Cephalosporin overdose can lead to secondary infections, liver and kidney impairment, and other consequences. 1. If you just take too much cephalosporin antibiotics at one time, you may experience digestive symptoms such as dizziness, nausea, abdominal discomfort, etc. You can drink more water to promote the excretion of drugs, and if you experience obvious physical discomfort, you should go to the hospital in a timely manner in order to avoid adverse effects. 2. If a large number of long-term use of cephalosporin antibiotics, the destruction of the normal bacterial flora, resulting in the body flora imbalance, the body’s immunity is reduced, the emergence of secondary infections, such as infection with fungi thrush and so on, in addition to mental changes, blood system hazards, and liver and kidney toxicity and other hazards. Therefore, when you take too much cephalosporin antibiotics, you should go to the hospital immediately to avoid adverse reactions and jeopardize your health.