Sepsis treatment (Sepsis management)

What sepsis is, why it is a medical emergency, how it is treated urgently in hospital, and the red-flag signs that mean you should call 999.

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

In short

Sepsis is a life-threatening emergency caused by the body's overwhelming response to an infection — early treatment saves lives.
In hospital, people assessed as being at high risk of sepsis get urgent senior review and antibiotics into a vein within one hour; other treatments, such as fluids and oxygen, are added when they are clinically needed.
Red-flag signs in the community — such as slurred speech, severe breathlessness or mottled skin — mean call 999.
Recovery can be slow, with weakness, tiredness and low mood for weeks or months (post-sepsis effects).

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

At a glance

TypeEmergency treatment of life-threatening infection

AnaestheticNot needed for sepsis treatment itself; some treatments may need sedation

How long it takesTreatment starts within the first hour; recovery takes days to months

Hospital stayInpatient — often on a ward, HDU or intensive care depending on severity

Time off workRecovery is often slow and can take weeks to months

When you'll see resultsThe first few hours are critical; recovery is then reviewed daily

On the NHS?Treated urgently by the NHS, usually as a 999 or A&E emergency

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

Best fit

Early antibiotics and fluids can stop sepsis from worsening and save lives

Pause if

Sepsis treatment is for a life-threatening response to infection; not every infection is sepsis, and mild infections do not need this urgent approach.

Main recovery point

The critical window: antibiotics, fluids, oxygen and tests are given urgently. The team watches blood pressure, oxygen and urine output very closely.

Good aftercare

Clear written information on the sepsis red-flag signs and when to call 999.

First hours

The critical window: antibiotics, fluids, oxygen and tests are given urgently. The team watches blood pressure...

First days in hospital

As antibiotics take effect, the infection comes under control. Drips and oxygen are reduced; antibiotics may be...

First weeks

Weakness, tiredness, poor appetite and low mood are common. Building up strength, eating and moving takes time...

First months

Many people continue to feel tired or low and may have poor concentration, memory gaps or repeated minor...

Medical line illustration of intensive care and critical care support for Sepsis treatment. — 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 sepsis and how is it treated?

Sepsis is a life-threatening emergency that happens when the body's response to an infection becomes overwhelming and starts to harm its own tissues and organs. It can follow any infection — a chest, urine, skin, tummy or wound infection — and can affect anyone, though babies, older people, pregnant and recently pregnant women, and people with weak immune systems are at higher risk.

Sepsis is a medical emergency, like a heart attack. The earlier it is treated, the better the chances, which is why hospitals act fast. If sepsis is not treated quickly, blood pressure can fall dangerously (septic shock) and organs such as the kidneys, lungs and heart can start to fail.

In hospital, suspected sepsis is assessed using a national pathway (NICE guidance) chosen for the person's age and, where relevant, whether they are pregnant or have recently been pregnant. People assessed as being at high risk need urgent senior review and antibiotics into a vein within one hour. Other steps — oxygen, fluids into a vein, blood tests, blood cultures (to find the germ), monitoring urine output and moving to a higher level of care — are used when they are clinically needed. Not every person with suspected sepsis needs exactly the same set of treatments. Sicker people may need treatment in a high-dependency unit or intensive care, with support for breathing, blood pressure or the kidneys.

Most importantly for families and the public: in the community, certain warning signs mean you should call 999 or go straight to A&E and ask, 'Could this be sepsis?' Early action saves lives.

Types, options & approaches

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

Sepsis

A life-threatening reaction to infection that begins to affect how the organs work. It needs urgent treatment, usually in hospital.

Septic shock

The most severe form, where blood pressure drops dangerously despite fluids. It needs intensive care with medicines to support blood pressure.

The 'Sepsis Six'

A checklist of urgent actions — such as giving oxygen, taking blood cultures and other tests, giving antibiotics and fluids into a vein, and checking a lactate level and urine output. It is used mainly for people assessed as being at high risk, and the exact steps are tailored to each person rather than being identical for everyone.

Source control

Treating the source of the infection — for example draining an abscess, removing an infected line, or surgery — alongside antibiotics.

When to get help for a possible infection

Situation	What to do
Mild infection, feeling generally OK	Self-care; pharmacist or GP advice
Getting worse, but no red flags	Call NHS 111 (England, Scotland, Wales) or your GP urgently; in Northern Ireland use GP out-of-hours or your Trust's Phone First service
Any sepsis red flag (see warning signs)	Call 999 or go to A&E now
A child who is very unwell or hard to wake	Call 999 — trust your instincts

If you are worried that you or someone else might have sepsis, ask the health professional directly: 'Could it be sepsis?'

