidine

The Advisory Council on the Misuse of Drugs has undertaken a review of the evidence on the use and harms of diphenidine and other related substances.

Documents

ACMD review of the evidence on the use and harms of diphenidine

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Letter from ACMD to the Home Secretary: ACMD review of diphenidine

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Details

In 2022 the Advisory Council on the Misuse of Drugs (ACMD) was commissioned to give advice on the appropriate classification and scheduling of diphenidine under the Misuse of Drugs Act 1971. Diphenidine was added to schedule II of the Convention on Psychotropic Substances of 1971 during the 64th Commission on Narcotic Drugs (CND) meeting in April 2021.

The ACMD has written this report describing the use and harms of diphenidine and related substances ephenidine, methoxyphenidine, fluorolintane and isophenidine. The report provides recommendations of their classification and scheduling, following a thorough review of the evidence available.

Updates to this page

Published 25 May 2023
Last updated 26 May 2023 + show all updates
  1. Accessible versions of the report and letter added.

  2. First published.

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