This definitely works for me. It levels out my mood a bit and I don't know if numb is the correct term, but I'll use it, it seems to make my input to stimuli a bit numb, allowing me to care less slightly about things which can give me anxiety. I bought the now 350mg 3.5% extract.
The thing I don't like about passionflower is if I take two or three, it can actually make me feel a bit frustrated, and stressy. I think taking one as a mild sedative is the proper use of this product. At least for me.