Can I drink Pomegranate Juice while taking my Blood Pressure Medications?

I had read that people who are taking certain Blood Pressure medications to lower their pressure should be aware that drinking Pomegranate juice might lower their pressure too much, to the point of dangerously low BP readings. I currently take, on a daily basis, Lisinopril (40 mg) and a diuretic (Hydrochlorothiazide - 25 mg). I have heard such positive things about drinking Pomegranate juice and would like to know if I can, and if so, how much should I drink? Thank you.