Hydrangea arborescens MT is a remedy for gravel, profuse deposit of white amorphous salts in urine. It acts on the ureters. It is used in calculus, renal colic, and bloody urine. Pain in lumbar region. Dizziness; oppression of chest. It covers frequent urination, enlarged prostrate, burning pain in urethra and sharp pain in loins. It is useful in uricacidaemia (an excess of uric acid in the blood), when there are severe pains in the back and the urine contains an excess of solids, also an irritation of the bladder of an acute character. Reference 1. W. Boericke, New Manual of Homoeopathic Materia Medica & Repertory [with Relationship of Remedies], Second Re-Augmented & Revised Edition Based on Ninth Edition, Reprint Edition 2002, B. Jain Publishers, New Delhi. 2. Dr. P. N. Varma, et al., A Compendium of Rare and Clinically Established Mother Tinctures, 4th Edition, Dr. Willmar Schwabe India Pvt. Ltd., A-36, Sector 60, Noida.