Introduction: The use of cinnamon in daily life, either as a cooking ingredient or as herbal therapy, is unknown and there has been no previous research on the efficacy of cinnamon extract as a renoprotector. This studi aims to determine the efficacy of the ethanolic extract of cinnamon bark (Cinnamomum burmannii) whether it can act as a renoprotector in lowering urea levels in the kidney. Meth…