Drugs Home > C1 Esterase Inhibitor

When and How to Use This Medication

Some general considerations to keep in mind during treatment with C1 esterase inhibitor include the following:
  • C1 esterase inhibitor comes as a powder that is dissolved in sterile water for injection to form a liquid. It is given as a slow injection into a vein (an intravenous, or IV, injection).
  • The injections may be given by your healthcare provider, or (after proper training) self-injected. If you will be self-administering this medication, make sure you completely understand how to prepare your dose and inject it.
  • You should wash your hands before preparing your dose, and work on a clean surface to prevent contaminating the medicine with germs.
  • If you self-administer C1 esterase inhibitor to treat a laryngeal (voice box) attack, you should seek immediate medical attention after treating yourself. Laryngeal attacks can be life-threatening.
  • If you use the medication to treat an abdominal (stomach) attack, let your healthcare provider know afterwards so other possible causes of your symptoms can be excluded.
  • For the medication to work properly, it must be used as prescribed.

Dosing Information

The dose your healthcare provider recommends may vary, depending on the particular product you will be using and your weight. As is always the case, do not adjust your dosage unless your healthcare provider specifically tells you to do so.
(Click C1 Esterase Inhibitor Dosage for more information.)

Drug Interactions With C1 Esterase Inhibitor

C1 esterase inhibitor is not likely to interact with other medicines (see Drug Interactions With C1 Esterase Inhibitor).
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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