Comfrey
Comfrey is an herb that promotes healing and can relieve pain when suffering from anal fissures. Some clinical research supports the claim that comfrey has wound-healing powers. Research published in the journal Complementary Therapies in Medicine found that comfrey can help heal abrasion wounds.
Add one tablespoon of dried comfrey to one cup of hot water. Allow it to steep for 15 minutes. Strain and let cool. Use the comfrey solution to clean the affected area two times a day. Alternatively, you can use an over-the-counter comfrey ointment on the affected area twice a day.