An emulsion composition comprising (1) a compound (I) represented by the formula (I) wherein each symbol is as defined in the specification (2) an anionic synthetic phospholipid in a proportion of about 0.0001 about 5% (W/V) relative to the composition in total, and (3) a naturally-occurring phospholipid in a proportion of about 0.1 about 10% (W/V) relative to the composition in total is provided.