Constipation management (palliative care)

How a palliative care team prevents and treats constipation, which is very common in serious illness and especially when strong pain medicines (opioids) are used.

✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review

In short

Constipation in palliative care is usually caused or worsened by opioid pain medicines, so it is best prevented from the start with a regular laxative.
The goal is comfort, not a set number of bowel movements; doses are adjusted to how you feel and how your bowels respond.
Most people improve with laxatives within a few days; rectal measures (suppositories or enemas) or specialist medicines are added if needed.
Severe tummy pain, vomiting, a swollen abdomen, or new back pain or leg weakness need urgent assessment, as they can signal blockage or spinal cord compression.

A plain-English summary. The detail — including risks and recovery — is below.

At a glance

TypeSymptom management (medicines and bowel care)

AnaestheticNot applicable

How long it takesOngoing; reviewed regularly

Hospital stayUsually no hospital stay; managed at home, in a care home or hospice

Time off workUsually none

When you'll see resultsLaxatives often help within days; bowel care is then kept up to prevent it coming back

On the NHS?Available on the NHS; private palliative input may add speed, choice or a second opinion

A general guide. Your specialist will give you advice for your situation.

Best fit

Relieves cramping, bloating, sickness and the general misery of a backed-up bowel

Pause if

Strong stimulant laxatives and enemas are not suitable if a bowel obstruction is suspected, as they can cause harm; the cause must be assessed first.

Main recovery point

After starting or adjusting a laxative, many people have a bowel movement within one to three days. Your team will ask how it went so they can fine-tune...

Good aftercare

A regular, prescribed laxative plan with clear instructions, not just 'as needed'.

First few days

After starting or adjusting a laxative, many people have a bowel movement within one to three days. Your team will...

If nothing is happening

If there has been no bowel movement after about three days, the team may increase the laxative, add a different...

Ongoing

Once comfortable, a regular laxative is usually continued, especially while you are on opioids, to stop...

When medicines change

If your opioid dose goes up, or new medicines are added, bowel care is reviewed again, as needs change over time.

Medical line illustration of the large bowel and rectum for Constipation management (palliative care). — Illustration only - not a diagnosis, medical advice or a promise of result. Your anatomy and treatment plan may differ. Vuemedics does not publish before-and-after photos.

What is constipation management in palliative care?

Constipation means bowel movements that are harder, less often or more difficult to pass than is normal for you. It is one of the most common problems in serious illness, and it can cause real misery: cramping, bloating, sickness, a poor appetite, restlessness and even confusion.

In palliative care, constipation is very often caused by strong pain medicines called opioids (such as morphine, oxycodone or fentanyl). These slow the bowel down in almost everyone who takes them. Because this is so predictable, the team usually starts a laxative at the same time as the opioid to stop constipation before it begins. Other causes add up too: eating and drinking less, being less active, other medicines, and sometimes the illness itself.

The aim is comfort. Good bowel care is not about reaching a 'normal' number of bowel movements; it is about keeping you comfortable and avoiding the distress and complications of a backed-up bowel. This sits alongside the rest of your care, whatever stage you are at.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

Stimulant laxatives

Such as senna or bisacodyl. They make the bowel wall squeeze to move stool along, which directly counters the slowing effect of opioids. Often a first choice in palliative care.

Osmotic laxatives

Such as macrogol (polyethylene glycol), lactulose or magnesium salts. They draw water into the bowel to soften and bulk the stool, making it easier to pass.

Softener (faecal softening) laxatives

Such as docusate. They help water mix into hard stool. Often combined with a stimulant when stool is hard as well as slow to move.

Rectal measures

Suppositories (such as glycerol or bisacodyl) or enemas, used when oral laxatives are not enough, when there is hard stool low down, or when someone cannot take medicines by mouth.

Peripheral opioid-receptor antagonists

Specialist medicines such as methylnaltrexone, naldemedine or naloxegol that block the opioid's constipating effect on the bowel without undoing its pain relief. Used when ordinary laxatives have not worked well enough.

Common laxative choices at a glance

Type	How it works	Often used when
Stimulant (senna, bisacodyl)	Makes the bowel squeeze	Opioids are slowing the bowel
Osmotic (macrogol, lactulose)	Draws in water to soften stool	Stool is hard or dry
Softener (docusate)	Helps water mix into stool	Combined with a stimulant
Rectal (suppository, enema)	Acts directly in the back passage	Oral laxatives not enough; hard stool low down

Many people need more than one type together. Your team adjusts the mix and dose to your comfort.

