Allergy and immunology
Medicines for Angioedema
Deeper swelling of areas such as the lips, tongue, face, throat, hands or gut wall, which can occur with hives or on its own — usually allergic or histamine-related, sometimes triggered by certain medicines, and rarely caused by an inherited form needing specialist treatment.
Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.
Quick answer
What is Angioedema?
Angioedema is swelling that happens in the deeper layers of the skin and the tissues beneath it, typically affecting the lips, tongue, face and around the eyes, but also the throat, hands, feet, genitals or even the wall of the gut. It can appear alongside the raised, itchy weals of hives (urticaria), or it can occur on its own.
- How it is treated: How angioedema is managed depends on its cause.
- Self-care: Learning and avoiding any known triggers, telling your doctor about all the medicines you take so a drug cause can be spotted and stopped, never restarting a medicine that has caused swelling, carrying any prescribed adrenaline auto-injector if you are at risk of a severe reaction, and seeking specialist follow-up for repeated or unexplained episodes all help to keep angioedema under control and reduce the chance of a dangerous flare.
- When to seek help: Call 999 immediately and treat it as a life-threatening emergency if swelling affects the tongue or throat, or if there is any difficulty breathing or swallowing, a hoarse voice, or feeling faint or collapsing — if an adrenaline auto-injector has been prescribed, use it straight away while waiting for help.
What it is
Angioedema is swelling that happens in the deeper layers of the skin and the tissues beneath it, typically affecting the lips, tongue, face and around the eyes, but also the throat, hands, feet, genitals or even the wall of the gut. It can appear alongside the raised, itchy weals of hives (urticaria), or it can occur on its own. Most angioedema is allergic or histamine-related, the same kind of process behind hives, and it tends to come on fairly quickly and settle within a day or two. Some angioedema is triggered by particular medicines — most notably the blood-pressure drugs called ACE inhibitors, which can cause swelling sometimes long after they were started. There is also a rare inherited form, hereditary angioedema, caused by a deficiency of a protein called C1-inhibitor; this behaves differently, does not respond to the usual allergy treatments, and needs specific specialist care. Whatever the cause, swelling that affects the tongue or throat, or makes breathing or swallowing difficult, is dangerous and must be treated as an emergency.
How it is treated
How angioedema is managed depends on its cause. For the common allergic or histamine-related type, antihistamines are the mainstay, helping to settle the swelling and any accompanying hives, and a short course of corticosteroids may be used for more severe flares. Identifying and avoiding any obvious trigger, where one can be found, is part of care. Where a medicine is the cause — ACE inhibitors being the classic example — the responsible drug must be stopped and avoided in future, and an alternative used instead; this is an important step because the swelling can otherwise keep recurring. The rare hereditary form is different in a crucial way: it does not respond to antihistamines, corticosteroids or adrenaline, and is managed by specialists using specific treatments aimed at the underlying protein deficiency, so recognising and referring it matters. Across all types, the overriding priority is safety: any swelling involving the tongue or throat, or affecting breathing or swallowing, is a medical emergency that needs immediate treatment.
For this condition, these medicines
Medicine classes used for Angioedema
Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.
Symptom checker
Symptoms that can point to Angioedema
Angioedema can be one cause of these symptoms. Each guide explains the other possible causes and the red-flag warning signs that mean you should get urgent help:
Beyond medication
Lifestyle and self-care
Learning and avoiding any known triggers, telling your doctor about all the medicines you take so a drug cause can be spotted and stopped, never restarting a medicine that has caused swelling, carrying any prescribed adrenaline auto-injector if you are at risk of a severe reaction, and seeking specialist follow-up for repeated or unexplained episodes all help to keep angioedema under control and reduce the chance of a dangerous flare.
When to get help
When to see a doctor
Call 999 immediately and treat it as a life-threatening emergency if swelling affects the tongue or throat, or if there is any difficulty breathing or swallowing, a hoarse voice, or feeling faint or collapsing — if an adrenaline auto-injector has been prescribed, use it straight away while waiting for help. See your GP if you have repeated or unexplained episodes of swelling so the cause can be found, especially as some angioedema is triggered by medicines such as ACE inhibitors, which need to be stopped, and a rare inherited form needs specialist diagnosis and specific treatment. Always seek medical advice rather than simply restarting a medicine that may have caused swelling.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Angioedema: frequently asked questions
What medicines are used for angioedema?
For the common allergic or histamine-related type, antihistamines are the main treatment, settling the swelling and any hives, and a short course of corticosteroids may be used for more severe flares. Where a medicine such as an ACE inhibitor is the cause, the key step is stopping it and using an alternative. The rare hereditary form is important to recognise because it does not respond to antihistamines, corticosteroids or adrenaline and needs specific specialist treatment instead. Any swelling of the tongue or throat, or trouble breathing, is an emergency treated with adrenaline and urgent care.
Why can blood-pressure tablets cause angioedema?
A group of blood-pressure medicines called ACE inhibitors can cause angioedema, sometimes months or even years after they were started, which can make the link easy to miss. They affect a body chemical (bradykinin) that can build up and lead to swelling, typically of the lips, tongue, face or throat. If this happens, the medicine must be stopped and avoided in future, and your doctor will choose a different type of blood-pressure treatment. Because the swelling can recur and occasionally affect the airway, it is important to seek advice rather than continuing the medicine.
What is hereditary angioedema and how is it different?
Hereditary angioedema is a rare inherited condition caused by a shortage or fault in a protein called C1-inhibitor. It causes recurrent episodes of swelling that, crucially, do not respond to the usual allergy treatments — antihistamines, corticosteroids and adrenaline do not work for it. It is diagnosed with specific blood tests and managed by specialists using treatments aimed directly at the underlying protein problem, both to treat attacks and to prevent them. This is why repeated or unexplained swelling, particularly with a family history, should be assessed properly rather than treated as ordinary allergy.
Is angioedema dangerous?
Most episodes of allergic or histamine-related angioedema settle on their own or with antihistamines, but angioedema can be dangerous when it affects the airway. Swelling of the tongue or throat, or any difficulty breathing or swallowing, can be life-threatening and is a medical emergency — call 999 at once and, if you have been prescribed an adrenaline auto-injector, use it straight away. Even when an episode seems mild, repeated or unexplained swelling is worth getting assessed, both to find and remove any trigger and to make sure a more serious cause is not being missed.
Sources
Where this is drawn from
- NICE CKS: Angioedema and anaphylaxis.
- Allergy UK
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