Anal Fissure: What's going on with your fissure right now?

Commonly suggested options include clove Essential Oil, l-arginine, sitz Bath, partially hydrolyzed guar gum, aloe Vera Topical and centella asiatica.

Anal Fissure: What kind of help would you rather start with?

Commonly suggested options include l-arginine, centella asiatica, magnesium Citrate, partially hydrolyzed guar gum, fiber Deficiency and psyllium.

Why does it burn hours later and not just when I go?

The ring of muscle around the anus tightens after a tear is touched. That squeeze is a spasm, and it can last for hours. The tight muscle also cuts blood flow to the sore spot, which keeps the ache going. This is the classic pattern for an anal fissure.

How do I know if it is a tear or piles?

A tear gives a sharp, cutting pain the moment stool passes. Then it burns for a long time after. Piles feel more full, achy, and itchy, and you can often feel a soft lump. Only an exam can tell for sure, and you can have both at once.

Should I take fiber if my stool is already loose?

Yes, in many cases. Psyllium (evidence grade A, traditional tier T3) soaks up water and can firm up loose stool. It helps hard stool too, which is why it is used both ways. Start with a small dose and drink plenty of water.

Do sitz baths really do anything?

A Sitz Bath (evidence grade C, traditional tier T3) is a warm, shallow soak for the bottom. The warmth helps the tight muscle let go, which eases the burn. The C grade means the research is mixed or thin. Most people find it soothing and low risk, but it will not fix the tear on its own.

Can I put clove oil down there?

Clove Essential Oil (evidence grade insufficient, traditional tier T2) has long folk use for pain. That is traditional use, not proof from trials. Strong oils can sting or burn torn skin badly. Never use it straight, and ask a pharmacist before you try it.

Can spicy food cause this?

Yes. Hot peppers pass through the gut and touch the skin on the way out. That gives a hot feeling with no cut and no blood. If you only burn the day after spicy meals, food is the likely cause.

Why does it hurt so much when the tear is so small?

The skin just inside the anus is packed with nerve endings. It is built to sense what is there. So a split no bigger than a paper cut can send a strong pain signal. Size does not match the pain here.

Will it heal on its own?

Many fresh tears do heal in two to six weeks once stool is soft. The key is to stop straining and stop hard stool. If the pain is the same after six weeks, see a doctor. Long-term tears often need a prescription cream or a small procedure.

Burning down there hours after pooping

You went to the bathroom a while ago. Now there is a hot, raw sting down there. It can last for hours after you leave the toilet.

The most common cause is a small tear in the skin of the anus. Doctors call this an anal fissure. The tear stings when stool passes, and then the sore spot keeps burning.

The tear is often tiny, even when the pain is big. Many people are shocked that something so small can hurt so much.

When to see someone

Most small tears heal in a few weeks. See a doctor if the burning is still there after six weeks. Also go if it goes away and keeps coming back.

Go the same day if you have a fever with the pain. Go if you see pus.

Go if there is a hot, sore lump that is getting bigger. That can be an abscess, and it needs care fast.

Go to the emergency room for heavy bleeding. Go if you feel faint, dizzy, or very weak. Go if your stool is black and tarry.

Call your doctor if you lose weight and do not know why. Call if you pass blood or slime for more than a week. Call if your bowel habits change and stay that way.

Book a visit if you are over 45 and have new bleeding. Book one if a sore down there has not healed in a month. Book one if you have sharp pain with no cut and no clear cause.

Also see a doctor if the pain is so bad that you hold back from going. Holding back makes stool harder. Hard stool tears the skin again.

Why it happens

The skin just inside the anus has a lot of nerve endings. It is built to tell you what is there. That is why a small split hurts so much.

When stool tears that skin, the ring of muscle around it clamps down. This tight squeeze is a spasm. The spasm is what keeps the burn going long after you are done.

The tight muscle also cuts down blood flow to the spot. Less blood flow means the tear heals slowly. So the next hard stool splits it open again, and the cycle repeats.

Hard, dry stool is the usual trigger. Straining, days of loose stool, and childbirth can also tear the skin.

What else it could be

Burning down there is not always a fissure. Here is how the common causes feel different.

Anal fissure: a sharp, cutting pain while you go, then a deep burn or ache for minutes to hours. Often a streak of bright red blood on the paper. The pain is worst right after a bowel movement.

