Common Name:  Barberry Causes & Symptoms for (Barberry) Berberis Vulgaris 1x Q Berberis Vulgaris is useful in complaints of Kidney and liver troubles, spleen affections and pains. Berberis helps to reduce both constipation and diarrhoea, and a number of symptoms about the anus. A leading remedy in Lumbago that helps to reduce the pain that extends from the back, round the body and down towards the leg.