Drug delivery systems

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Matrices

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424485, 424 7838, 424 7831, 424 7837, 424451, A61K 914

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active

054827191

ABSTRACT:
A photoactivatable drug delivery system is provided, in which a drug is combined e.g. by covalent bonding, incorporation in a matrix or encapsulation, with a photosensitive macromolecule. In combination, the drug is inert. The macromolecule is large enough to prevent migration of the combination within the body, so that the combination can be implanted at a location of maximum effectiveness. The drug is released from the combination, in therapeutically active form, upon appropriate irradiation.

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