Macromolecular naloxone: A novel long-acting polymer-bound drug

Gavril W. Pasternak, Steven C. March, Indu Parikh, Solomon H Snyder, Pedro Cuatrecasas

Research output: Contribution to journalArticle


A widely applicable, prolonged-action drug delivery system has been developed using naloxone, a pure narcotic antagonist, as a model. The drug is attached to an inert, water soluble polymer by reversible covalent bonds, whose slow cleavage releases active drug. Naloxone, attached to a hydrazine-substituted polysaccharide by a hydrazone bond, antagonizes morphine analgesia more than 25 times longer than free naloxone.

Original languageEnglish (US)
Pages (from-to)977-981
Number of pages5
JournalLife Sciences
Issue number9
Publication statusPublished - May 1 1976


ASJC Scopus subject areas

  • Pharmacology

Cite this

Pasternak, G. W., March, S. C., Parikh, I., Snyder, S. H., & Cuatrecasas, P. (1976). Macromolecular naloxone: A novel long-acting polymer-bound drug. Life Sciences, 18(9), 977-981.