Using AIs for keeping water retention off is just flat out retarded.
Hell you could use a diuretic for that.
Here's some advice... if you are experiencing water retention then either :
1 - Clean up your fucking diet
2 - stop using the compound that is causing this
If you don't need it for what it is indeeded for, then don't use it. That is like taking proteaser inhibitors for the side effect of leaning up.