by mouth, can cause severe liver injury.
This is one of the clearest examples of why “herbal” does not always mean safe. Comfrey tea, capsules, or internal use should be avoided unless specifically advised by a qualified healthcare professional.
9. Turmeric or Curcumin Supplements
Turmeric used as a spice in food is generally different from concentrated curcumin supplements. In recent years, turmeric and curcumin supplements have been linked to rare cases of liver injury. Australia’s Therapeutic Goods Administration warns that medicines and herbal supplements containing turmeric or curcumin may cause
