Azithromycin API: Macrolide Antibiotic Uses and Formulations
Azithromycin is a widely prescribed macrolide antibiotic. This article summarises how the API is used in oral and injectable products and key quality requirements.
Overview of Azithromycin API
Azithromycin is a macrolide‑like azalide antibiotic used for a wide range of community‑acquired infections, including respiratory tract, skin, and sexually transmitted infections. Its long half‑life allows for short, convenient treatment courses. As an API, it is formulated into tablets, capsules, oral suspensions, and parenteral products.
Main Indications
- Upper and lower respiratory tract infections
- Skin and soft tissue infections
- Uncomplicated genital infections due to Chlamydia trachomatis
- Non‑gonococcal urethritis and cervicitis
API and Formulation Considerations
Azithromycin is lipophilic and sensitive to moisture, requiring appropriate protective packaging and desiccants. Key quality attributes include assay, impurity profile, residual solvents, and control of isomeric composition. Formulations often use enteric coatings or suitable excipients to improve stability and patient acceptability.
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Our team of pharmacists and medical writers share accurate, easy-to-understand medicine information for healthcare professionals and patients.
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