Abstract: Disclosed is a pharmaceutical nitazoxanide composition comprising: (a) an immediate release fraction comprising nitazoxanide non-coated granules or non-granulated powder, and (b) a pH-dependent release fraction comprising granules of nitazoxanide coated with one or more polymers having a pH-dependent solubility.

Abstract: The invention relates to a synergic pharmaceutical composition of mebendazole (MBDZ) with nitazoxanide (NTZX) for the treatment of human parasitosis, which significantly increases the spectrum of MBDZ against protozoa and reinforces the anthelmintic action of NTZX. Furthermore, when said pharmaceutical combination of MBDZ and NTZX is used, the same effects of the individual active substances are maintained in the systemic action of the active metabolite of NTZX, tizoxanide, and in the treatment of some systemic forms of parasitosis. In addition, the synergic pharmaceutical combination of MBDZ with NTZX achieves a larger anti-parasite spectrum, while maintaining the efficiency and safety profiles of both active substances independently. All of these effects enable the differentiation of the pharmaceutical combination from the rest of the conventional anti-parasite treatments that have more limited spectra.

Abstract: Disclosed is a pharmaceutical nitazoxanide composition comprising: (a) an immediate release fraction comprising nitazoxanide non-coated granules or non-granulated powder, and (b) a pH-dependent release fraction comprising granules of nitazoxanide coated with one or more polymers having a pH-dependent solubility.

Abstract: The present invention relates to a pulsed-release sildenafil pharmaceutical composition comprising an immediate release fraction containing from 5 to 100 mg of sildenafil and a controlled release fraction containing from 25 to 150 mg of sildenafil, wherein the controlled release fraction is comprised of particles containing (a) a superdisintegrant agent (b) a coating comprising at least one pH-dependent solubility polymer and at least one pH-independent solubility polymer and (c) optionally, other pharmaceutical excipients. The composition of the present invention exhibits a faster dissolution profile in alkaline media than in acid media, which allows for obtaining enhanced pulsed-release formulations.