Preparing for your treatment

Tell your team what is normal for you: how often you usually go, and what has changed.
Keep a simple note of bowel movements, including how hard or easy they were, so doses can be matched to what is happening.
List all your medicines, as several (including some painkillers, anti-sickness drugs and iron tablets) can add to constipation.
Mention any tummy pain, sickness, bloating or leakage of liquid stool, which can sometimes be a sign of stool backed up higher in the bowel.
Ask whether a laxative should be started now if you are beginning or increasing a strong opioid.
Set up easy, private access to a toilet or commode, and a footstool can help you sit in a better position.
Ask who to contact if things are not improving in a few days, or if you feel unwell.

What happens

Your clinician or nurse will ask about your usual bowel habit, what has changed, your medicines, and how much you are eating, drinking and moving. They will check for warning signs such as severe pain, vomiting or a swollen abdomen.

With your agreement, they may gently examine your tummy and, if appropriate, your back passage, to feel whether there is hard stool low down. This guides whether rectal measures are needed.

Most people are then started on, or switched between, laxatives, with the dose adjusted over the following days. If you are on opioids, a regular laxative is usually built in rather than waiting for problems. If simple laxatives are not enough, the team may add rectal measures or a specialist medicine, and will keep reviewing how you are getting on.

Is this treatment right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

May not be suitable if…

Strong stimulant laxatives and enemas are not suitable if a bowel obstruction is suspected, as they can cause harm; the cause must be assessed first.
Bulk-forming laxatives are often unhelpful for people eating and drinking little, and can worsen symptoms.
Aggressive bowel clear-outs are usually inappropriate very close to the end of life, where gentle comfort measures are preferred.
If new back pain with leg weakness suggests spinal cord compression, this is an emergency and laxatives are not the answer.

Delay or rearrange if…

There is severe tummy pain, vomiting or a swollen abdomen suggesting possible obstruction - assess before giving stimulant laxatives or enemas.
There are signs of spinal cord compression (new back pain with leg weakness, numbness or bladder problems) - seek urgent assessment.
There is heavy diarrhoea or dehydration - the laxative may need lowering, not increasing.
Overflow (liquid stool leaking around hard stool) is suspected - the management differs from ordinary diarrhoea.

Alternatives to discuss

Reviewing and adjusting other medicines that cause constipation, where possible.
Switching or rotating the opioid, which can sometimes reduce the bowel effect.
Non-drug measures: fluids as tolerated, gentle activity, privacy and good toileting position.
Rectal measures or specialist opioid-blocking medicines when oral laxatives are not enough.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

What matters most to me?

Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.

What are all my options?

Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.

What would make me pause?

Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.

What happens if I do nothing today?

For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.

Benefits

Relieves cramping, bloating, sickness and the general misery of a backed-up bowel
Prevents constipation before it starts when begun alongside opioids
Can improve appetite, comfort and even restlessness or confusion that constipation was causing
Reduces the chance of a painful, hard blockage (faecal impaction)
Lets pain medicines continue without the bowel slowing being an unmanaged side effect

Risks & complications

More common

Loose stools, urgency or diarrhoea if the dose is a little too high (usually settles when adjusted)
Tummy cramps or wind, particularly with stimulant laxatives
Bloating with some osmotic laxatives
Needing to try more than one laxative, or a combination, to find what works

Less common

Skin soreness or discomfort from rectal measures
Dehydration if diarrhoea is heavy and fluids are low
Leakage of liquid stool around hard, impacted stool (overflow), which can be mistaken for diarrhoea

Rare but serious

Bowel perforation or serious harm if a strong bowel stimulant or enema is used when there is a blockage that has not been recognised
Salt (electrolyte) disturbances with heavy or prolonged laxative use, especially if you are frail

The most important judgement is to be sure constipation is not actually a bowel obstruction, because strong stimulant laxatives and enemas can be harmful if the bowel is blocked. Tell your team about severe or colicky tummy pain, vomiting, a hard swollen abdomen, or no wind being passed. New back pain with leg weakness or numbness, or difficulty passing urine, needs urgent assessment because it can signal spinal cord compression.

Published figures to discuss

Constipation affects most people taking opioids and is very common in serious illness generally, but published rates vary widely depending on the medicines used, how unwell someone is, and how constipation is defined. Response to laxatives also varies between people, which is why doses are adjusted individually rather than fixed. We have not stated precise percentages here because robust, transferable figures for the palliative population are limited.

