Cydonia Vulgaris To purchase Cydonia Vulgaris and other homeopathic remedies online, please click the button above. Remedy info unavailable. Cydonia Vulgaris is available to buy through our online shop from Boiron in USA, Boiron in Canada, by clicking the red 'View Purchase Options' button. Alternative names, keywords, and common mis-spellings Cydonia Oblonga, Quince