Please can some one advise me how much nician my 6 week old ducklingt

[willl]

Please can some one advise me how much nician my 6 week old duckling can have, I have got nician flush free 100mg, how much can I give her. And is she allowed to still have brewers yeast. Thanks

 

[cosbackyard]

I just broke up one of those tablets and mixed it with their water. I wasn't too particular about the amount of water I mixed it in and mine are fine.
No idea on the yeast, though.