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Sumatriptan succinate transdermal delivery systems for the treatment of migraine

✍ Scribed by C. Balaguer-Fernández; A. Femenía-Font; S. del Rio-Sancho; V. Merino; A. López-Castellano

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
147 KB
Volume
97
Category
Article
ISSN
0022-3549

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✦ Synopsis

We have successfully obtained sumatriptan transdermal systems with different polymer compositions: methyl cellulose (MC), polyvinyl pyrrolidone (PVP) and a polyvinyl pyrrolidone (PVP)-polyvinyl alcohol (PVA) mixture. The systems contained 1,2-propylenglycol (MC) or sorbitol as a plasticizer (PVP and PVP-PVA), methacrylate copolymer as an adhesive agent, and an occlusive liner. Azone (5%, w/w) was incorporated into all the systems as a percutaneous enhancer. Transdermal systems are thin, transparent and non-adhesive when in a dry state. The permeation of sumatriptan succinate across pig ear skin was studied using the systems prepared. The formulation with MC polymer produced a statistically significant increment with respect to the PVP and PVP-PVA formulations (p < 0.05). Azone incorporation into the systems produced an increment in the sumatriptan flux values of all three transdermal systems with respect to those of the controls (p < 0.05). In addition, the application of iontophoresis to the wet methyl cellulose-Azone formulation produced a much higher increase of sumatriptan transdermal flux.

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