A zinc(II) complex which is lowly toxic, has high insulin-like activity,
and is effectively usable as a hypoglycemic agent for the prevention or
treatment of diabetes; a hypoglycemic agent containing the complex; a
medicinal preparation which contains the complex and is useful as a
preventive/remedy for diabetes; and a food containing the complex, such
as a health food or supplementary health food. The hypoglycemic agent
contains an organic zinc(II) complex having as a ligand a compound
selected among aminoalkylpyridines, bis-optically active amino acids,
bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides,
di-substituted aminocarboxylic acids, .alpha.- and
.beta.-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