Piles (hemorrhoids): more of a full, achy, itchy feeling than a knife-like cut. There may be a soft lump you can feel. A hemorrhoid with a clot in it hurts a lot, but the lump is easy to feel and shows up fast.

Skin irritation: burning that is worse when you sweat or wipe, not tied to the moment you pass stool. Wet wipes, scented soap, and hard scrubbing are common triggers. The skin may look red, shiny, or cracked all around, not in one line.

Yeast or fungus: itching more than pain, plus a red rash with a clear edge. It is worse in warm, damp weather and after antibiotics.

Diarrhea burn: raw, stinging skin after many loose stools. Acid and enzymes in loose stool strip the skin. This fades in a day or two once stools firm up.

Spicy food: a hot feeling with no cut and no blood. Peppers pass through and touch the skin on the way out.

Abscess (pocket of pus): a steady, deep throb that does not let up between bowel movements. There may be fever, swelling, or a hot lump. This one needs care right away.

Proctitis: burning plus a strong, urgent need to go, often with slime or blood. It can come from bowel disease or from an infection. It tends to last for weeks and does not track with hard stools.

Pinworms: itching that is worst at night, more in kids. If it is mostly itch and mostly after dark, think of this.

If your pain starts the moment stool passes and peaks right after, a fissure is the best guess.

How to read the grades below

The options below come from our page on Anal Fissure. Each one carries two labels.

The first label is the evidence grade. A means strong trials in people, B means smaller or mixed studies, and C means early or limited findings. D means lab work only, and “insufficient” means the research cannot settle it yet.

The second label is the traditional tier. T3 means long use in more than one tradition, T2 means long use in one, and T1 means known use. T0 means no such record.

These grades come from research on Anal Fissure, the parent Health Topic, not on burning down there hours after pooping.

A grade tells you how strong the research is, not how well something will work for you. Talk to a doctor or pharmacist before you start anything, above all if you take other medicines.

What to try first

The main goal is soft, easy stool. Hard stool tears the skin again and keeps the burn going.

Psyllium (evidence grade A, traditional tier T3) has the strongest research here. It pulls water into stool so it passes without force. Start with a small dose, mix it in a full glass of water, and drink more water through the day.

Partially hydrolyzed guar gum (evidence grade B, traditional tier T0) is another fiber. It is a clear powder that mixes into drinks. Some people find it causes less gas and bloating than other fibers.

Magnesium Citrate (evidence grade B, traditional tier T0) draws water into the bowel. It works faster than fiber. Too much causes cramps and loose stool, which can also burn, so go low and slow.

A Sitz Bath (evidence grade C, traditional tier T3) is a warm, shallow soak for the bottom. The warmth helps the tight ring of muscle let go. Many people soak for 10 to 15 minutes after a bowel movement.

Aloe Vera Topical (evidence grade B, traditional tier T3) is used on the skin to calm the sore spot. A plain gel with no alcohol and no scent is one option.

L-arginine (evidence grade B, traditional tier T0) is looked at because the body turns it into a gas that relaxes blood vessels. That is the same idea behind some prescription creams for fissures. Talk to your doctor before you try it, and do not swap it for a drug they gave you.

Centella asiatica (evidence grade insufficient, traditional tier T0) is used on the skin for wound care. The research is not strong enough yet to say how well it works here.

Clove Essential Oil (evidence grade insufficient, traditional tier T2) has a long history of folk use for pain. That is traditional use, not trial proof. Strong oils can burn torn skin, so never put it on straight, and ask a pharmacist first.

Simple habits help too. Do not sit and strain on the toilet. Go when you feel the urge.

Pat dry with soft paper or a damp cloth instead of scrubbing. Skip scented wipes and harsh soap.

How long it takes

A fresh tear often feels better within a few days once stool is soft. The skin itself usually takes two to six weeks to close.

Fiber works on a slower clock. Give psyllium or guar gum a few days to change your stool, and a week or two to make bowel movements easy. Magnesium citrate acts faster, often within a day.

A sitz bath can ease the ache within minutes, but that is short-term relief. The tear still needs soft stool to heal.

If the burn is the same after six weeks, the tear may have turned long-term. Long-term tears often need a doctor's cream or a small procedure.

Anal Fissure: natural remedies and the evidence behind them

11 options · 3 graded B · 3 graded C · 5 traditional or ungraded

What's going on with your fissure right now?

