Compositions including a complex of fatty acids (e.g., including one or more C4 to C40 fatty acids, such as a C4 to C20 fatty acid) and one or more amino acids (and particularly one or more amino acids having electrically charged basic side chains, e.g., Arginine, Lysine, etc.) for use as an anti-pathogenic composition. In particular, described herein are compositions of decanoic acid:Arginine in which the decanoic acid and Arginine for a complex having a lamellar supramolecular structure.
