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Combination of
Phenazone Analgesic
Chloral hydrate Sedative
Clinical data
Routes of
Legal status
Legal status
CAS Number 480-30-8
ATC code N05CC04 (WHO)
PubChem CID 10188
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Dichloralphenazone is a 1:2 mixture of antipyrine with chloral hydrate. In combination with paracetamol and isometheptene, it is the active ingredient of medications for migraine and vascular (tension) headaches, including Epidrin and Midrin. Performance impairments are common with this drug and caution is advised, for example when driving motor vehicles. Additional uses of dichloralphenazone include sedation for the treatment of short-term insomnia, although there are probably better drug choices for the treatment of insomnia.[1]


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