I kept telling all the feed store people that I wanted unmedicated mix and this is what they kept trying to sell me.
Medicated feed is recomended because it reduces the risk of the babies getting sick.
I have never heard of any bad effects of feeding medicated feed. Carrie, ducklings systems cannot handle the medication in the feed-it does not pass through their systems but builds up to deadly levels. Talk to your feed store and see if they will order you some non-medicated feed. We use unmedicated start and grow for the ducklings. The major feed companies all make duck starter, and know not to medicate it.