Tailoring controlled-release oral dosage forms by combining inkjet and flexographic printing techniques

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

  • Genina, Natalja
  • Daniela Fors
  • Hossein Vakili
  • Petri Ihalainen
  • Leena Pohjala
  • Henrik Ehlers
  • Ivan Kassamakov
  • Edward Haeggström
  • Pia Vuorela
  • Jouko Peltonen
  • Niklas Sandler
We combined conventional inkjet printing technology with flexographic printing to fabricate drug delivery systems with accurate doses and tailored drug release. Riboflavin sodium phosphate (RSP) and propranolol hydrochloride (PH) were used as water-soluble model drugs. Three different paper substrates: A (uncoated woodfree paper), B (triple-coated inkjet paper) and C (double-coated sheet fed offset paper) were used as porous model carriers for drug delivery. Active pharmaceutical ingredient (API) containing solutions were printed onto 1 cm × 1 cm substrate areas using an inkjet printer. The printed APIs were coated with water insoluble polymeric films of different thickness using flexographic printing. All substrates were characterized with respect to wettability, surface roughness, air permeability, and cell toxicity. In addition, content uniformity and release profiles of the produced solid dosage forms before and after coating were studied. The substrates were nontoxic for the human cell line assayed. Substrate B was smoothest and least porous. The properties of substrates B and C were similar, whereas those of substrate A differed significantly from those of B, C. The release kinetics of both printed APIs was slowest from substrate B before and after coating with the water insoluble polymer film, following by substrate C, whereas substrate A showed the fastest release. The release rate decreased with increasing polymer coating film thickness. The printed solid dosage forms showed excellent content uniformity. So, combining the two printing technologies allowed fabricating controlled-release oral dosage forms that are challenging to produce using a single technique. The approach opens up new perspectives in the manufacture of flexible doses and tailored drug-delivery systems. © 2012 Elsevier B.V. All rights reserved.
OriginalsprogEngelsk
TidsskriftEuropean Journal of Pharmaceutical Sciences
Sider (fra-til)615-623
Antal sider9
ISSN0928-0987
DOI
StatusUdgivet - 2012

ID: 145539921