One source recommends that it should be avoided during pregnancy. Catarrhal conditions of the upper respiratory tract associated with colds and flus. Goldenseal should be avoided during pregnancy and lactation. Goldenseal is essentially non-toxic at therapeutic doses. Not used in pregnancy.
Ingestion is stated to have produced pruritis over the whole body.
May produce photosensitization. Microcirculatory maldistribution of blood flow. Altered capillary fragility and permeability. Research has shown the beneficial effects of green tea at dosages normally consumed by humans. In high doses, caffeine can cause insomnia, restlessness, and tachycardia.