I still think your best option to help his/her is to go to TSC and get the liquid B complex Durvet is usually the brand they keep. We have seen great results from it. Also you can try a hobble to help keep his legs in proper alignment.
Go to this link and scroll down till you see a chick in hobbles this works for ducklings too.
http://www.poultrypedia.com/poultry-podiatry
@ruthhope gave the dose for the liquid B complex.
Go to this link and scroll down till you see a chick in hobbles this works for ducklings too.
http://www.poultrypedia.com/poultry-podiatry
@ruthhope gave the dose for the liquid B complex.