Beschreibung
Thiazide diuretics increase lithium reabsorption in the proximal renal tubule, reliably causing lithium toxicity without dose adjustment.
Mechanismus
Thiazides inhibit sodium reabsorption in the distal tubule, triggering compensatory proximal reabsorption of sodium and lithium; plasma lithium levels typically increase by 25–50%.
Klinische Bedeutung
This is a well-established, clinically significant interaction; lithium toxicity case series commonly involve thiazide initiation.
Maßnahmen
Reduce lithium dose by approximately 25–50% when starting a thiazide; monitor levels within 5–7 days of initiation and regularly thereafter.
Medizinischer Haftungsausschluss
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.