Can low blood sodium be caused by taking hctz (hydrochlorothiazide) for long time?

Yes. Hyponatremia, or low blood sodium is a known and potentially very dangerous side effect of hydrochlorothiazide (hctz). It can happen in people at any point in therapy, even if the medication had been well tolerated for years. It tends to happen more often in the elderly. If it occurs, once properly treated, the patient should not go back on thiazide-type diuretics again.

Related Questions

Got the results of a blood test. Low sodium and creatinine. I'm on lisinipril and hctz (hydrochlorothiazide). Could that have caused it? Also have pain under low-right ribs

Too much alcohol. The combination of lisinopril, HCTZ, (hydrochlorothiazide) and 3 alcohol drinks a day can cause low sodium. That's too much alcohol - sorry. The pain under your right ribs may be originating in your liver or gall-bladder as both live there. That should be checked. Low creatinine (even below the lab reference) is not harmful and reflects your muscle mass and normal kidney function. (I presume you're pretty small). Read more...