Dr.Reckeweg R27 Renal Calculi Drop | 22 MLDr. Reckeweg R27 Renal Calculi Drop is ahomoeopathic medicine that relieves ailments related to the kidneys. It helpsease pain and pricking in the back.Key Ingredients: Acid. Nitric., Berberis, Lycopodium, Rubia tinctor, Sarsaparilla.Indications:It is indicated for treating renal calculi, pains in the