TY - EJOU AU - Nguyen, Thai T. AU - Fallon, Bernard AU - Winfield, Howard N. TI - Spontaneous dissolution of a guaifenesin stone T2 - Canadian Journal of Urology PY - 2005 VL - 12 IS - 4 SN - 1488-5581 AB - Guaifenesin is a commonly used expectorant whose use may lead to the occasional formation of guaifenesin urinary stones. We herein describe a patient who was taking 2400 mg Guaifenesin per day as part of his treatment for asthma. He had a past history of a guaifenesin stone removed ureteroscopically. His current presentation was with a 9 mm by 6 mm stone in the upper left ureter, seen on CT scan, and treated initially with a ureteral stent and hydration. After 3 weeks, the stone had disappeared, as confirmed by repeat CT scan. The genesis and treatment of guaifenesin stones is discussed. KW - urolithiasis KW - kidney stones KW - guaifenesin KW - drug abuse DO -