The following drugs can reduce edema after hemorrhoid surgery, you can first use potassium permanganate for sitz bath treatment or light salt water can also be used, you can take oral treatment under the guidance of the doctor, such as Mai Zhi Ling tablets, roxithromycin dispersible tablets, amoxicillin capsules, these three drugs can, to a certain extent, relieve the edema situation that occurs after surgery. The tablets can effectively prevent and protect against localized edema by providing antioxidants, increasing vascular tone, reducing fluid leakage and decreasing edema congestion. Roxithromycin dispersible tablets have anti-inflammatory and anti-edema effects on a variety of inflammatory conditions, and amoxicillin capsules can be used to treat inflammation as well as edema. Once edema occurs after surgery, it is best to see a doctor and use targeted medication under his or her guidance.