An apparatus and method including herbal, amino acid, vitamin and mineral formulations for correcting and curing erectile dysfunction in men in order to create a natural erection. 5 to 30 parts by weight of a acrylic ester polymer or a polymer mixture obtained by polymerizing from 0 to 50 parts by weight of a monomer mixture in the presence of a polymer latex which is obtained by emulsion-polymerizing from 50 to 100 parts by weight of a monomer mixture wherein, when 0. The retaining wall, the concrete blocks used to construct the retaining wall, and a method of constructing a retaining wall using these blocks comprise the system disclosed herein.