yes! I used to take Mona Vie, which was basically a juice supplement with Acai berry and other fruits. It was sold kind of like an Avon type deal, you had to buy it off a "Mona Vie Rep" and it was 40 dollars for a wine sized bottle that you took about a tablespoon twice a day.
I took it for my cf, and my mom took it for arthritis. I swear it gave me so much more energy and made me feel better overall. It boosted my immune system too apparently, I didn't get a cold once in the winter. It's supposed to help with inflammation and stuff (which is why it helped my mom's arthritis too). My pfts got randomly higher after I started taking it. I've heard a lot of success stories about Mona Vie. However, it got reallllly expensive( although we found a website that had it for 20 dollars a bottle...which is still kind of a lot)). I'm sure any drink with acai berries would be just as good!
here's an older post about it: <a target=_blank class=ftalternatingbarlinklarge href="http://forums.cysticfibrosis.com/messageview.cfm?catid=903&threadid=29906&highlight_key=y&keyword1=mona%20vie">http://forums.cysticfibrosis.c...=y&keyword1=mona%20vie</a>