I ran out of lisinopril 40mg.can i take 2 lisinopril hctz (hydrochlorothiazide) 10-12.5mg?

These are different: medications as one is a combination pill. Taking someone else's medication is generally not a good idea, and taking your own from some time ago without your doctor's approval may bring more harm than good. There may be a reason why your doctor does not want you to take the combination pill, as HCTZ (hydrochlorothiazide) is a diuretic and does different things to your body besides control your pressure. Ask your dr.