The present invention relates to a film comprising an alginate salt of a monovalent cation or a mixture of alginate salts containing at least one alginate salt of a monovalent cation, and a triptan or a pharmaceutically acceptable salt thereof. The present invention further relates to methods for manufacturing such a film, and the use of such a film in the treatment of disease in a human patient, in particular migraine with or without aura, cluster headache, or trigeminal neuralgia.