C1-esterase inhibitor, human at a glance
Medicine class
Plasma-derived C1-inhibitor replacement
Usual role
Prevention of recurrent hereditary angioedema attacks
Administration
Subcutaneous injection after patient or carer training
What is C1-esterase inhibitor, human used for?
The selected subcutaneous product is licensed for:
Preventing recurrent hereditary angioedema attacks in adolescents and adults with C1-esterase inhibitor deficiency.
How does C1-esterase inhibitor, human work?
C1-esterase inhibitor controls complement activation and the contact system, including factor XIIa and plasma kallikrein. Replacing deficient activity limits excessive bradykinin production, which contributes to hereditary angioedema swelling.
How to take C1-esterase inhibitor, human
This formulation is injected under the skin and may be self-administered only after appropriate training. Follow the product instructions and the technique taught by the specialist team.
Reconstitute and withdraw the solution using aseptic technique and the supplied equipment.
Gently swirl the vial; do not shake it.
The abdomen is the suggested injection area. Rotate sites and avoid painful, swollen, bruised, red or damaged skin.
Use only if the prepared solution is colourless and clear to slightly opalescent, without particles.
Do not mix it with another medicine or diluent.
Record the product name, batch number and administration details each time.
C1-esterase inhibitor, human side effects
Common or expected effects
- Injection-site reactions such as pain, redness, swelling, itching, bruising or warmth
- Cold-like inflammation of the nose and throat
- Dizziness
- Allergic symptoms such as itching, rash or hives
Get urgent medical advice
- A severe allergic reaction, including marked breathing difficulty, severe dizziness, faintness or collapse
C1-esterase inhibitor, human in pregnancy
Published experience and limited product data have not identified an increased pregnancy risk, but evidence remains limited. Pregnancy can affect hereditary angioedema, so treatment and delivery plans should be reviewed with specialist and maternity teams.
C1-esterase inhibitor, human while breastfeeding
It is unknown whether this product enters human milk or affects a breastfed infant or milk production. The prescriber should weigh the need for treatment against potential risks while considering the benefits of breastfeeding.
C1-esterase inhibitor, human interactions
Formal interaction studies have not been performed. Tell the specialist team about all medicines being used.
Other medicines or diluents in the same syringe
Do not mix them with this product because compatibility has not been established.
Oestrogen-containing contraceptives or androgen medicines
These may add to existing blood-clot risk factors and should be discussed with the prescriber.
Common questions about C1-esterase inhibitor, human
Answers are fully visible for fast scanning and source review.
What is C1-esterase inhibitor, human made from?
It is a purified human C1-esterase inhibitor protein made from donated human plasma.
Is it used for allergic swelling?
The selected product is licensed for hereditary angioedema caused by C1-inhibitor deficiency, which is bradykinin-mediated rather than a typical allergic reaction.
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.