Figure	Reported range	How to interpret it	Source / confidence
Opioid-induced constipation	Very common without laxatives	NICE opioid guidance emphasises anticipating constipation and treating it proactively.	NICE CG140 - Palliative care for adults: strong opioids for pain relief (recommendations)nice.org.ukSource-linked context
Bowel obstruction mistaken for simple constipation	Important in advanced cancer	Colicky pain, vomiting, distension or no wind/stool needs urgent clinical review.	Cochrane review - Laxatives or methylnaltrexone for constipation in palliative carencbi.nlm.nih.govSource-linked context
Faecal impaction with overflow diarrhoea	Common in frailty/immobility	Loose stool can paradoxically indicate severe constipation and may need rectal assessment.	Guide sourcesClinical context
Dehydration or electrolyte problems from laxatives	Patient- and dose-dependent	Kidney disease, poor intake and high-dose laxatives need monitoring.	Cochrane review - Laxatives or methylnaltrexone for constipation in palliative carencbi.nlm.nih.govSource-linked context

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

There is no physical recovery as such. Bowel care is about getting comfortable and then keeping it that way, with doses adjusted as your medicines, appetite and activity change.

First few days

After starting or adjusting a laxative, many people have a bowel movement within one to three days. Your team will ask how it went so they can fine-tune the dose.

If nothing is happening

If there has been no bowel movement after about three days, the team may increase the laxative, add a different type, or use a suppository or enema.

Ongoing

Once comfortable, a regular laxative is usually continued, especially while you are on opioids, to stop constipation returning rather than chasing it after it happens.

When medicines change

If your opioid dose goes up, or new medicines are added, bowel care is reviewed again, as needs change over time.

Near the end of life

Goals shift gently towards pure comfort. The team avoids burdensome interventions and focuses on relieving distressing symptoms such as cramping or a feeling of fullness.

What's normal — and not a worry

It can take a couple of days for a laxative to work
Some cramping or wind as the bowel starts moving again
Needing the dose adjusted up or down to get it comfortable
Needing a combination of laxatives rather than just one
Bowel habit changing as appetite, activity and medicines change

Aftercare

Take laxatives regularly as prescribed, not just when constipated, especially while on opioids.
Drink fluids as able and eat what you can manage; do not force high-fibre foods if your appetite is poor, as this can make things worse if you are not drinking enough.
Move gently if you are able, as activity helps the bowel.
Use a comfortable, private toileting routine, and a footstool to raise your knees can make passing stool easier.
Report loose stools or diarrhoea so the dose can be lowered.
Report no bowel movement after about three days, or any tummy pain, sickness or bloating.
Keep a simple bowel record so the team can see the pattern.

Before your treatment

Laxatives collected and a clear routine for taking them
A simple way to record bowel movements
Easy access to a toilet or commode, with privacy
A footstool to improve toileting position
Fluids within easy reach
A named contact for if things do not improve or you feel unwell
Clear instructions on warning signs that need urgent help

⚠ Get urgent help if…

Severe or colicky tummy pain, especially with a hard, swollen abdomen
Vomiting, particularly if it smells faecal, or no wind being passed at all
New back pain with leg weakness, numbness, or difficulty controlling your bladder or bowels (possible spinal cord compression) - seek urgent help
Leakage of liquid stool when you feel constipated (possible overflow around impacted stool)
Sudden confusion, drowsiness or marked restlessness
Signs of dehydration with heavy diarrhoea, such as dizziness or passing very little urine
No bowel movement for several days despite laxatives, with growing discomfort

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your specialist gives you.

Results & realistic expectations

For most people, the right laxative or combination relieves the discomfort of constipation within a few days, and keeping it up prevents it coming back. A good result is not a particular number of bowel movements but feeling comfortable, with less bloating, cramping and sickness.

Managing constipation well also lets pain medicines continue without an unpleasant, untreated side effect, and can lift knock-on problems such as poor appetite or restlessness. It does not change the underlying illness, and the plan usually needs adjusting over time as medicines, eating and activity change.

How long it lasts

Constipation in palliative care tends to be an ongoing issue rather than a one-off, particularly while opioids are being used. That is why a regular laxative is usually continued and reviewed, rather than stopped as soon as things improve. As your situation changes, the type and dose are adjusted to keep you comfortable.

Related tests, treatments or support

Bowel care is managed alongside other symptoms. Anti-sickness medicines may be needed if constipation has caused nausea, and pain relief is balanced against its constipating effect. If you are also being treated for a possible bowel obstruction, the approach is different and laxatives may be changed or stopped, so the two are always considered together.

Follow-up & long-term care

Your team will review how your bowels are responding within a few days of any change, then keep an eye on things as part of ongoing care. Bowel care is revisited whenever your opioid dose changes, new medicines are added, or your eating and activity change. You should be told clearly who to contact between reviews.

