A method of manufacturing a nicotine containing mucoadhesive film by preparing an aqueous solution at a pH of from 9.5 to 13 said solution comprising (i) a nicotine salt (ii) an alkaline pH regulating agent and (iii) a film forming agent comprising an alginate salt of monovalent cation or a mixture of alginate salts of monovalent cations the film forming agent having a mean guluronate (G) content of from 50 to 85% by weight a mean mannuronate (M) content of from 15 to 50% by weight a mean molecular weight of from 30 000 g/mol to 90 000 g/mol and being such that a 10% aqueous solution thereof at a temperature of 20°C has a viscosity of 100 1000 mPas as measured at a shear rate of 20 rpm by use of a Brookfield viscometer with a spindle No. 2； distributing the solution onto a solid surface； and permitting the solution to dry on said surface. A nicotine containing mucoadhesive film.
