Derris Pinnata To purchase Derris Pinnata and other homeopathic remedies online, please click the button above. Remedy info unavailable. Derris Pinnata is available to buy through our online shop from Boiron in USA, Boiron in Canada, 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.