A tight, clenched, spasming feeling that lingers after I go - like the muscle won't let it heal

Clove Essential Oil
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Diluted topical cream that helped chronic fissures close
Why it may be relevant
If your tear keeps re-opening and will not finish healing, this is one of the few natural topicals that has been tested in a randomized trial specifically for closing chronic anal fissures.
Why try it
In a randomized trial of 55 people with chronic anal fissure, a cream containing just 1% clove oil healed 60% of fissures within 3 months, versus 12% with stool softeners plus a numbing cream. It also lowered resting anal-sphincter pressure. Eugenol, clove oil's main compound, appears to relax the sphincter and improve local blood flow, which supports healing.
Dose or use
Use only a properly diluted preparation - the trial used a 1% clove oil cream - applied to the anal margin up to 3 times daily for about 6 weeks. Never apply undiluted clove essential oil to this area.
Time to results
In the trial, healing was assessed from 6 weeks out to 3 months.
Key study
RCT (2007, PMID 17573751): Clove oil cream: a new effective treatment for chronic anal fissure - a single-blind randomized trial in 55 patients where 1% clove oil cream healed 60% of chronic fissures at 3 months versus 12% with stool softeners plus lignocaine cream, and lowered resting anal-sphincter pressure.
Caution
Undiluted clove oil can burn or irritate skin - use only a low-concentration (about 1%) cream formulated for topical use, and stop if irritation worsens. For external use only; keep away from broken skin elsewhere and out of reach of children.
L-arginine
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Relaxes internal anal sphincter pressure
Why it may be relevant
If muscle tension is your main barrier to healing, L-arginine targets exactly that mechanism.
Why try it
In a randomized, double-blind, placebo-controlled trial of 76 adults with chronic anal fissure, one month of oral L-arginine reduced pain, bleeding and fissure size more than placebo and improved quality of life. It is thought to work by boosting nitric oxide, which relaxes the internal anal sphincter and improves blood flow to the fissure site.
Dose or use
In the clinical trial, adults took a 1000 mg capsule three times daily for one month; follow product labeling and check with a healthcare practitioner before starting.
Time to results
The trial showed measurable improvement by one month, with further gains at three-month follow-up.
Key study
RCT (2023, PMID 36449096): L-Arginine is a feasible supplement to heal chronic anal fissure via reducing internal anal sphincter pressure: a randomized clinical trial study.
Caution
May interact with blood pressure medications and nitrates; avoid if pregnant without medical guidance.
Sitz Bath
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)
Warm soaks ease pain and spasm
Why it may be relevant
If sharp pain or burning after bathroom trips is your main complaint, a warm sitz bath is the simplest way to calm the area and get soothing relief.
Why try it
A randomized controlled trial in people recovering from surgery (sphincterotomy) for chronic anal fissure found that warm-water sitz baths reduced pain and discomfort. Warm soaking is also long-standing standard advice for anal fissures. Warm water is thought to relax the internal sphincter and increase local blood flow, which is why it tends to feel better.
Dose or use
Sit in warm (not hot) shallow water for 10-15 minutes, 2-3 times daily and after bowel movements.
Time to results
Soothing relief is often felt right away.
Key study
RCT (2007, PMID 17534541): in patients recovering from anal sphincterotomy for chronic fissure, warm-water sitz baths improved post-procedure symptoms and pain; the trial studied symptom relief, not fissure healing on its own.
Caution
Keep water comfortably warm, not scalding; dry the area gently afterward to prevent moisture-related irritation.

