Modified biomolecule as potential vehicle for buccal delivery of doxepin.

Flavia Laffleur, Martina Zilio, Duangratana Shuwisitkul

Therapeutic delivery 2016 Oct

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Doxepin is a traditional tricyclic antidepressant with analgesic and anesthetic properties when applied topically to the mucosa. Doxepin is one approach in treating insomnia and depression in Parkinson's disease. Patients with Parkinson's disease suffer difficulties in swallowing. Therefore, it was the aim of this study to develop a buccal-adhesive delivery system. Pectin was modified with cysteine. Stability assays in form of disintegration assay according to the Ph.Eur were performed. Furthermore, bioadhesiveness on buccal mucosa was investigated incorporating the drug doxepin. The adhesiveness was improved 1.4-fold and revealed a sustained release over 3 h. Taking these findings into account, the modifications render this designed excipient fruitful for buccal delivery.

Citation

Flavia Laffleur, Martina Zilio, Duangratana Shuwisitkul. Modified biomolecule as potential vehicle for buccal delivery of doxepin. Therapeutic delivery. 2016 Oct;7(10):683-689