Preparing for your treatment

Sepsis is an emergency, so there is no time to prepare — the most useful thing is to know the red-flag signs and act fast.
If you are calling 999 or going to A&E, mention any recent infection, operation, or that you are worried about sepsis.
Tell the team about allergies (especially to antibiotics), regular medicines, and any weakened immune system.
Mention if you are pregnant or have given birth in the last six weeks, as this raises the risk.
Bring a list of medicines and any recent hospital or antibiotic treatment if you can, but do not delay getting help to do so.
For families: choose one main contact for hospital updates if a relative is admitted to critical care.

What happens

If sepsis is suspected, the hospital team acts quickly. They first assess how ill the person is, using a national pathway (NICE guidance) chosen for their age and, where relevant, pregnancy or recent pregnancy. People assessed as being at high risk are seen urgently by a senior clinician and given antibiotics into a vein within one hour. Depending on what the assessment shows, the team may also give oxygen, take blood tests including blood cultures (to find the germ causing the infection) and a lactate level (which shows how stressed the body is), give fluids into a vein to support blood pressure, and measure how much urine is being passed. These steps are used when they are clinically needed rather than automatically for everyone.

The team also looks for the source of the infection, with examinations, scans or other tests, and treats it — for example draining an abscess or removing an infected line. Antibiotics may be changed once tests show which germ is responsible and which antibiotic works best.

How ill someone is decides where they are looked after. Many people are treated on a ward and improve with antibiotics and fluids. Those who are more unwell — for example with a very low blood pressure or failing organs — may need a high-dependency unit or intensive care, with support for breathing, blood pressure or the kidneys.

Recovery is then reviewed every day. As the infection comes under control, support is gradually reduced, antibiotics are often switched from a drip to tablets, and the person is helped to recover their strength.

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…

Sepsis treatment is for a life-threatening response to infection; not every infection is sepsis, and mild infections do not need this urgent approach.
Antibiotics do not help infections caused by viruses, though sepsis can follow some viral illnesses and still needs urgent assessment.
For a person who is dying of an advanced, untreatable illness, aggressive sepsis treatment may add distress, and comfort-focused care may be kinder — decided with the person and family.
The wrong antibiotic can be unhelpful, which is why blood cultures and tests guide treatment.

Delay or rearrange if…

Sepsis treatment should never be delayed — speed is the single most important factor in survival.
If you suspect sepsis in the community, do not wait to see if things improve; call 999.
Tests should not hold up the first dose of antibiotics in a very unwell patient.
Where someone has a clear, agreed plan to focus on comfort, the team will follow that rather than escalate.

Alternatives to discuss

For milder infections, antibiotics by mouth at home or under GP care, without emergency treatment.
Treating the source directly — for example draining an abscess or removing an infected line — alongside antibiotics.
Supportive care at home for self-limiting viral infections, with safety-netting advice on red flags.
Comfort-focused or palliative care where sepsis occurs in someone with an advanced, untreatable illness and that is their wish.

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

Early antibiotics and fluids can stop sepsis from worsening and save lives
Finding and treating the source of infection helps recovery
Close monitoring catches a falling blood pressure or organ problems early
Intensive care can support breathing, blood pressure and kidneys through the worst
Most people who are treated early go on to recover

Risks & complications

More common

Side effects of antibiotics, such as diarrhoea, nausea or thrush
Tiredness, weakness and poor appetite during and after the illness
Bruising and soreness from drips, blood tests and lines
Disturbed sleep and some confusion (delirium), especially if very unwell

Less common

An allergic reaction to an antibiotic
Needing high-dependency or intensive care, with support for organs
Blood clots in the legs or lungs from being unwell and less active
Slow recovery of kidney or lung function after a severe episode

Rare but serious

Lasting damage to organs such as the kidneys
Tissue or limb damage from very poor circulation in severe septic shock
Despite urgent treatment, severe sepsis can be fatal — which is why speed matters

The greatest risk in sepsis is delay, because the illness can worsen quickly — this is why hospitals treat it as an emergency and why knowing the red-flag signs matters. Antibiotics themselves can cause side effects and reactions, so the team will ask about allergies. Many survivors have a long recovery with weakness and low mood, sometimes called post-sepsis syndrome.

Published figures to discuss

Outcomes in sepsis depend heavily on how quickly it is recognised and treated, how severe it is (sepsis versus septic shock), the source of infection, and the person's age and health beforehand. Because of this, no single survival or complication figure applies to everyone, and quoting one could mislead. What is well established is that earlier treatment improves the chances, and that severe sepsis and septic shock are more dangerous than milder sepsis. After-effects on strength, mood and concentration are common and recognised.

