Hello, I love this herb, it helps a great deal in my bladder formula. I use marshmallow, uva ursi, corn silk, rose hips and cramp bark. Â I make a tea, it is excellent. Â I believe the uva ursi is an antimicrobial when used for the bladder infection. It also helps reduce swelling and that relieves the inflammation. Hope that helped. Â Have a blessed day, Joanne