A normal saline solution comprising glycerin and amino acids is disclosed for use in the prevention or inhibition of biofilm formation by a population of bacteria. The concentration of glycerin in the normal saline solution may be 3% by volume, whilst the concentration of amino acids in the normal saline solution may be 3% by volume. In some embodiments, the intravenous solution is administered for 48 hours at 80 cc/hour. The solution may also be infused via intracavernous administration into an infected body cavity.