Angioedema: Swelling Under the Skin on Drug Labels
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[Glossary · How doses act in the body]

Angioedema

Also called deep swelling, swelling of the face, lips, tongue or throat · Reviewed

Definition: Angioedema is swelling under the skin rather than on its surface. MedlinePlus describes it as similar to hives but deeper, usually around the eyes and lips, and sometimes the hands, feet or throat. It can come from an allergic reaction, including to medicines, and swelling that makes breathing hard is an emergency.

Which labels list it

  • GLP-1 medicines: the Ozempic and Wegovy labels list serious allergic reactions such as anaphylaxis and angioedema, and say to stop the medicine if they occur.
  • DPP-4 pills: Januvia and Tradjenta report anaphylaxis, angioedema and skin peeling reactions, mostly within the first 3 months and some after the first dose.
  • Blood pressure medicines: MedlinePlus names ACE inhibitors as a known medicine cause. The telmisartan label (an angiotensin receptor blocker) lists angioedema after approval, including cases with a fatal outcome, and one case among 3,781 people in early studies.

What it looks like

The main sign is sudden swelling below the skin. It may come with hives, belly cramps, swollen eyes and mouth, or trouble breathing. Unlike hives, it is usually not itchy. MedlinePlus notes that often no cause is found, and that a rare inherited form exists with different triggers.

Why it matters for your log

The DPP-4 labels say most reactions came early in treatment. A log that shows when a medicine was started or a dose changed helps a clinician judge whether a swelling episode lines up with it, alongside any new food, supplement or other medicine that week.

Read more on Dose Track: Allergic reactions to GLP-1 medicines · Ozempic side effects · Januvia side effects · Telmisartan side effects

General education drawn from labels and published studies, not personal medical advice. Your prescriber, pharmacist and the label that came with your product are the final word.
AnaphylaxisAnaphylaxis is a severe, whole-body allergic reaction that can be life-threatening. MedlinePlus says it… GLP-1 receptor agonistA GLP-1 receptor agonist is a drug that switches on the same receptor as GLP-1 (glucagon-like peptide-1),… DPP-4 inhibitorA DPP-4 inhibitor is a class of oral type 2 diabetes drugs that includes sitagliptin (Januvia) and… Injection site reactionAn injection site reaction is any change at the spot where a shot went in: redness, swelling, itching,… Postmarketing experiencePostmarketing experience is the part of a label, usually section 6.2, that lists side effects reported…

Frequently asked questions

Is angioedema the same as hives?+
No. Hives are swelling on the surface of the skin and are very itchy. Angioedema is deeper swelling under the skin and is usually not itchy. The two can happen together.
Is angioedema an emergency?+
MedlinePlus says breathing difficulty is an emergency. Swelling of the tongue or throat needs urgent care. The GLP-1 and DPP-4 labels say to stop the medicine if a serious allergic reaction occurs.

Sources

  1. MedlinePlus (NIH): Angioedema
  2. Ozempic (semaglutide) US prescribing information, DailyMed
  3. Wegovy (semaglutide) US prescribing information, DailyMed
  4. Januvia (sitagliptin) US prescribing information, DailyMed
  5. Tradjenta (linagliptin) US prescribing information, DailyMed
  6. Telmisartan tablets US prescribing information, DailyMed

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