It's been weeks - it bleeds, keeps re-opening, and just won't finish healing

Clove Essential Oil
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Diluted topical cream that helped chronic fissures close
Why it may be relevant
If your tear keeps re-opening and will not finish healing, this is one of the few natural topicals that has been tested in a randomized trial specifically for closing chronic anal fissures.
Why try it
In a randomized trial of 55 people with chronic anal fissure, a cream containing just 1% clove oil healed 60% of fissures within 3 months, versus 12% with stool softeners plus a numbing cream. It also lowered resting anal-sphincter pressure. Eugenol, clove oil's main compound, appears to relax the sphincter and improve local blood flow, which supports healing.
Dose or use
Use only a properly diluted preparation - the trial used a 1% clove oil cream - applied to the anal margin up to 3 times daily for about 6 weeks. Never apply undiluted clove essential oil to this area.
Time to results
In the trial, healing was assessed from 6 weeks out to 3 months.
Key study
RCT (2007, PMID 17573751): Clove oil cream: a new effective treatment for chronic anal fissure - a single-blind randomized trial in 55 patients where 1% clove oil cream healed 60% of chronic fissures at 3 months versus 12% with stool softeners plus lignocaine cream, and lowered resting anal-sphincter pressure.
Caution
Undiluted clove oil can burn or irritate skin - use only a low-concentration (about 1%) cream formulated for topical use, and stop if irritation worsens. For external use only; keep away from broken skin elsewhere and out of reach of children.
Partially hydrolyzed guar gum
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Softens stools to reduce re-injury
Why it may be relevant
If hard or irregular stools are preventing healing, this soluble fiber directly addresses that root cause.
Why try it
In a randomized trial of people whose chronic anal fissure had just healed, taking partially hydrolyzed guar gum for 10 months roughly halved the recurrence rate compared with no maintenance fiber. As a gentle soluble fiber it softens stools and improves regularity, so each bowel movement does less damage to healing tissue.
Dose or use
Follow product labeling; consult a healthcare practitioner.
Time to results
Typically 2–4 weeks
Key study
RCT (2014, PMID 25089280): in 165 patients whose chronic anal fissure had healed with topical GTN, 10 months of partially hydrolyzed guar gum maintenance improved 12-month success (58.5% vs 38.3%) and roughly halved recurrence (14.5% vs 30.2%).
Caution
Drink plenty of water when taking fiber supplements; start at a low dose to minimize gas or bloating.
Aloe Vera Topical
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · Traditional use not yet assessed)
Soothes pain and calms the tear
Why it may be relevant
If pain and burning are your main issue, a soothing topical applied right at the tear can take the edge off and calm the irritated skin.
Why try it
A prospective double-blind clinical trial applied aloe vera cream to chronic anal fissures and reported less pain, less bleeding on defecation, and better wound healing.
Dose or use
Apply a thin layer of aloe vera cream or gel to the anal margin 2-3 times daily, including after bowel movements. For external use.
Time to results
Some soothing within days; healing over several weeks.
Key study
Clinical trial (2014, PMID 24763890): Effects of Aloe vera cream on chronic anal fissure pain, wound healing and hemorrhaging upon defecation - a prospective double-blind clinical trial.
Caution
For external application only; stop if you notice increased irritation or an allergic skin reaction.
Centella asiatica
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)
Supports tissue repair, not stool softness
Why it may be relevant
This one works on the tissue-repair side of healing rather than on your stools. Use it alongside the fiber and stool-softening options in this list: they reduce the re-tearing at each bowel movement while Centella supports closing the tear itself.
Why try it
A single randomized trial compared Centella asiatica against flavonoids with no placebo group, so how much it helps on its own is uncertain. In traditional herbal use it is believed to support collagen formation and connective-tissue repair.
Dose or use
Standardized Centella asiatica extract, roughly 60-120 mg twice daily, or per product labeling; consult a healthcare practitioner.
Time to results
Typically 4-8 weeks
Key study
RCT (2018, PMID 29844250): compared Centella asiatica with flavonoids for chronic anal fissure with no placebo control, so it shows relative rather than placebo-verified benefit.
Caution
Consult a healthcare practitioner if pregnant or taking anticoagulant medications.
Zinc Deficiency
Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use
Low zinc can stall wound healing
Why it may be relevant
If your tear has stayed open for weeks or keeps coming back, it is essentially a wound that is not healing - and low zinc is a checkable reason healing can stall.
Why try it
A fissure that will not close is, in effect, a wound that is failing to heal. Zinc is a key mineral for skin and tissue repair, and low zinc is associated with delayed wound healing - worth checking if your tear has stayed open for weeks.
Dose or use
Zinc is found in meat, shellfish, seeds, nuts and legumes; if you suspect a shortfall, ask a clinician before starting a supplement rather than dosing high on your own.
Time to results
If low zinc was a factor, tissue repair may improve over several weeks of correction.
Key study
Educational: zinc is required for normal wound healing and its deficiency is linked to delayed healing; this is background guidance, not a controlled anal-fissure trial.
Caution
Do not take high-dose zinc long term without guidance - it can cause nausea and lower your copper levels.

