Look for probiotics containing Lactobacillus acidophilus. Acidophiliz+ was a good one but is no longer produced. I believe you can get bene-bac in Canada but I recommend avoiding it since it contains Enterococcus faecium which can be quite harmful to humans if ingested (wash hands thoroughly after touching it or any reptile poop to minimize risk).
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!