Bryophyllum Pinnatum Tea as a Novel Treatment for Recurrent Kidney Stone Formers

Inclusion Criteria: * 18-70 years of age at time of study enrollment * 1 calcium-based stone event within a 3-year interval and/or hypercalciuria on a 24h urine collection (\>5 mmol/day) * They had an ultrasound or CT imaging within the previous 6 months which showed no evidence of current obstructive kidney stone * Adhering to the stone prevention diet (high water/low salt/low protein intake) for at least one month prior to enrollment in study but not taking any stone-preventing medications * Agrees to maintain current lifestyle habits and avoid taking new supplements during the study period Exclusion Criteria: * Patients with secondary causes for calcium stone formation (primary hyperparathyroidism, inflammatory bowel disease, hyperuricosuria, and cancer) * Patients who are pregnant or nursing or who are trying to become pregnant * Currently consuming B. pinnatum or any natural health product containing polyphenols * A known intolerance or allergy to the plant B. pinnatum * Currently taking stone-preventing medication * Gluten intolerance or allergy