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Pharmacological particulars
Pharmacotherapeutic group: Analgesics, other analgesics and antipyretics, anilides.
ATCvet code: QN02BE71
Pharmacodynamic properties
Paracetamol is a para aminophenyl derivative with analgesic properties.
Codeine is an opioid analgesic.
Pharmacokinetic properties
Both paracetamol and codeine are readily absorbed from the gastrointestinal tract. They are metabolised in the liver (codeine to morphine and narcodeine). Codeine and its metabolites are excreted almost entirely by the kidney, whilst less than 5% of paracetamol is excreted unchanged.