“Initial uptake of cefdinir was inhibited by dipeptides ( glycyl‐l‐proline and glycylsarcosine), β‐lactam antibiotics (cephradine, cefixime and penicillin V), and monocarboxylic acids (acetic acid and l‐lactic acid), whereas the uptake of cephradine and cefixime was not inhibited by monocarboxylic acids.”