It can also be helpful to reduce histamine levels associated with allergies and conditions such as hayfever, asthma, dermatitis, urticaria and psoriasis. Due to its emmenagogue actions, it stimulates blood flow in the pelvic area and uterus, stimulating menstruation in females. As this herb has an anti-inflammatory affect, it can be beneficial in rheumatoid arthritis. Fresh leaves (2 daily) can be chewed or it can be brewed as an infusion as a tea. It is a bitter herb which can be sweetened to be more palatable.