**6. Methods of preparation**

Solvent casting and hot melt extrusion are the two most common methods for making oral films. However, several new advancements and novel ways have developed in recent years. Semisolid casting and solid-dispersion extrusion are two versions of these industrial technologies of casting and extrusion that have been defined and utilised alone or in combination. **Figure 1** showing innovative manufacturing processes, such as rolling and printing, are also discussed.
