Compositions comprising antimicrobial peptides

A pharmaceutical composition for treating a biofilm comprising:

• a. a cationic antimicrobial peptide or pharmaceutically acceptable salt thereof, wherein the cationic antimicrobial peptide is SEQ ID NO:
• 10;
• and
• b. a pharmaceutically acceptable aqueous carrier;
• wherein the pharmaceutical composition is in the form of a liquid;
• wherein the cationic antimicrobial peptide is present at a concentration of about 10 mg/mL;
• and wherein the pharmaceutical composition is formulated for irrigating an open wound, an implant, a medical device, a prosthetic, or any part thereof.