Linum Cathar This remedy is not currently available through our online store. Remedy info unavailable. Linum Cathar is available to buy through our online shop from Hylands in USA, by clicking the red 'View Purchase Options' button.. Adding this remedy to your basket will empty all other items, as all items have to be from one supplier. Alternative names, keywords, and common mis-spellings Linum Catharticum, Purging flax