Could be. I know when I take certain antibiotics I feel funny. When I had Bronchitis last month, I BEGGED my doctor not to prescribe one particular antibiotic because it makes me terribly nausious (sp?) So, if it can do that to me, why can't it make her also feel a bit icky?

Sorry to hear that she's having potty issues. I'm experiencing the same thing right now -- Pouncer has been in and out of the litterbox alllll day. I have a vet appointment tomorrow and my heart is breaking for the poor boy. Pouncer sends heabumpies of commiseration to Peanut and I send lots of prayers.