Boric Alcohol 4%, 15 ml, Tis Farmaceutic Antiseptic solution, recommended for external use, ideal for washing infected wounds. Local antiseptic. Ingredients: Boric acid, 96% ethyl alcohol, purified water. How to use: Administer 4-5 drops of the solution, previously warmed to body temperature, into the external auditory canal 2-3 times a day. Presentation: 15 ml