well i know for sure that Missing Link is a great supplement for Itching. Well that's what I used for Oreo who would itch till he bled himself.
I mixed Missing Link and put him on Innova and it worked like a charm.
www.naturapet.com
you might want to try missing link, i hope your baby is okay and that the itchies go away, i know it can be miserable both for the pup and the owner
but i wish you the best!