If you feel dizzy and unrefreshed after taking cephalosporin, there may be several conditions: 1) whether there is a previous allergy to cephalosporin; 2) whether there are other drugs taken at the same time as cephalosporin; 3) whether it may be caused by the original disease. If there is a history of allergy to cephalosporin in the past, it is considered to be an allergic condition. It is recommended to stop taking cephalosporin in time and go to the hospital for observation, and also pay attention to whether the vital signs are stable and whether the dizziness continues to worsen. If you are taking other drugs at the same time, you should also exclude the possibility of adverse reactions to other drugs. In addition, if the symptoms are obvious, you should go to the hospital promptly to investigate the cause.