The invention relates to a co-precipitate comprising a phosphodiesterase-5 inhibitor (PDE-5-inhibitor) and a pharmaceutically compatible copolymer carrier comprising 2 or more different acrylic acid derivatives, a method for production thereof and a medication comprising the co-precipitate according to the invention, a method for producing said medication and the use of said medication for treating an illness wherein the inhibiting of phosphodiesterase-5 is of therapeutic benefit.