My stools are hard or irregular, and every bowel movement re-opens the tear

Partially hydrolyzed guar gum
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Softens stools to reduce re-injury
Why it may be relevant
If hard or irregular stools are preventing healing, this soluble fiber directly addresses that root cause.
Why try it
In a randomized trial of people whose chronic anal fissure had just healed, taking partially hydrolyzed guar gum for 10 months roughly halved the recurrence rate compared with no maintenance fiber. As a gentle soluble fiber it softens stools and improves regularity, so each bowel movement does less damage to healing tissue.
Dose or use
Follow product labeling; consult a healthcare practitioner.
Time to results
Typically 2–4 weeks
Key study
RCT (2014, PMID 25089280): in 165 patients whose chronic anal fissure had healed with topical GTN, 10 months of partially hydrolyzed guar gum maintenance improved 12-month success (58.5% vs 38.3%) and roughly halved recurrence (14.5% vs 30.2%).
Caution
Drink plenty of water when taking fiber supplements; start at a low dose to minimize gas or bloating.
Fiber Deficiency
Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use
Low fiber drives the hard stools that tear
Why it may be relevant
If your stools are hard and irregular, low dietary fiber may be the root cause; raising it addresses the fissure at its source rather than just the symptoms.
Why try it
Not getting enough dietary fiber is a recognized cause of the hard, hard-to-pass stools that create and re-open anal fissures. Checking and building up your fiber intake tackles the problem at its root.
Dose or use
Aim to build toward roughly 25-35 g of fiber a day from vegetables, fruit, legumes and whole grains, increasing gradually and with plenty of water.
Time to results
Stools typically ease within one to two weeks of consistently higher fiber.
Key study
Educational: low dietary fiber is a recognized driver of constipation and hard stools; this is background nutrition guidance, not a controlled trial for anal fissure.
Caution
Increase fiber slowly and drink more water to avoid gas, bloating or, paradoxically, harder stools.
Magnesium Citrate
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Osmotic softener for stubbornly hard stools
Why it may be relevant
If your stools stay hard even with more fiber, magnesium citrate is a different lever - it draws water into the stool to soften it so bowel movements re-tear the fissure less.
Why try it
Magnesium citrate works as a gentle osmotic laxative, drawing water into the stool. When stools stay hard despite more fiber, softening them this way helps stop the fissure being re-torn at each bowel movement.
Dose or use
Use the lowest effective amount per product labeling, taken with water; best for short-term help while you sort out fiber and fluids.
Time to results
Usually works within 6-24 hours; use short-term, not indefinitely.
Key study
Commonly used as a gentle osmotic laxative for constipation; no specific controlled anal-fissure trial is cited here.
Caution
Can cause loose stools, cramping or, in excess, dehydration; avoid if you have kidney problems without medical advice.
Psyllium
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Softens and bulks stool to stop re-tearing
Why it may be relevant
If hard or irregular stools keep re-injuring the fissure, psyllium directly softens and regularizes them so each bowel movement does less damage.
Why try it
Psyllium is a bulk-forming soluble fiber that softens and regularizes stool. Keeping stools soft and easy to pass is the main way to stop a fissure being re-opened at each bowel movement.
Dose or use
Start with about 1 teaspoon (roughly 5 g) in a full glass of water once daily, increasing gradually; always take with plenty of fluid.
Time to results
Stools usually soften within a few days to two weeks.
Key study
Bulk-forming fiber such as psyllium is a standard first-line conservative measure for anal fissure; no specific controlled trial is cited here, so it is presented on the basis of established clinical practice rather than a verified citation.
Caution
Take with plenty of water to avoid choking or blockage; increase the dose slowly to limit gas and bloating.
ST25 (Tianshu) - Stomach 25
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Acupressure point for bowel regularity
Why it may be relevant
If hard or irregular stools are the problem, this abdominal point is traditionally used to encourage more regular, easier bowel movements.
Why try it
ST25 is a traditional acupressure point on the abdomen used to regulate bowel movements and ease constipation. Easing constipation can reduce the straining and hard stools that keep a fissure from healing. This is traditional practice, not a verified clinical finding for fissures.
Dose or use
Find the point about two finger-widths to either side of the navel; press gently with a fingertip for 1-2 minutes while breathing slowly. Repeat daily.
Time to results
Varies; some notice easier movements within days of regular practice.
Key study
Traditionally used to support bowel regularity; this specific use for anal fissure has not been confirmed in controlled clinical trials.
Caution
Use light, comfortable pressure; avoid firm abdominal pressure if you are pregnant or have abdominal pain of unknown cause.

