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Pharmaceutical compositions with controlled release, and a method for their preparation

  • US 5,008,114 A
  • Filed: 11/28/1988
  • Issued: 04/16/1991
  • Est. Priority Date: 04/08/1988
  • Status: Expired due to Fees
First Claim
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1. Pharmaceutical compositions comprising a microporous support having pores of an average diameter of between 5 and 150 nm, a surface area of between 30 and 600 m2 /g, and a particle diameter of less than 200 microns, said microporous support being selected from the group consisting of silica, silicates, zeolites, alumina, activated carbon and a microporous polymer, said microporous support having a pharmaceutically active substance selected from the group consisting of antihypertensive, antiinflammatory, antianxiety, antidepressive, corticosteroids and antibacterial medicaments distributed within the support pores in crystalline form, the crystal dimensions being in the nanometer range.

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