Black currant (Ribes nigrum) is a shrub that produces edible, purple-black berries that taste sweet and contain a seed. It is native to temperate parts of central and northern Europe and northern Asia, where it prefers damp fertile soils. Black currant seed oil contains a chemical called gamma-linolenic acid (GLA), which might improve immune function and help decrease swelling. Black currant berries contain chemicals called anthocyanins, which have antioxidant effects and can prevent skin aging and wrinkles. Black currants are also high in potassium and GLA, which can help lower blood pressure and reduce inflammation. People use black currant for various conditions, including eczema, gout, high cholesterol, high blood pressure, muscle fatigue, and wound healing, but there is no good scientific evidence to support these uses. Black currants have a strong flavor that many say is an acquired taste, and they can be used in a variety of recipes and dishes, including jams, jellies, syrups, and mixed drinks.