Abstract: A composition for use in treating or preventing a respiratory virus which comprises: (a) at least one water soluble zinc, copper, selenium and/or manganese compound able in aqueous solution to dissociate into zinc, copper selenium and/or manganese ions; (b) at least one water soluble ammonium agent able in aqueous solution to dissociate into ammonium ions (c) at least one acid, and (d) water.

Abstract: An antibacterial formulation which comprises: (a) at least one water soluble copper compound able to form copper ions upon dissolution in an aqueous medium; (b) at least one water soluble ammonium agent able to form ammonium ions upon dissolution in an aqueous medium; (c) at least one water soluble acid, and (d) an aqueous medium within which components (a), (b) and (c) are dissolved, said formulation having (e) an acidic pH and (f) an electrolytic potential in excess of 50 millivolts.

Abstract: A metal-containing composition substantially comprising (i) at least one water soluble metal compound which forms metal ions when dissolved in water, (ii) at least one metal ion modifier as herein defined, (iii) at least one acid, and (iv) water said composition having a pH of less than 6 and an electrolytic potential in excess of 10 millivolts. Such compositions have uses in the prevention and/or treatment of pathogenic disease or disorder, as foodstuff supplements, in the treatment by disinfection of meat and other foodstuffs, in the coating, sealing and plating of metals, and treatment of water and sewage.