Figure	Reported range	How to interpret it	Source / confidence
Mortality in sepsis	Substantial; UK summaries often quote around 20% overall, higher in septic shock	Risk depends on source, age, frailty, lactate, blood pressure and organ failures.	NHS — Sepsisnhs.ukPublished figure
Septic shock mortality	High; commonly around 30 to 50% in ICU cohorts	Persistent low blood pressure needing vasopressors and raised lactate are markers of high risk.	NHS — Sepsisnhs.ukPublished figure
Delay to effective antibiotics when bacterial sepsis is likely	Associated with worse outcomes in high-risk sepsis	Cultures should be taken when possible, but treatment should not be dangerously delayed in shock or high-risk presentations.	NHS — Sepsisnhs.ukSource-linked context
Over-treatment when sepsis is incorrectly suspected	Common enough to require daily review	Antimicrobial stewardship means reassessing diagnosis, cultures and duration once the patient is stabilised.	Guide sourcesClinical 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

Recovery from sepsis can take much longer than people expect — often weeks or months, not days. Surviving the emergency is the first step; rebuilding strength and energy takes time and patience.

First hours

The critical window: antibiotics, fluids, oxygen and tests are given urgently. The team watches blood pressure, oxygen and urine output very closely.

First days in hospital

As antibiotics take effect, the infection comes under control. Drips and oxygen are reduced; antibiotics may be switched from a drip to tablets. Sicker patients may be in HDU or intensive care.

First weeks

Weakness, tiredness, poor appetite and low mood are common. Building up strength, eating and moving takes time, often with physiotherapy.

First months

Many people continue to feel tired or low and may have poor concentration, memory gaps or repeated minor infections. This 'post-sepsis' recovery is common and recognised.

Longer term

Most people recover well, though some have lasting effects, especially after severe sepsis or intensive care. Recovery often continues to improve over many months.

What's normal — and not a worry

Feeling very weak and tired, sometimes for weeks or months
Poor appetite and some weight loss that slowly recovers
Low mood, anxiety, poor sleep or vivid memories after a severe episode
Poor concentration or a feeling of 'brain fog'
Being more prone to minor infections for a while as you recover

Aftercare

Finish the full course of antibiotics exactly as prescribed, even once you feel better.
Expect recovery to be gradual; rest when you need to and build activity up slowly.
Eat well and stay hydrated to help your body recover.
Look out for low mood, anxiety or distressing memories, and tell your GP if they persist.
Watch for any return of infection or sepsis red flags, and seek help early.
Keep follow-up appointments and ask your GP about a recovery check after a severe episode.
If you were in intensive care, ask whether a critical care follow-up clinic is available.

Before your treatment

Know the sepsis red-flag signs and when to call 999
Antibiotics list and finish date noted
Allergy information recorded, especially any antibiotic reaction
One main family contact saved if a relative is in critical care
GP follow-up arranged after a severe episode
Support lined up at home for the early weeks of recovery
Question for the team: what was the source of the infection, and is it fully treated?

⚠ Get urgent help if…

CALL 999 or go to A&E and ask 'Could it be sepsis?' if an adult has any of: slurred speech or confusion; extreme shivering or muscle pain; passing no urine in a day; severe breathlessness; a feeling of 'I'm going to die'; or skin that is mottled, pale or discoloured.
CALL 999 for a child who is breathing very fast, has a fit (convulsion), looks mottled, bluish or pale, has a rash that does not fade when pressed, is very lethargic or hard to wake, or feels abnormally cold.
For a baby or child under 5, also seek urgent help if they are not feeding, are vomiting repeatedly, or have not passed urine for 12 hours.
Trust your instincts — if you feel someone is seriously unwell or getting rapidly worse, do not wait.
If an infection is getting worse but there are no red-flag signs yet, get urgent non-life-threatening advice: use NHS 111 in England, Scotland or Wales, or call your GP. In Northern Ireland, contact your GP out-of-hours service or your HSC Trust's Phone First service.
After recovering, seek help promptly for any new infection, as people can be more vulnerable for a while.

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

A good result is that early antibiotics, fluids and treatment of the source bring the infection under control before it causes lasting harm, and the person recovers and leaves hospital. Treated early, most people survive sepsis.

Sepsis is serious and can still be fatal despite the best care, especially when it is severe or recognised late — which is why fast action matters so much. Even after a good recovery, many people feel weak and tired for some time. The team's day-by-day view is the most useful guide to how someone is doing.

How long it lasts

Most people who recover from sepsis do not have lasting organ damage, though recovery of energy and strength can take many months. After severe sepsis or septic shock, some people have longer-lasting effects on the kidneys, lungs, mood or memory. Having had sepsis once does not usually mean it will happen again, but treating infections promptly remains important.

Related tests, treatments or support

Sepsis treatment combines antibiotics and fluids with treating the source of infection (such as draining an abscess or surgery) and, for sicker patients, the organ support described in the intensive care and high-dependency guides — including a breathing machine, blood-pressure medicines or kidney filtering. These work together to support the body while the infection is brought under control.

