1/2 bunch fresh or fresh frozen. In all my blogging I have only read from one person that cilantro oil or pills helped.
I also wonder how advanced the breakout is for cilantro to help?
I was only one month into a recurring outbreak when I started using cilantro for the first time, (my pattern for years was 6 months of outbreak with 6 months of remission, except the first outbreak lasted one full year).