The invention relates to an oral, multiparticulate form of administration, comprising pellets in the size ranging from 50 to 2500 $g(m)m which are substantially constituted of a) an inner matrix layer containing nanoparticles that contain a nucleic acid active ingredient and being embedded in a matrix of a polymer having a mucoadhesive effect, and b) an outer film coating, substantially consisting of an anionic polymer or copolymer that is optionally formulated with pharmaceutically conventional adjuvants, especially emollients.