Pros: Plenty of milk! :-)
Cons: Not having enough freezer containers for all of the extra milk???
As soon as my son got more dependent on bottles (I have to pump exclusively now since he refuses the breast) and his appetite increased tremendously during his growth spurts...I was unable to pump enough milk for him. I started taking these capsules to help produce extra milk so that daddy could feed him when I went to night school everyday...and boy did I make plenty!
It took me about 2 days before I saw any increase, but now I can pump twice as much as I did before!
As for the comment below about the plugged ducts...as soon as I was pumping enough milk, I decreased the pill intake from 3 to 2 pills 3 times a day and massage each breast for a few minutes before (and sometimes during) pumping.