Should lisonpril hctz (hydrochlorothiazide) be discontinued if i have had diarrhea since i started taking it 7 days ago. blood test shows dehydration and elevated co2.

Yes and you should: Contact your prescribing doctor so that another medication can be used instead to control your blood pressure. Hydrate with gatorade if possible.

Diarrhea and meds: If you had diarrhea (d), your co2 would be low due to loss of alakli in your stool. Neither lisinopril/ hctz (hydrochlorothiazide) (l) are known to cause diarrhea. If you had d for 7 days, you need to contact your physician (p) or go to the er. I would stop your l, as your blood pressure would be low due to fluid loss seen with d. Is your potassium low? What fluids are you ingesting? Call your p or go to an er for help.