(Cnicus benedictus) Blessed Thistle is a plant that improves circulation to the brain and strengthens the heart. It has a long history for being used for all lung, liver, and kidney problems. Blessed thistle also is known for helping with female problems, as its eases menstrual cramps and helps with menopausal problems. It also increases mothers milk for breastfeeding. Its used to fight headaches and strengthens the memory by bringing oxygen to the brain.