An antimicrobial composition for coating a medical device. The antimicrobial composition includes a polymeric film forming material and an antimicrobial agent comprising a material selected from the group of extract of Houttuynia cordata, sodium houttuyfonate, sodium new houttuyfonate and mixtures thereof. A medical device having an antimicrobial composition that includes a material selected from the group of extract of Houttuynia cordata, sodium houttuyfonate, sodium new houttuyfonate and mixtures thereof and a method for making same are also provided.