They sell passion flower extract at health food stores in dropper vials. If this is real passion flower and not random Florida flowers, you would be smoking an MAOI inhibitor. Certain foods and medications should not be taken in conjunction with any MAOI inhibitor: IE - Prozac.... Cheese for some reason, etc.
These are generally good for uplifting moods but not nearly as strong as ganja. If anything I'd soak the leaves it in alcohol much like Blue Lotus.
But be careful though, MAOI inhibitors inhibit the MAO enzyme in your stomach to slow down the metabolism speed and as a result it makes particular things stronger with the same dose - such as psilocybin.