Where do we find studies of this drug ? In Hahnemann's Materia Medica Pura, British Journal of Homoeopathy , Vol. IX. How do we make the tincture ? The fresh blooming herb tops of the hemp of both male and female herb, are treated in the same manner as Gelsemium . What are the principal characteristics of this variety of hemp ? Urethritis, with purulent discharge, great burning and tenderness on urinating ; glands penis dark red and swollen ; there may be chordee ; there is also a spasmodic contraction of the sphincter vesicae on urinating. How do three symptoms differ from those of Cantharis ? Cantharis has more tenesmus. Cannabis sat . has more burning and smarting. Give symptoms indicating Copaiva in urethritis. Burning in the neck of bladder and urethra ; catarrh of bladder with great dysuria following gonorrhoea ; there is swelling of the orifice of the urethra and constant desire to urinate ; urine smells of violets, especially in gonorrhoea ; discharge yellow, purulent and corrosive ; haematuria. How does Cubeba compare here ? Cubeba has cutting and constriction after micturition ; urinates every ten or fifteen minutes, with smarting tenesmus and ropy mucus ; useful in inflamed prostate.