The sharp pain and burning during and after bathroom trips - I need relief first

Aloe Vera Topical
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · Traditional use not yet assessed)
Soothes pain and calms the tear
Why it may be relevant
If pain and burning are your main issue, a soothing topical applied right at the tear can take the edge off and calm the irritated skin.
Why try it
A prospective double-blind clinical trial applied aloe vera cream to chronic anal fissures and reported less pain, less bleeding on defecation, and better wound healing.
Dose or use
Apply a thin layer of aloe vera cream or gel to the anal margin 2-3 times daily, including after bowel movements. For external use.
Time to results
Some soothing within days; healing over several weeks.
Key study
Clinical trial (2014, PMID 24763890): Effects of Aloe vera cream on chronic anal fissure pain, wound healing and hemorrhaging upon defecation - a prospective double-blind clinical trial.
Caution
For external application only; stop if you notice increased irritation or an allergic skin reaction.
Sitz Bath
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)
Warm soaks ease pain and spasm
Why it may be relevant
If sharp pain or burning after bathroom trips is your main complaint, a warm sitz bath is the simplest way to calm the area and get soothing relief.
Why try it
A randomized controlled trial in people recovering from surgery (sphincterotomy) for chronic anal fissure found that warm-water sitz baths reduced pain and discomfort. Warm soaking is also long-standing standard advice for anal fissures. Warm water is thought to relax the internal sphincter and increase local blood flow, which is why it tends to feel better.
Dose or use
Sit in warm (not hot) shallow water for 10-15 minutes, 2-3 times daily and after bowel movements.
Time to results
Soothing relief is often felt right away.
Key study
RCT (2007, PMID 17534541): in patients recovering from anal sphincterotomy for chronic fissure, warm-water sitz baths improved post-procedure symptoms and pain; the trial studied symptom relief, not fissure healing on its own.
Caution
Keep water comfortably warm, not scalding; dry the area gently afterward to prevent moisture-related irritation.

What kind of help would you rather start with?

A supplement I take by mouth to relax the muscle, soften stools, or support repair

L-arginine
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Relaxes internal anal sphincter pressure
Why it may be relevant
If muscle tension is your main barrier to healing, L-arginine targets exactly that mechanism.
Why try it
In a randomized, double-blind, placebo-controlled trial of 76 adults with chronic anal fissure, one month of oral L-arginine reduced pain, bleeding and fissure size more than placebo and improved quality of life. It is thought to work by boosting nitric oxide, which relaxes the internal anal sphincter and improves blood flow to the fissure site.
Dose or use
In the clinical trial, adults took a 1000 mg capsule three times daily for one month; follow product labeling and check with a healthcare practitioner before starting.
Time to results
The trial showed measurable improvement by one month, with further gains at three-month follow-up.
Key study
RCT (2023, PMID 36449096): L-Arginine is a feasible supplement to heal chronic anal fissure via reducing internal anal sphincter pressure: a randomized clinical trial study.
Caution
May interact with blood pressure medications and nitrates; avoid if pregnant without medical guidance.
Centella asiatica
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)
Supports tissue repair, not stool softness
Why it may be relevant
This one works on the tissue-repair side of healing rather than on your stools. Use it alongside the fiber and stool-softening options in this list: they reduce the re-tearing at each bowel movement while Centella supports closing the tear itself.
Why try it
A single randomized trial compared Centella asiatica against flavonoids with no placebo group, so how much it helps on its own is uncertain. In traditional herbal use it is believed to support collagen formation and connective-tissue repair.
Dose or use
Standardized Centella asiatica extract, roughly 60-120 mg twice daily, or per product labeling; consult a healthcare practitioner.
Time to results
Typically 4-8 weeks
Key study
RCT (2018, PMID 29844250): compared Centella asiatica with flavonoids for chronic anal fissure with no placebo control, so it shows relative rather than placebo-verified benefit.
Caution
Consult a healthcare practitioner if pregnant or taking anticoagulant medications.
Magnesium Citrate
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Osmotic softener for stubbornly hard stools
Why it may be relevant
If your stools stay hard even with more fiber, magnesium citrate is a different lever - it draws water into the stool to soften it so bowel movements re-tear the fissure less.
Why try it
Magnesium citrate works as a gentle osmotic laxative, drawing water into the stool. When stools stay hard despite more fiber, softening them this way helps stop the fissure being re-torn at each bowel movement.
Dose or use
Use the lowest effective amount per product labeling, taken with water; best for short-term help while you sort out fiber and fluids.
Time to results
Usually works within 6-24 hours; use short-term, not indefinitely.
Key study
Commonly used as a gentle osmotic laxative for constipation; no specific controlled anal-fissure trial is cited here.
Caution
Can cause loose stools, cramping or, in excess, dehydration; avoid if you have kidney problems without medical advice.

