Roxithromycin capsules are generally not advocated for external application, Roxithromycin capsules are macrolide antibiotics that are generally applied orally and internally to treat inflammation in the body, for example, to effectively control acute and chronic sinusitis. But individual cases, such as for mouth ulcers for external application, should be applied under the guidance of a doctor. Roxithromycin capsules are best taken between meals, that is, the fasting state of the use of absorption will be better, usually taken three times a day, two capsules at a time, but also according to the specific severity of the infection increase or decrease the amount.