I use a product called 'Superjuice for Dogs'. The breeder sent along a little bottle when I got Emy and I've been using it for a month now. You just spray it over the kibble, she loves it and her poops are good and have been good since I got her ..she's now 15 weeks old. Their website is:
www.petsuperjuice.com
I bought a larger size on Amazon so I would have it when I ran out of the little bottle. It works great. check out their website.