Fixing the root cause with food, fiber, and nutrients so it stops coming back

Partially hydrolyzed guar gum
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Softens stools to reduce re-injury
Why it may be relevant
If hard or irregular stools are preventing healing, this soluble fiber directly addresses that root cause.
Why try it
In a randomized trial of people whose chronic anal fissure had just healed, taking partially hydrolyzed guar gum for 10 months roughly halved the recurrence rate compared with no maintenance fiber. As a gentle soluble fiber it softens stools and improves regularity, so each bowel movement does less damage to healing tissue.
Dose or use
Follow product labeling; consult a healthcare practitioner.
Time to results
Typically 2–4 weeks
Key study
RCT (2014, PMID 25089280): in 165 patients whose chronic anal fissure had healed with topical GTN, 10 months of partially hydrolyzed guar gum maintenance improved 12-month success (58.5% vs 38.3%) and roughly halved recurrence (14.5% vs 30.2%).
Caution
Drink plenty of water when taking fiber supplements; start at a low dose to minimize gas or bloating.
Fiber Deficiency
Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use
Low fiber drives the hard stools that tear
Why it may be relevant
If your stools are hard and irregular, low dietary fiber may be the root cause; raising it addresses the fissure at its source rather than just the symptoms.
Why try it
Not getting enough dietary fiber is a recognized cause of the hard, hard-to-pass stools that create and re-open anal fissures. Checking and building up your fiber intake tackles the problem at its root.
Dose or use
Aim to build toward roughly 25-35 g of fiber a day from vegetables, fruit, legumes and whole grains, increasing gradually and with plenty of water.
Time to results
Stools typically ease within one to two weeks of consistently higher fiber.
Key study
Educational: low dietary fiber is a recognized driver of constipation and hard stools; this is background nutrition guidance, not a controlled trial for anal fissure.
Caution
Increase fiber slowly and drink more water to avoid gas, bloating or, paradoxically, harder stools.
Psyllium
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Softens and bulks stool to stop re-tearing
Why it may be relevant
If hard or irregular stools keep re-injuring the fissure, psyllium directly softens and regularizes them so each bowel movement does less damage.
Why try it
Psyllium is a bulk-forming soluble fiber that softens and regularizes stool. Keeping stools soft and easy to pass is the main way to stop a fissure being re-opened at each bowel movement.
Dose or use
Start with about 1 teaspoon (roughly 5 g) in a full glass of water once daily, increasing gradually; always take with plenty of fluid.
Time to results
Stools usually soften within a few days to two weeks.
Key study
Bulk-forming fiber such as psyllium is a standard first-line conservative measure for anal fissure; no specific controlled trial is cited here, so it is presented on the basis of established clinical practice rather than a verified citation.
Caution
Take with plenty of water to avoid choking or blockage; increase the dose slowly to limit gas and bloating.
Zinc Deficiency
Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use
Low zinc can stall wound healing
Why it may be relevant
If your tear has stayed open for weeks or keeps coming back, it is essentially a wound that is not healing - and low zinc is a checkable reason healing can stall.
Why try it
A fissure that will not close is, in effect, a wound that is failing to heal. Zinc is a key mineral for skin and tissue repair, and low zinc is associated with delayed wound healing - worth checking if your tear has stayed open for weeks.
Dose or use
Zinc is found in meat, shellfish, seeds, nuts and legumes; if you suspect a shortfall, ask a clinician before starting a supplement rather than dosing high on your own.
Time to results
If low zinc was a factor, tissue repair may improve over several weeks of correction.
Key study
Educational: zinc is required for normal wound healing and its deficiency is linked to delayed healing; this is background guidance, not a controlled anal-fissure trial.
Caution
Do not take high-dose zinc long term without guidance - it can cause nausea and lower your copper levels.

