Tetanus vaccine side effects are usually mild and short-lived. For the Td/IPV booster used in the UK, the most common reactions are pain, redness, hardening or swelling where the injection was given. Some people also develop a headache, dizziness, a temperature, nausea or vomiting.
Most expected reactions begin within the first day or two and improve over the next few days. Serious allergic reactions are rare, but sudden breathing difficulty, swelling of the face or throat, collapse or other signs of anaphylaxis need emergency treatment.
This guide explains what is expected after a tetanus-containing vaccination, how long reactions can last, simple aftercare, and the symptoms that should be checked. It focuses on UK tetanus booster use. The exact side-effect list can differ between vaccine products, ages and clinical indications, so the patient information leaflet for the vaccine you actually received remains the product-specific reference.
What tetanus vaccine is used in the UK?
Tetanus protection is normally given as part of a combined vaccine rather than a tetanus-only injection. The NHS Td/IPV booster protects against tetanus, diphtheria and polio, and the NHS currently links to Revaxis as the patient leaflet for the UK Td/IPV vaccine.
Other tetanus-containing combination vaccines may be used for different ages or indications. That matters because a side-effect list should not be copied from one product and presented as if it applies identically to every tetanus-containing vaccine.
If you are deciding whether a booster is due rather than checking a reaction, read how long the tetanus vaccine lasts. For access, formulation and current commercial information, use the diphtheria, tetanus and polio vaccine guide or the tetanus vaccine cost and booking guide.
Common tetanus vaccine side effects
For Revaxis, injection-site reactions are the most frequently reported effects. The product information describes pain, redness, hardening, swelling or a small nodule at the injection site as very common. These reactions usually begin within 48 hours and commonly last around one to two days.
Common general reactions reported with Revaxis include headache, dizziness, fever, nausea and vomiting. Less common reactions include swollen glands, feeling generally unwell and muscle aches; joint pain is listed as rare.
· Pain or tenderness in the vaccinated arm
· Redness, firmness, swelling or a small lump where the injection was given
· Headache or dizziness
· A mild temperature or fever
· Feeling sick or being sick
· Feeling generally unwell or achy
Not everybody has side effects. Having no noticeable reaction does not mean the vaccine failed, and a stronger reaction does not show that you have developed better protection.
How long do tetanus vaccine side effects last?
Most mild reactions improve quickly. With Revaxis, the common injection-site reactions generally start within 48 hours and last for about one to two days. A larger local reaction can occasionally begin within 24 to 72 hours and may take three to five days to settle.
The useful sign is improvement. Soreness or swelling should gradually become less troublesome rather than becoming progressively more painful, hot or extensive. General symptoms such as headache, mild fever or nausea should also settle rather than intensify.
Symptoms that start much later, persist for an unusually long time or are getting worse should not automatically be labelled as a vaccine reaction. Another infection, medicine or unrelated condition may be responsible, so ask a healthcare professional for advice if the pattern does not fit an expected short-lived reaction.
A large or swollen arm after a tetanus booster
A more extensive injection-site reaction is recognised in the Revaxis product information. It can involve swelling greater than 5 cm and may extend beyond one or both nearby joints. These reactions usually start within 24 to 72 hours and are reported to settle spontaneously within about three to five days.
Large swelling can look alarming, but size alone does not confirm an allergy. Contact the vaccination clinic, a pharmacist, GP or NHS 111 if swelling is severe, rapidly increasing, very painful, associated with a high or persistent fever, or not beginning to improve. If swelling is accompanied by breathing difficulty, facial or throat swelling, collapse or another rapidly developing severe reaction, treat it as an emergency.
Tetanus vaccine aftercare
Aftercare is mainly about comfort and monitoring. Most people can continue normal activities as they feel able.
· Keep the injection site clean and avoid repeatedly rubbing or pressing it.
· Move the vaccinated arm gently during the day to reduce stiffness.
· A cool, clean compress can be used for short periods if the area feels sore or warm.
· Rest if you feel tired and drink enough fluid, especially if you have a mild temperature.
· Read the patient information leaflet supplied with the vaccine you received.
· If you need pain relief, ask a pharmacist or healthcare professional what is suitable for you and follow the product label.
