Goji Berry, also called Wolfberry, is the fruit of either Lycium barbarum or Lycium chinense, two closely related species of boxthorn in the nightshade family, Solanaceae. Both species are native to Asia, and have been long used in traditional Asian cuisine. The fruits are similar but can be distinguished by small but significant differences in taste, sugar content, and content of the aminoacid betaine. The fruit has also been an ingredient in traditional Chinese, Korean, Vietnamese, and Japanese medicine, since at least the 3rd century CE. The plant parts are called by the Latin names lycii fructus (fruit), herba lycii (leaves), etc., in modern official pharmacopeias.
Since about 2000, Goji Berry and derived products became common in the West as health foods or alternative medicine remedies extending from exaggerated and unproven claims about their health benefits, such as diabetes, high blood pressure, fever, and age-related eye problems.
Goji Berries can be eaten raw, cooked, or dried (like raisins) and used in herbal teas, juices, wines, and medicines.