Table II.
Composition of mucoadhesive buccal films.
| Formulation | Chitosan, % w/w | HPMC, % w/w | PVA, % w/w | Physical characteristics of film |
|---|---|---|---|---|
| F1 | 99 | 0 | 0 | Stiff and opaque, malleable |
| F2 | 75 | 24 | 0 | Stiff and opaque, malleable |
| F3 | 25 | 74 | 0 | Less stiff and opaque, malleable |
| F4 | 50 | 49 | 0 | Little flexibility but opaque, malleable |
| F5 | 75 | 0 | 24 | Low flexibility translucent, malleable |
| F6 | 50 | 0 | 49 | Low flexibility, translucent, malleable |
| F7 | 25 | 50 | 24 | Soft, flexile, translucent and malleable |
HPMC, hydroxypropyl methylcellulose; PVA, poly(vinyl alcohol).