Do not take antibiotics, steroids or allergy medicines specifically for a vaccine reaction unless a healthcare professional has advised them. Do not arrange another tetanus-containing dose because you think a mild reaction means the first dose did not work.
When should you get medical help after a tetanus vaccine?
Call 999 for signs of anaphylaxis
A severe allergic reaction can happen after any vaccine, although it is rare. Call 999 if you develop sudden swelling of the lips, mouth, tongue or throat, difficulty breathing, wheezing, collapse, severe dizziness or another rapidly worsening reaction that could be anaphylaxis.
Contact NHS 111, a GP, pharmacist or the vaccination clinic
Seek prompt advice if you have a high or persistent fever, severe or increasing pain and swelling, repeated vomiting, a widespread rash, new neurological symptoms, or a reaction that is worsening or not beginning to settle. If you are simply unsure whether what you are experiencing is expected, the vaccination clinic or a pharmacist can often help you decide what to do next.
Give the healthcare professional the vaccination date, product name if known, when the symptoms started, any other vaccines or medicines given at the same time, and relevant medical history. This helps distinguish an expected vaccine reaction from another cause.
A tetanus jab reaction or symptoms of tetanus?
Expected vaccine reactions are usually local or general symptoms that begin soon after vaccination and then improve. Tetanus itself is a serious infection associated with a contaminated wound and causes a very different clinical picture.
NHS warning symptoms of tetanus include a stiff jaw, painful muscle spasms, difficulty breathing or swallowing, a fast heartbeat and seizures. If you have a wound and develop a stiff jaw, painful spasms, breathing difficulty or seizures, call 999 or go to A&E. Do not assume these symptoms are a vaccine side effect.
For wound-related booster decisions, read when and where to get a tetanus booster in the UK and seek prompt NHS assessment for a current deep, dirty, puncture, bite or burn injury rather than waiting for a routine travel-clinic appointment.
Can the tetanus vaccine cause tetanus?
No. The tetanus component in the Td/IPV booster is a tetanus toxoid, not live tetanus bacteria. The polio component is inactivated. The vaccine therefore cannot give you tetanus, diphtheria or polio.
A fever or sore arm after vaccination is an immune or local reaction, not tetanus infection. If you have a concerning wound or symptoms of tetanus, however, you still need medical assessment because vaccination does not treat established tetanus.
Do stronger side effects mean the vaccine is working better?
No. Side-effect intensity is not a measure of protection. Some people feel little or nothing after vaccination and still develop the intended immune response. Others have a sore arm or temporary fever without gaining “extra” protection because the reaction felt stronger.
Do not use symptoms after vaccination to decide whether another dose is needed. Booster and catch-up decisions should be based on your documented vaccination history, age, reason for vaccination and current UK guidance.
Can you have another tetanus-containing dose after a reaction?
A mild sore arm, temporary swelling, headache or short-lived fever does not automatically prevent a future dose. Tell the vaccinator what happened, how quickly it started, how long it lasted and whether you needed treatment.
A previous serious allergic reaction to a tetanus-containing vaccine or one of its ingredients requires individual assessment before another dose. Significant neurological problems after an earlier diphtheria- or tetanus-containing vaccination also need review. Bring your vaccination record so unnecessary repeat doses can be avoided.
What should you tell the vaccinator before a tetanus-containing vaccine?
Before vaccination, tell the healthcare professional about anything that could affect product choice, timing or the vaccination setting.
· A previous anaphylactic or other serious reaction to a vaccine or vaccine ingredient
· A current high temperature or significant acute illness
· Previous neurological problems after a diphtheria- or tetanus-containing vaccination
· A bleeding disorder or treatment that increases bleeding risk
· Conditions or medicines that affect the immune system
· Pregnancy or breastfeeding
· Other vaccines received recently or planned at the same appointment
Most people who need the NHS Td/IPV vaccine can receive it, but suitability is an individual clinical decision. Do not leave out a previous reaction because you are worried it will automatically stop vaccination; the clinician needs accurate information to choose the safest plan.
How to report a suspected vaccine side effect
Patients, parents, carers and healthcare professionals can report suspected vaccine side effects through the MHRA Yellow Card scheme. A Yellow Card report is a safety report, not proof that the vaccine caused the event.
