I've looked everywhere and the only kinds i can find are the flush-free and time released. Will the time released one work or do I need to keep looking? I have a 3 1/2 week old blue runner duck that has shaky legs pretty bad. I want to make sure what I give her will do the trick. All the info I keep looking at has me all confused. Some say use it some say don't.
I know not to use the flush free kind and the health food store I think had brewers yeast. Would the brewers yeast be better if I can't find the right niacin?
