Very high tissue penetration and concentration intracellularly means in vivo activity may not be predicted by in vitro testing - e.g. Salmonella species.
COVID-19:
Antimicrobial class: Macrolide
Pregnancy category: B
Average serum half life: 68 hours
Urine penetration: Poor
Lung penetration: Therapeutic
CSF penetration: Poor
Biliary penetration: Therapeutic