a total of 1244 patients with acute upper or lower respiratory tract infection were randomized to receive , twice daily for 7 days , either capsules of enteric-coated pellets of erythromycin base at a dose of 1 g/day or erythromycin ethylsuccinate tablets at a dose of 2 g/day in a single-blind , multicentre study .
C0014806
erythromycin base
C0014810
erythromycin