The latest and most concentrated of leech oils, the Ibu Lani Premium Leech oil is the only formulation to combine leech with Butea Superba. Butea Superba has been used for generations to improve manhood in the Lanna tradition. The Ibu Lani leech is made with only 4 natural ingredients, nothing more. No additives, no synthetics. An authentic leech oil will enlarge the veins and strengthen the connective tissues of the penis. Veins enlargement can be observed. Why is it called ‘premium’? It is labelled premium because of the high quality of ingredients used, as well as the large concentration of these ingredients.