Azithromycin (Zithromax 1 g orally as a single dose) may be substituted for erythromycin because of improved oral absorption a broader spectrum of antibacterial properties and better tolerance.

• 阿齐霉素（齐斯若马，1克口服用药一次）也可用红霉素替代，因为红霉素抗菌谱广，口服吸收好，不易耐药。