Hello, Im new to this board. We rescused a 12 wk old kitten from a place with 20 cats and horrible living conditions. He went to the vet for test and his shots becasue he was in a fight and his tail was all messed up and he has an infection. The vet put him on antibiotics and he has horrible loose stool. Is there anything that I could give him to help make his stool more firm. (hes longhair and we did trim his behind, but we still have to clean him after every time). TIA!