4 oz. brown glass bottle tincture of Lithospermum ruderale. Puccoon’s inactivation of LH (luteinizing hormone) helps reduce enlarged prostate glands. The formula is a combination of fresh leaf/flower tincture. For prostate care, it is best mixed 1 part to 2 parts Puccoon Root Tincture. Recent Research Documents: Journal of Naturopathic Medicine; Volume 1, Number 1; Inhibition of Endocrine Function by Botanical Agents by Francis Brinker, N.D; Received 12 July 1989, accepted for publication 1 February 1990.