I drink 1 liter of kefir a day because I find it extremely helpful to lose weight. But recently i heard that excessive usage might cause some diseases like podagra. However I was unable to find more information about it.
I'll post contents of it here. 1 liter kefir has:
+10x10^8 kob probiotic microorganisms
I'll skip carb, protein etc.
Ingredients: pastorized cow milk, water, kefir culture, probiotic microorganisms