From Ignatia amara, also known as Strychnos ignatia, St Ignatius' bean. The homeopathic remedy is made from the seed pods, which contain the powerful poison strychnine. Strychnine acts on the central nervous system.
Ignatia is most effective in children who are bright, precocious and highly strung, and in adults who are alert, nervous, rather pale, given to sighing and yawning, and wear a rather strained expression on their face, often with frequent blinking or a facial tic. Ignatia types are very fragile emotionally, inclined to be perverse and unpredictable. Women who respond well to Ignatia are often artistic.