Initially developed in 1970s, Oral thin films (OTF) are thin, flexible films for drug delivery. They are placed on or under the tongue, where they then dissolve. Transmucosal films are absorbed by the body directly via the oral mucosa. The excellent blood supply to the oral mucosa means the active substance enters the bloodstream immediately.

Gathering attention in mid 2000s by medical professionals world wide, OTFs have revolutionized drug administration. Its multiple advantages over conventional dosage forms has put OTFs in a superior status.