Continue a regular laxative while on opioids, rather than waiting for constipation to return.
Keep a simple bowel record so doses can be matched to what is happening.
Review bowel care whenever pain medicines or other drugs change.
Keep fluids up as able, and stay as gently active as you can.
Have a clear plan for what to do if there is no bowel movement after about three days.

Repeat, follow-on and what comes next

Bowel care often needs adjusting more than once to find the right laxative or combination.
Constipation commonly returns if regular laxatives are stopped while opioids continue, so they are usually kept going.
If simple measures repeatedly fail, specialist palliative care advice or a specialist medicine may be needed.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

A regular, prescribed laxative plan with clear instructions, not just 'as needed'.
A named contact and clear guidance on what to do if there is no bowel movement after about three days.
Regular review whenever opioids or other medicines change.
Clear written warning signs for obstruction and spinal cord compression, with an urgent route to help.
Attention to dignity and privacy throughout bowel care.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

How much clinician and specialist nurse time is involved in assessment and review
The type and number of laxatives or specialist medicines used
Whether rectal measures, district nursing visits or extra support are needed
Where care is delivered (home, care home, hospice or hospital)
Whether other symptoms are being managed at the same time

Make sure your written quote includes

The clinician and specialist nurse fees for assessment and ongoing review
Which medicines are included and who prescribes and supplies them
Whether home or district nursing visits are included for rectal measures or support
How follow-up and dose adjustments are arranged and charged
Who to contact out of hours and how that is covered
What happens if symptoms suggest a blockage and urgent assessment is needed

On the NHS? Constipation management is core NHS palliative and primary care, available wherever you are cared for; private input may be used for speed, choice or a second opinion, but the bowel care is the same.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Choosing a specialist safely

Check the specialist is on the GMC Specialist Register for this area.
Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
You're entitled to your total cost in writing — including any follow-up — before you decide.

How Vuemedics verifies every consultant →

Questions to ask your medical professional

Take this to your consultation. A good specialist will welcome every one of these.

Should I start a laxative now that I am on (or increasing) a strong painkiller?
Which laxatives am I taking, and what should I do if there is no bowel movement after a few days?
How will we tell ordinary constipation from a possible blockage, and what signs should worry me?
Could any of my other medicines be making this worse, and can they be changed?
If laxatives are not enough, would a suppository, enema or a specialist medicine be the next step?
Who do I contact if my bowels are not improving or I feel unwell?
Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
Will you be the specialist who carries out my treatment, and who looks after me afterwards?
What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
What does a realistic result look like — and what can this treatment not achieve?
What are my options, including waiting, doing nothing for now, or choosing a different approach?
Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Frequently asked questions

Why do strong painkillers cause constipation?

Opioids such as morphine slow the bowel and make stool harder to pass in almost everyone who takes them. Because it is so predictable, a laxative is usually started at the same time to prevent it.

Will eating more fibre fix it?

Not always, and sometimes it makes things worse. If your appetite is poor and you are not drinking much, extra fibre can sit in the bowel and add to discomfort. Your team will advise what is right for you, but laxatives are usually the mainstay in palliative care.

Is it normal to need more than one laxative?

Yes. Many people need a combination, for example a stimulant to get the bowel moving and a softener or osmotic laxative to soften the stool. The mix is adjusted to your comfort.

How quickly should a laxative work?

Often within one to three days. If there has been no bowel movement after about three days, tell your team so they can increase the dose, change the laxative, or use a suppository or enema.

What if I get diarrhoea?

Loose stools usually mean the dose is a little too high, and your team will lower it. Let them know, especially if it is heavy, so you do not become dehydrated. Occasionally liquid stool leaks around hard stool, which is different and needs assessing.

Can constipation be dangerous?

It is usually a comfort problem, but severe tummy pain, vomiting, a hard swollen abdomen, or new back pain with leg weakness need urgent assessment, as they can signal a blockage or pressure on the spinal cord.

Is this available on the NHS?

Yes. Constipation management is core palliative and primary care on the NHS. Some people see private clinicians for speed, choice or a second opinion, but the bowel care itself is the same.

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: Marie Curie - Constipation in palliative care (for professionals) NICE CG140 - Palliative care for adults: strong opioids for pain relief (recommendations) NICE CG140 - Managing side effects (information for the public) NICE TA651 - Naldemedine for opioid-induced constipation NHS - Constipation Cochrane review - Laxatives or methylnaltrexone for constipation in palliative care

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.