Something soothing I apply directly to the tear to calm it and help it close

Clove Essential Oil
Supported by smaller clinical studies (Evidence grade B · No traditional record)
Diluted topical cream that helped chronic fissures close
Why it may be relevant
If your tear keeps re-opening and will not finish healing, this is one of the few natural topicals that has been tested in a randomized trial specifically for closing chronic anal fissures.
Why try it
In a randomized trial of 55 people with chronic anal fissure, a cream containing just 1% clove oil healed 60% of fissures within 3 months, versus 12% with stool softeners plus a numbing cream. It also lowered resting anal-sphincter pressure. Eugenol, clove oil's main compound, appears to relax the sphincter and improve local blood flow, which supports healing.
Dose or use
Use only a properly diluted preparation - the trial used a 1% clove oil cream - applied to the anal margin up to 3 times daily for about 6 weeks. Never apply undiluted clove essential oil to this area.
Time to results
In the trial, healing was assessed from 6 weeks out to 3 months.
Key study
RCT (2007, PMID 17573751): Clove oil cream: a new effective treatment for chronic anal fissure - a single-blind randomized trial in 55 patients where 1% clove oil cream healed 60% of chronic fissures at 3 months versus 12% with stool softeners plus lignocaine cream, and lowered resting anal-sphincter pressure.
Caution
Undiluted clove oil can burn or irritate skin - use only a low-concentration (about 1%) cream formulated for topical use, and stop if irritation worsens. For external use only; keep away from broken skin elsewhere and out of reach of children.
Aloe Vera Topical
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · Traditional use not yet assessed)
Soothes pain and calms the tear
Why it may be relevant
If pain and burning are your main issue, a soothing topical applied right at the tear can take the edge off and calm the irritated skin.
Why try it
A prospective double-blind clinical trial applied aloe vera cream to chronic anal fissures and reported less pain, less bleeding on defecation, and better wound healing.
Dose or use
Apply a thin layer of aloe vera cream or gel to the anal margin 2-3 times daily, including after bowel movements. For external use.
Time to results
Some soothing within days; healing over several weeks.
Key study
Clinical trial (2014, PMID 24763890): Effects of Aloe vera cream on chronic anal fissure pain, wound healing and hemorrhaging upon defecation - a prospective double-blind clinical trial.
Caution
For external application only; stop if you notice increased irritation or an allergic skin reaction.

Simple drug-free rituals I can do at home, like warm soaks and acupressure

Sitz Bath
Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)
Warm soaks ease pain and spasm
Why it may be relevant
If sharp pain or burning after bathroom trips is your main complaint, a warm sitz bath is the simplest way to calm the area and get soothing relief.
Why try it
A randomized controlled trial in people recovering from surgery (sphincterotomy) for chronic anal fissure found that warm-water sitz baths reduced pain and discomfort. Warm soaking is also long-standing standard advice for anal fissures. Warm water is thought to relax the internal sphincter and increase local blood flow, which is why it tends to feel better.
Dose or use
Sit in warm (not hot) shallow water for 10-15 minutes, 2-3 times daily and after bowel movements.
Time to results
Soothing relief is often felt right away.
Key study
RCT (2007, PMID 17534541): in patients recovering from anal sphincterotomy for chronic fissure, warm-water sitz baths improved post-procedure symptoms and pain; the trial studied symptom relief, not fissure healing on its own.
Caution
Keep water comfortably warm, not scalding; dry the area gently afterward to prevent moisture-related irritation.
ST25 (Tianshu) - Stomach 25
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Acupressure point for bowel regularity
Why it may be relevant
If hard or irregular stools are the problem, this abdominal point is traditionally used to encourage more regular, easier bowel movements.
Why try it
ST25 is a traditional acupressure point on the abdomen used to regulate bowel movements and ease constipation. Easing constipation can reduce the straining and hard stools that keep a fissure from healing. This is traditional practice, not a verified clinical finding for fissures.
Dose or use
Find the point about two finger-widths to either side of the navel; press gently with a fingertip for 1-2 minutes while breathing slowly. Repeat daily.
Time to results
Varies; some notice easier movements within days of regular practice.
Key study
Traditionally used to support bowel regularity; this specific use for anal fissure has not been confirmed in controlled clinical trials.
Caution
Use light, comfortable pressure; avoid firm abdominal pressure if you are pregnant or have abdominal pain of unknown cause.

Evidence grades describe the strength of published research for Anal Fissure, not a promise of results. Nothing here is medical advice — talk to your clinician before starting anything, especially alongside prescription medication.