Method for producing a particulate pharmaceutical composition, comprising: a) dissolving or dispersing a block copolymer unit having a hydrophobic polymer chain segment derived from a polyamino acid chain and a water soluble hydrophilic polymer chain segment composed of polyethylene glycol, and a lipid charged in a formation solution containing an organic solvent; b) remove the organic solvent by evaporation to form a solid or paste; c) combining the solid or paste with water or with an aqueous solution containing an additive with stirring to disperse the block copolymer unit and the charged lipid; d) further dispersing or spraying the resulting product by a method selected from ultrasound radiation, high pressure emulsification or extrusion to form a carrier composition; and e) carry out a freezing operation; wherein a drug is introduced that includes at least one biomachromolecule selected from the group consisting of a protein and a nucleic acid, adding the drug to the formation solution between steps a) and b) or adding the carrier composition to a solution of the drug between stages d) and e), in which the charged lipid carries a charge opposite to the drug load.Método para producir una composición farmacéutica particulada, que comprende: a) disolver o dispersar una unidad de copolímero de bloque que tiene un segmento de cadena polimérica hidrófobo derivado de una cadena de poliaminoácido y un segmento de cadena polimérica hidrófilo soluble en agua compuesto por polietilenglicol, y un lípido cargado en una disolución de formación que contiene un disolvente orgánico; b) eliminar el disolvente orgánico mediante evaporación para formar un sólido o una pasta; c) combinar el sólido o la pasta con agua o con una disolución acuosa que contiene un aditivo con agitación para dispersar la unidad de copolímero de bloque y el lípido cargado; d) dispersar o pulverizar adicionalmente el producto resultante mediante un método seleccionado de radiación por ultrasonidos, emulsi