Comparison of Injection Sclerotherapy Between 5% Phenol in Almond Oil and Aluminum Potassium Sulfate and Tannic Acid for Grade 3 Hemorrhoids.

Purpose Injection sclerotherapy for hemorrhoids has been performed for many years. Currently, 5% phenol in almond oil (PAO) and aluminum potassium sulfate and tannic acid (ALTA) are used as the agents. The purpose of this study was to compare the efficacy of the two agents.