"The leaves contain mucilage, tannin and silic acid[244]. An extract of them has antibacterial properties[240]. They have a bitter flavour and are astringent, demulcent, mildly expectorant, haemostatic and ophthalmic[9, 13, 21, 145, 165, 222, 244, 254]. Internally, they are used in the treatment of a wide range of complaints including diarrhoea, gastritis, peptic ulcers, irritable bowel syndrome, haemorrhage, haemorrhoids, cystitis, bronchitis, catarrh, sinusitis, asthma and hay fever[238, 254]. They are used externally in treating skin inflammations, malignant ulcers, cuts, stings etc[4]. The heated leaves are used as a wet dressing for wounds, swellings etc[213, 222]"
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PFAF References