Enhanced in vitro transbuccal drug delivery of ondansetron HCl

Longsheng Hu, Bassam B. Damaj, Richard Martin, Bozena B. Michniak-Kohn

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


The effect of chemical enhancers and iontophoresis on the in vitro transbuccal delivery of 0.5% ondansetron HCl (ODAN HCl) was investigated using porcine buccal tissue. The chemical enhancers used were dodecyl 2-(N,N-dimethyl amino) propionate (DDAIP), its HCl salt dodecyl-2-(N,N-dimethylamino) propionate hydrochloride (DDAIP HCl), N-(4-bromobenzoyl)-S,S-dimethyliminosulfurane (Br-iminosulfurane), and azone. This study demonstrated that anodal iontophoresis at 0.1, 0.2 and 0.3 mA current intensity significantly increased transbuccal delivery of ODAN HCl 3.3-fold, 5.2-fold and 7.1-fold respectively, compared to control. DDAIP HCl provided significantly higher transbuccal delivery of ODAN HCl than did DDAIP, azone and Br-iminosulfurane. It was found that DDAIP HCl in water significantly enhanced drug permeability (920 μg/cm2) compared to DDAIP HCl in propylene glycol (PG) (490 μg/cm2) during 24 h. It was also found that 5% (w/v) DDAIP HCl in water alone provided higher permeation flux (29.3 μg/cm2/h) than iontophoresis alone at 0.3 mA (22.8 μg/cm2/h) during the same 8 h treatment. A light microscopy study showed that treatment with chemical enhancers and iontophoresis did not cause major morphological changes in the buccal tissue. EpiOral™ MTS cytotoxicity studies demonstrated that DDAIP HCl at less than 5% (w/v) in water did not have significant detrimental effects on the cells.

Original languageEnglish (US)
Pages (from-to)66-74
Number of pages9
JournalInternational Journal of Pharmaceutics
Issue number1-2
StatePublished - Feb 14 2011

All Science Journal Classification (ASJC) codes

  • Pharmaceutical Science


  • Chemical enhancer
  • Cytotoxicity
  • Histology
  • Iontophoresis
  • Ondansetron hydrochloride
  • Transbuccal drug delivery


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