Описание
Cetirizine has mild CNS depressant properties that can be additive with the sedative effects of alprazolam, increasing the risk of excessive sedation, psychomotor impairment, and respiratory depression.
Механизм
Cetirizine, although a second-generation H1 antihistamine with reduced CNS penetration, still exerts measurable H1 antagonism in the brain, producing additive CNS depression with benzodiazepines acting on GABA-A receptors.
Клиническое значение
Studies confirm additive sedation on psychomotor testing; the interaction is clinically relevant when both are used at higher doses or in elderly patients.
Тактика ведения
Advise patients against driving or operating machinery; consider reducing alprazolam dose; counsel on alcohol avoidance.
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.