Negative in guinea pig delayed hypersensitivity and mouse/guinea pig antigenicity studies
“Orally administered tebipenem pivoxil was negative in a delayed hypersensitivity study using guinea pigs and in antigenicity studies in mice and guinea pigs.”
Rat QWBA: extensive distribution except brain medulla, spinal cord, abdominal fat and eye lens
“Tissue distribution of radiolabeled tebipenem pivoxil was evaluated using quantitative whole-body autoradiography in male rats and showed extensive quantifiable levels of radioactivity measured in most analyzed tissues, with the exception of the brain medulla, spinal cord, abdominal fat, and eye lens.”