Skip to main content

Cinryze Dosage

Generic name: HUMAN C1-ESTERASE INHIBITOR 500[iU] in 5mL
Dosage form: injection, powder, lyophilized, for solution
Drug class: Hereditary angioedema agents

Medically reviewed by Drugs.com. Last updated on Feb 23, 2023.

For intravenous use only.

Dose

Table 1 Routine Prophylaxis Dosing in Adults, Adolescents, and Pediatric Patients.
Patient Population Indication Dose Infusion Rate
*
One International Unit (IU) corresponds to the amount of C1 esterase inhibitor present in 1 mL of normal plasma as defined by the WHO international reference standard. Previously, the potency values were expressed in Units (U) and were relative to an in-house reference standard. A conversion factor of 0.83 can be used to recalculate the potency from U to IU, i.e., 100 U = 83 IU. The data that were generated with CINRYZE expressed in Units, are not converted to IU in the Prescribing Information.
Adults and adolescents
(12 years old and above)		 Routine prophylaxis against HAE attacks 1,000 International Units (IU)* Intravenous (IV) every 3 or 4 days. For patients who have not responded adequately, doses up to 2,000 IU (not exceeding 80 IU/kg) every 3 or 4 days may be considered based on individual patient response. 1 mL/min
(10 min)
Pediatric patients
(6 to 11 years old)		 Routine prophylaxis against HAE attacks 500 IU, Intravenous (IV) every 3 or 4 days. The dose may be adjusted according to individual response, up to 1,000 IU every 3 or 4 days. 1 mL/min
(5 min)

Preparation

  • Protect CINRYZE from light prior to reconstitution.
  • A silicone-free syringe is recommended for reconstitution and administration of CINRYZE.
  • Inspect the reconstituted product for particulate matter prior to administration; do not use if particles are observed or if solution is turbid. The reconstituted solution is colorless to slightly blue.
  • Each vial of CINRYZE is for single use only. Promptly use any vial that has been entered and discard partially used vials in accordance with biohazard procedures. CINRYZE contains no preservative.
  • Do not mix CINRYZE with other materials.
  • Do not use if frozen.
  • Do not use after expiration date.
  • Use aseptic technique during the reconstitution procedure.
  • Bring the CINRYZE (powder) and Sterile Water for Injection, USP (diluent) to room temperature if refrigerated.
  • Remove caps from the CINRYZE and diluent vials.
  • Cleanse stoppers with an alcohol wipe or swab and allow them to dry prior to use.
  • Remove protective covering from the top of the Mix2Vial transfer device package. Do not remove the device from the package.
  • Note: Diluent vial must be accessed prior to the vial of CINRYZE to prevent loss of vacuum.

Reconstitution

Sterile Water for Injection USP is required for reconstitution. CINRYZE is supplied with or without Sterile Water for Injection USP (see How Supplied/Storage and Handling [16]).

One vial of reconstituted CINRYZE is used for a single 500 IU dose. Two vials of reconstituted CINRYZE are combined for a single 1,000 IU dose.

  1. Place diluent on a flat surface and insert the blue end of the device into the diluent vial, pushing down until the spike penetrates through the center of the diluent vial stopper and the device snaps in place (Figure 1). The Mix2Vial transfer device must be positioned completely vertical prior to penetrating the stopper closure.
    Figure 1
    Figure 1
  2. Remove the plastic package and discard it (Figure 2). Take care not to touch the exposed end of the device.
    Figure 2
    Figure 2
  3. Place vial of CINRYZE on a flat surface. Invert diluent vial containing 5 mL of Sterile Water for Injection, USP, and insert the clear end into the CINRYZE vial, pushing down until the spike penetrates the rubber stopper and the device snaps into place. The Mix2Vial transfer device must be positioned completely vertical prior to penetrating the stopper closure. The Sterile Water for Injection, USP will automatically flow into the vial of CINRYZE (Figure 3), because the vacuum in the vial will draw in the diluent. If there is no vacuum in the vial, do not use the product.
    Figure 3
    Figure 3
  4. Gently swirl (do not shake) the CINRYZE vial until all powder is dissolved. Be sure that CINRYZE is completely dissolved (Figure 4).
    Figure 4
    Figure 4
  5. Disconnect the Sterile Water for Injection, USP vial by turning it counterclockwise (Figure 5). Do not remove the clear end of the Mix2Vial transfer device from the vial of CINRYZE.
    Figure 5
    Figure 5

One vial of reconstituted CINRYZE contains 5 mL of C1 esterase inhibitor at a concentration of 100 IU/mL. Reconstitute one vial of CINRYZE for one 500 IU dose. Reconstitute two vials of CINRYZE for one 1,000 IU dose. Repeat steps 1 to 5 above using an additional package containing a Mix2Vial transfer device to reconstitute the second of two vials of CINRYZE. Do not reuse the Mix2Vial transfer device. CINRYZE must be administered at room temperature within 3 hours after reconstitution. For higher doses up to 2,000 IU (not exceeding 80 IU/kg) additional vial(s) will need to be reconstituted.

Administration

The procedures below are provided as general guidelines for the reconstitution and administration of CINRYZE. Use either the Mix2Vial® transfer device or a commercially available double-ended needle.

Always work on a clean surface and wash your hands before performing the following procedures.

Reconstitution, product administration, and handling of the administration set, and needles must be done with caution. Percutaneous puncture with a needle contaminated with blood can transmit infectious viruses including HIV (AIDS) and hepatitis. Obtain immediate medical attention if injury occurs. Place needles in a sharps container after single use. Discard all equipment, including any reconstituted CINRYZE, in an appropriate container.

One vial of reconstituted CINRYZE is used for a single 500 IU dose.

Two vials of reconstituted CINRYZE are combined for a single 1,000 IU dose.

For higher doses of up to 2,000 IU, combine the contents of the relevant number of vials.

Instructions for Use

  1. Use aseptic technique.
  2. After reconstitution, the solution should be clear with no evidence of turbidity. Reconstituted solution should be colorless to slightly blue. Do not use if solution is turbid or otherwise discolored.
  3. Please refer to the illustrations in steps 7 to 9 included within the Patient Information Leaflet. Utilizing a sterile, disposable 10 mL syringe, draw back the plunger to admit 5 mL air into the syringe.
  4. Attach the syringe onto the top of the clear end of the Mix2Vial transfer device by turning it clockwise.
  5. Invert the vial and inject air into the solution and then slowly withdraw the reconstituted CINRYZE into the syringe.
  6. Detach the syringe from the vial by turning it counterclockwise and releasing it from the clear end of the Mix2Vial transfer device.
  7. For a 1,000 IU dose, using the same syringe, repeat steps 3 to 6 with a second vial of CINRYZE to make the complete dose.
  8. Promptly administer CINRYZE after preparation in the syringe and do not use if particles are observed or if the solution is turbid.
  9. Attach a suitable needle or infusion set with winged adapter and inject intravenously. As a guideline, administer CINRYZE by intravenous injection at a rate of 1 mL per minute. A single dose of 500 IU (reconstituted in 5 mL) of CINRYZE should be administered over 5 minutes. A single dose of 1,000 IU (reconstituted in 10 mL) of CINRYZE should be administered over 10 minutes. (see Dosage and Administration [2].) Please refer to the illustration in step 3 of the self-administration section within the Patient Information Leaflet.
  10. Dispose of all unused solution, the empty vial(s), and the used needles and syringes in an appropriate container for throwing away waste that might hurt others if not handled properly.

Frequently asked questions

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer