Описание
Carbamazepine induces CYP enzymes that convert acetaminophen to its hepatotoxic metabolite NAPQI, increasing the risk of acetaminophen-induced liver injury even at therapeutic doses.
Механизм
Carbamazepine strongly induces CYP2E1 and CYP3A4, shifting acetaminophen metabolism away from glucuronidation toward the reactive NAPQI pathway; concurrent depletion of hepatic glutathione stores worsens toxicity risk.
Клиническое значение
Case reports document hepatotoxicity in patients on carbamazepine taking recommended doses of acetaminophen; the therapeutic window is narrowed.
Тактика ведения
Use the lowest effective acetaminophen dose, avoid prolonged use, and counsel patients to abstain from alcohol; consider alternative analgesics where possible.
Медицинский отказ от ответственности
This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.