This invention relates to a macrolide composition, more particularly an amorphous form (Form-III) of 3R, 4S, 5S, 6R, 7R, 9R, 11S, 12R, 13S, 14R-6-[(2S, 3R, 4S, 6R)-4-dimethylamino-3-hydroxy-6-methyloxan-2-yl]oxy-14-ethyl-7, 12, 13-trihydroxy-4-[(2R, 4R, 5S, 6S)-5-hydroxy-4-methoxy-4, 6-dimethyloxan-2-yl]oxy-10-(2-methoxyethoxymethoxy-imino)-3, 5, 7, 9, 11, 13-hexamethyl-1-oxacyclotetradecan-2-one or roxithromycin characterised by the absence of peaks in the infra-red spectrum of amorphous (Form-...