Effect of glycerol on biofilm forming bacteria and fungi that changes the microbes sensitivity to pro and anti-biofilm non-toxic, non-bonded plasma amino acids and amino acid derivatives

A method of desensitizing microbes to pro-biofilm amino acids and amino acid derivatives in plasma comprising administering a sufficient amount of glycerol. A method of sensitizing microbes to anti-biofilm amino acids and amino acid derivatives in plasma comprising administering a sufficient amount of glycerol. Methods of increasing a plasma concentration of glycerol comprising administering a sufficient amount of glycerol. A method of treating an infection and/or contamination comprising applying glycerol and anti-biofilm amino acids and/or amino acid derivatives to a surface to be treated and/or water to be treated. A method of treating a biofilm producing viral infection comprising administering a sufficient, non-toxic concentration of glycerol. A method of treating a protozoal infection comprising administering a sufficient, non-toxic concentration of glycerol. A method of treating a hybrid infection comprising administering a sufficient, non-toxic concentration of glycerol and anti-biofilm amino acids and/or amino acid derivatives.