Written and medically reviewed by: Assoc. Prof. Cengiz Dibekoğlu, MD, General SurgeryLast updated:
Anal Fissure Medical Treatment
Soft stools, sitz baths, nitroglycerin and diltiazem creams — before Botox or LIS
First goals: keep stools soft, ease pain, and relax the internal sphincter so the tear can regain blood flow. Many acute fissures heal with 4–8 weeks of consistent medical care. Cream plus diet is not “mild fluff” — done well, it prevents surgery for many patients.
Educational schematic. Some structures may be simplified or emphasized for clarity; not an exact anatomical depiction.
© Cengiz Dibekoğlu — illustrative; not for unauthorized use
Figure summary
This educational figure shows: Medical treatment.
Key points
Diet and stool softening
Daily fiber and plenty of water are foundational. Psyllium or prescribed softeners are added when needed. Aim for soft, formed stool without straining. Excess diarrhea also irritates the tear — balance matters.
- Fiber + fluids
- Softeners when needed
- No straining · short toilet time
- Regular meals and walking
Warm sitz baths
Two to three times daily for 10–15 minutes in warm (not scalding) water. Baths ease spasm, help hygiene, and calm pain — especially after stooling. Pat dry gently; avoid perfume, alcohol wipes, and scrubbing. Baths complement cream; they do not replace it.
Nitroglycerin (NTG) ointment
Low-dose topical NTG (often around 0.2%) relaxes the internal sphincter via nitric oxide and improves blood flow to the tear. Healing rates in series are often roughly 50–70%. Headache is the most common side effect; dose change or another cream may be needed. Pregnancy and some heart medicines require clinician clearance.
Diltiazem cream
Topical diltiazem (commonly 2% formulations) also relaxes sphincter tone. Healing is in a similar band to NTG; headache is usually less. Many centers use it first-line or as an NTG alternative. Regular application matters.
If medical care fails
Chronic or resistant fissures move to Botox and, when needed, LIS — already covered in dedicated chapters. Soft-stool habits continue even after procedures to cut recurrence.
Frequently asked questions
How long should I try creams?
Often 4–8 weeks of consistent use with soft stools. Persistent chronic signs or failed prior care lead to Botox/LIS discussion sooner.
Headache on NTG — what next?
Tell your clinician. Dose adjustment or switching to diltiazem is common.
More chapters in this hub
Anal Fissure Symptoms
Glass-shard pain, bleeding, and when to seek care
Anal Fissure Diagnosis
Exam, acute vs chronic, and important differentials
Diet for Anal Fissure
Diet — explained for shared decision-making
Botox for Anal Fissure
Botox: what the procedure aims to do and who it fits
Lateral Internal Sphincterotomy
LIS: what the procedure aims to do and who it fits
Appointment / info
This page is for education. It is not medical advice and does not replace a visit with your physician.
Medical editor: Assoc. Prof. Cengiz Dibekoğlu, MD · Last medically reviewed: August 2026 · English patient-education chapter.