If you report a reaction, include the vaccine name, batch number if available, vaccination date, symptoms, timing, treatment and outcome. Reporting does not replace medical care, so seek clinical advice separately if you are unwell or worried.
Need a tetanus or DTP vaccination assessment for travel?
If your question is whether you need a booster before travel, review the tetanus vaccine cost and booking guide and the diphtheria, tetanus and polio vaccine guide. You can also find a travel vaccination clinic near you through the TravelJabs4U directory.
TravelJabs4U publishes travel-health information and helps users find participating or listed clinics. The selected clinic or pharmacy is responsible for its own clinical assessment, vaccine supply, stock, price and appointment terms. A booking request does not guarantee that a vaccine will be recommended or supplied.
Conclusion
Tetanus vaccine side effects are usually mild and short-lived. A sore, red or swollen arm is the most common reaction, while headache, dizziness, fever, nausea or vomiting can also occur. Most reactions improve over a few days.
Use simple aftercare, follow the leaflet supplied with your vaccine, and ask for advice if symptoms are severe, worsening or not settling. Call 999 for sudden breathing difficulty, swelling of the face or throat, collapse or another severe allergic reaction.
If you are planning a tetanus booster for travel, base the decision on your vaccination record, itinerary and clinical assessment rather than on side-effect concerns alone.
AUTHOR & REVIEW LINE
Written by the TravelJabs4U Editorial Team. Medically reviewed by Mohammed Shajan Ali, MPharm, GPhC-registered pharmacist (GPhC No. 2067785).
Frequently Asked Questions
What are the most common tetanus vaccine side effects?
The most common reactions are pain, redness, hardening or swelling where the injection was given. Headache, dizziness, fever, nausea and vomiting can also occur with the UK Td/IPV booster. The exact list depends on the vaccine product.
How long do tetanus vaccine side effects last?
Most mild reactions improve within a few days. For Revaxis, common injection-site reactions usually begin within 48 hours and commonly last about one to two days. Larger local reactions can take around three to five days to settle.
Is a swollen arm normal after a tetanus booster?
Mild swelling is a recognised reaction. Revaxis also has reports of larger local swelling that can extend beyond a nearby joint and usually settles within several days. Seek advice if swelling is severe, rapidly worsening, very painful or not beginning to improve.
Can a tetanus vaccine cause a fever?
Yes. Fever is listed as a common side effect of the UK Td/IPV booster. A high, persistent or worsening fever should be discussed with a healthcare professional because another cause may need to be considered.
Can the tetanus vaccine give you tetanus?
No. The tetanus component is a toxoid and cannot cause tetanus infection. The UK Td/IPV booster also contains inactivated polio vaccine, so it cannot cause polio.
Does a stronger tetanus jab reaction mean better protection?
No. The presence or intensity of side effects does not show how much protection you have developed. Some people have no noticeable reaction and still develop the intended immune response.
When should I call 999 after a tetanus vaccine?
Call 999 for signs of anaphylaxis such as sudden swelling of the lips, mouth, tongue or throat, difficulty breathing, collapse, severe dizziness or another rapidly worsening life-threatening reaction.
Can I have another tetanus booster after a mild reaction?
A mild sore arm, swelling, headache or short-lived fever does not automatically prevent a future dose. Tell the vaccinator exactly what happened. A previous serious allergic or significant neurological reaction needs individual clinical assessment.
Can I report a suspected tetanus vaccine side effect?
Yes. Patients and healthcare professionals can report suspected reactions through the MHRA Yellow Card scheme. Reporting helps safety monitoring but does not prove that the vaccine caused the event and does not replace medical advice.
DISCLAIMER
This page provides general UK vaccination and travel-health information and is not a substitute for an individual medical assessment. Side effects, contraindications and precautions vary by vaccine product, age, medical history and indication. Follow the advice of the healthcare professional who assessed or vaccinated you and read the patient information leaflet supplied with your vaccine. Call 999 for signs of anaphylaxis or another life-threatening emergency. For non-emergency medical advice in the UK, contact NHS 111, your GP, a pharmacist or the vaccination clinic. A current deep, dirty, puncture, bite or burn injury may need prompt NHS assessment and should not be managed as a routine travel-vaccination booking.
