Dirithromycin is primarily used as an antibiotic to treat various bacterial infections. It is effective against respiratory tract infections, including bronchitis and pneumonia, caused by susceptible strains of bacteria. Additionally, it is utilized for treating skin and soft tissue infections, such as cellulitis and impetigo. The compound works by inhibiting bacterial protein synthesis, thereby stopping the growth and spread of bacteria. It is often prescribed for patients who may have allergies to penicillin or other antibiotics. Due to its extended half-life, it allows for once-daily dosing, improving patient compliance. Dirithromycin is particularly valued in cases where long-term antibiotic therapy is required, as it minimizes the frequency of administration and reduces the risk of side effects.