wasp venom at a glance
Medicine class
Allergen-specific immunotherapy.
Usual role
Prevention of systemic reactions to future wasp stings; it does not treat an acute sting reaction.
Administration
Subcutaneous injection in a specialist clinic with observation afterwards.
Key safety point
Tell the allergy team about illness, worsening asthma, recent reactions or medicine changes before each injection.
What is wasp venom used for?
The selected product is licensed for allergen immunotherapy when all the following apply:
There is a documented previous generalised or systemic allergic reaction to wasp venom.
The reaction is IgE-mediated.
Sensitisation to Vespula venom is confirmed by an appropriate skin or specific-IgE test.
How does wasp venom work?
Repeated controlled exposure changes the immune response to wasp venom, reducing allergic-cell activation and histamine release while increasing protective immune responses. This makes a severe systemic reaction less likely after another sting, but protection is not absolute.
How to take wasp venom
Wasp venom immunotherapy must be given by staff experienced in allergen immunotherapy, with resuscitation treatment immediately available.
It is injected under the skin of the arm or forearm, not into a vein.
Remain in the clinic for the required observation period.
On the injection day, avoid strenuous exercise, hot baths and alcohol.
Tell the clinic if you are unwell, asthma or eczema has worsened, you recently had an allergic reaction, or your medicines have changed.
wasp venom side effects
Common or expected effects
- Injection-site swelling, redness, pain or itching
- Injection-site hives or a small persistent nodule
- Tiredness or headache
Get urgent medical advice
- Systemic allergic reaction, including widespread hives or swelling
- Wheezing, breathlessness, chest or throat tightness
- Low blood pressure, severe dizziness, fainting or collapse
- Anaphylactic shock
wasp venom in pregnancy
Treatment should not be started or increased during pregnancy because an allergic reaction could endanger the pregnant person and fetus. If pregnancy begins during established maintenance treatment, continuation may be considered only after specialist review.
wasp venom while breastfeeding
Clinical breastfeeding data are unavailable, but effects on a breastfed infant are not anticipated. Discuss ongoing treatment with the allergy specialist.
wasp venom interactions
No formal human interaction studies have been conducted. The allergy team should review all prescribed, non-prescription and complementary products.
ACE inhibitors
May increase the severity of anaphylaxis and possibly reduce the response to immunotherapy; individual specialist risk assessment is needed.
Beta-blockers
May reduce the response to adrenaline used for anaphylaxis, so closer monitoring may be needed.
Tricyclic antidepressants, MAO inhibitors and COMT inhibitors
May intensify adrenaline's effects if emergency treatment is required, potentially causing serious cardiovascular effects.
Common questions about wasp venom
Answers are fully visible for fast scanning and source review.
Is wasp venom used to treat an acute wasp sting?
No. It is preventive immunotherapy. An acute allergic reaction requires the prescribed emergency plan and urgent medical treatment when indicated.
Who can receive wasp venom immunotherapy?
It is licensed for people with a documented systemic IgE-mediated reaction to Vespula venom and confirmation by an appropriate allergy test.
Why is it given in a specialist clinic?
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.