Two glasses a day (of at least 50% Cranberry juice) may prevent recurrent infection.
But cranberry juice is usually heavily sweetened and that is a lot of refined sugar to be downing on a daily basis...especially if you aren't even enjoying it!
I guess whether it's worth it depends on an individual woman's degree of susceptibility to these infections. Because it does vary.
On the other hand, though cranberries have the marketing behind them, blueberries also contain proanthocyanidins. You might find those more palatable?
When I'm well I'll go looking for something better. That's a good tip about blueberries, thanks. keep to the Fen Causeway