Ligustrum lucidum is a Chinese medicinal herb used to treat poor vision, dizziness, fever, and insomnia, and to increase immune function in cancer patients. In vitro studies suggest it has antioxidant, antitumor, and immune function effects. A few animal studies suggest properties that may have benefits on bone and vision.
Data in humans are quite limited. In a small study of non-small cell lung cancer patients undergoing chemotherapy, a formula containing reishi mushroom and Ligustrum was found to help maintain quality of life (22). Additional studies to confirm efficacy and safety are needed.