For such patients, benzathine penicillin by injection monthly is recommended. 對這類患者，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. 結論國產注射用苄星青霉素在該實驗條件下是安全的。
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