Paracetamol metabolism in pregnancy.

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Abstract
Paracetamol disposition was studied in groups of pregnant and non- pregnant women of comparable age. Paracetamol apparent oral clearance was 58% higher and elimination half-life was 28% lower in the pregnant women compared to the control group. The higher clearance in the pregnant women was due to increased activity of the glucuronidation (75% higher) and oxidative (88% higher) pathways of paracetamol metabolism. There was no difference between the two groups in paracetamol sulphation or renal clearance of unchanged drug.