Bluebells synthesise a wide range of chemicals with potential medicinal properties. They contain at least 15 biologically active compounds that may provide them with protection against insects and animals. Certain extracts – water-soluble alkaloids – are similar to compounds tested for use in combating HIV and cancer. The bulbs of bluebells are used in folk medicine as a remedy for leucorrhoea, and as a diuretic or styptic, while the sap can be used as an adhesive.