For such patients, benzathine penicillin by injection monthly is recommended. 对这类患者，每日可注射一次苄星青霉素。
Conclution The experiments provide a theoretical basis to assess the safety of the Penicillin G Benzathine injection for clinical application. 结论国产注射用苄星青霉素在该实验条件下是安全的。
