Does Ephedrine cause kidney stones?

[L.A.X]

I've actually read that drinking a dark beer a day cn help combat kidney stones? Anyone else hear that?

 

[8-]]

I've been cycling my use of Xenadrine since May this year (probably using it for a total of 3.5 months).

I normally drink plenty of water, but after reading this I think that I'll make sure that I drink plenty every day.