Spray-dried microparticles and their use as therapeutic vehicles

   
   

Microparticles of a water-soluble material, which are smooth and spherical, and at least 90% of which have a mass median particle size of 1 to 10 .mu.m, and which carry a therapeutic or diagnostic agent can successfully be used in dry powder inhalers to deliver the said agent.

Las micropartículas de un material soluble en agua, que son lisas y esféricas, y por lo menos el 90% de que tienen un tamaño de partícula mediano total del mu.m 1 a 10, y que llevan un agente terapéutico o de diagnóstico se puede utilizar con éxito en inhaladores secos del polvo para entregar el agente dicho.

 
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