Follow-up & long-term care

Follow-up depends on how severe the illness was. Many people recover with a GP review, while those who were in critical care may be offered a follow-up clinic. The team will also check that the source of infection is fully treated and arrange any further tests, such as scans or repeat blood tests, if needed.

Finish prescribed antibiotics and attend any follow-up checks.
Build strength and energy back gradually, with physiotherapy if offered.
Keep up to date with recommended vaccinations, as advised by your GP.
Treat new infections promptly and know the sepsis red-flag signs.
Tell your GP about ongoing low mood, anxiety or memory problems after a severe episode.

Repeat, follow-on and what comes next

Antibiotics are often changed once blood cultures and tests show which germ is responsible.
People may move between a ward, HDU and intensive care as they get better or more unwell.
More than one procedure may be needed to control the source of infection.
Recovery is not always a straight line, and setbacks do not mean treatment has failed.

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

Clear written information on the sepsis red-flag signs and when to call 999.
A finished antibiotic course, with the source of infection confirmed as treated.
A GP recovery review after a severe episode, and a critical care follow-up clinic where relevant.
Support for the physical and emotional after-effects of sepsis, including fatigue and low mood.
Advice on preventing future infection, including any recommended vaccinations.

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:

Sepsis is emergency NHS care, so most people will never see a bill for its treatment.
Where private care is involved, the severity and the level of care needed (ward, HDU or intensive care) drive cost.
The length of stay and the amount of organ support (breathing, blood pressure, kidney) affect cost.
Antibiotics, fluids, blood tests, blood cultures, scans and any procedures to treat the source add to cost.
Any surgery or drainage to control the source of infection adds to cost.
Rehabilitation and follow-up after a severe episode also matter.

Make sure your written quote includes

For NHS emergency care, there is no charge — ask about practical support such as travel and parking.
If care is private, ask what the daily fee includes and at what level of care.
Ask whether consultant fees, antibiotics, tests, scans and procedures are billed separately.
Ask what happens, clinically and financially, if a transfer to an NHS critical care unit is needed.
Ask how follow-up and rehabilitation after sepsis are arranged and funded.
Ask who to contact about any insurance or billing questions.

On the NHS? Sepsis is a medical emergency treated urgently by the NHS, usually after a 999 call or A&E attendance; it is not a private, bookable treatment, and seriously ill private patients are often transferred to an NHS critical care unit.

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.

What is the source of the infection, and how is it being treated?
Which antibiotics am I on, and will they change once tests come back?
How severe is the sepsis, and do I need high-dependency or intensive care?
What signs of getting worse should we watch for?
What recovery and follow-up should I expect after I go home?
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

Is sepsis the same as blood poisoning?

'Blood poisoning' is an old term often used for sepsis or for bacteria in the blood. Sepsis is the medical term for the body's life-threatening overreaction to an infection. It is always treated as an emergency.

How quickly does sepsis need to be treated?

Very quickly. Hospitals aim to give antibiotics into a vein within the first hour to people assessed as being at high risk. Other treatments, such as fluids and oxygen, are added when they are clinically needed. Every hour of delay can matter for someone who is seriously unwell, which is why red-flag signs mean calling 999.

Can sepsis be caught early at home?

You cannot diagnose sepsis at home, but you can spot warning signs. If someone with an infection develops slurred speech, confusion, severe breathlessness, mottled skin, or seems to be getting rapidly worse, call 999 and ask, 'Could it be sepsis?'

Why does recovery take so long?

Sepsis is a severe whole-body illness. Even after the infection is treated, the body needs time to recover, and weakness, tiredness, low mood and poor concentration are common for weeks or months. This is sometimes called post-sepsis syndrome.

Will I get sepsis again?

Most people who recover do not get sepsis again. But having been seriously unwell can leave you more vulnerable to infection for a while, so it is wise to treat new infections promptly and know the red-flag signs.

Is sepsis treated privately?

Sepsis is an emergency and is treated urgently by the NHS, usually after a 999 call or A&E attendance. It is not something you book privately; if you develop sepsis as a private patient, you may be transferred to an NHS critical care unit.

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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: NHS — Sepsis UK Sepsis Trust — Spotting the signs of sepsis UK Sepsis Trust — clinical tools and the Sepsis Six NHS — When to call 999 NICE CG83 — Rehabilitation after critical illness in adults NICE NG253 — Suspected sepsis in people aged 16 and over NICE NG254 — Suspected sepsis in people under 16 NICE NG255 — Suspected sepsis in pregnancy or recent pregnancy nidirect — urgent and emergency care services nidirect — GP out-of-hours service

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.