What are warnings for catnip supplements?

Unsafe when smoked. It is unsafe when smoked or when taken by mouth in hgh doses- such as cups of catnip tea. It can cause headaches, vomiting and a feeling of being ill. It is unsafe to take catnip during pregnancy and breastfeeding because it can stimulate the uterus and potentially cause a miscarriage/ women with heavy menstrual periods can be worsened by catnip.