Abrysvo Dosage

Generic name: RECOMBINANT STABILIZED RSV A PREFUSION F ANTIGEN 0.06mg in 0.5mL, RECOMBINANT STABILIZED RSV B PREFUSION F ANTIGEN 0.06mg in 0.5mL;
Dosage form: injection
Drug class: Viral vaccines

Medically reviewed by Drugs.com. Last updated on Jun 23, 2025.

Dose and Schedule

After reconstitution, a single dose of ABRYSVO is either 0.5 mL (Act-O-Vial presentation and vial and vial presentation) or approximately 0.5 mL (vial and prefilled syringe presentation).

Presentations and Reconstitution

ABRYSVO is supplied in 3 presentations as follows:

Act-O-Vial Presentation

The Act-O-Vial presentation is supplied in cartons. Each Act-O-Vial contains the Lyophilized Antigen Component (a sterile white powder) and Sterile Water Diluent Component.

Vial and Prefilled Syringe Presentation

The vial and prefilled syringe presentation is supplied in cartons containing a kit(s). Each kit includes a vial of Lyophilized Antigen Component (a sterile white powder), a prefilled syringe containing Sterile Water Diluent Component, and a vial adapter.

Vial and Vial Presentation

The vial and vial presentation is supplied in cartons that include vials of Lyophilized Antigen Component (a sterile white powder) and vials containing Sterile Water Diluent Component.

For all presentations, reconstitute the Lyophilized Antigen Component with the Sterile Water Diluent Component to form ABRYSVO, as described in the instructions below.

Reconstitution Instructions for the Act-O-Vial Presentation


Act-O-Vial presentation	Step 1. Reconstitution of the Lyophilized Antigen Component with the Sterile Water Diluent Component to form ABRYSVO Place the Act-O-Vial on a flat surface and firmly press down on the plastic activator cap to release the center stopper and Sterile Water Diluent Component into the lower chamber. Gently swirl the Act-O-Vial until the powder is completely dissolved. Do not shake.	Step 2. Withdrawal of ABRYSVO Remove the plastic tab covering the center of the top stopper. Using a sterile needle and syringe, insert the needle straight through the center of the stopper. Invert the Act-O-Vial and withdraw 0.5 mL of ABRYSVO. Discard the Act-O-Vial and excess volume after withdrawal of a single dose.

Reconstitution Instructions for Vial and Prefilled Syringe Presentation


Step 1. Attachment of the vial adapter to the vial Remove the flip top cap from the vial of Lyophilized Antigen Component. Peel off the top cover from the vial adapter packaging. While keeping the vial adapter in its packaging, center the adapter over the vial’s stopper and attach to the vial with a straight downward push. Remove the packaging.	Step 2. Connection of the syringe to the vial adapter Hold the syringe of Sterile Water Diluent Component by the Luer lock adapter. Twist to remove the syringe cap. Connect the syringe to the vial adapter by turning the Luer lock.	Step 3. Reconstitution of the Lyophilized Antigen Component with the Sterile Water Diluent Component to form ABRYSVO Inject the entire contents of the syringe into the vial. Hold the plunger rod down and gently swirl the vial until the powder is completely dissolved. Do not shake.	Step 4. Withdrawal of ABRYSVO Invert the vial completely and slowly withdraw the entire contents into the syringe for an approximately 0.5 mL dose of ABRYSVO. Twist to disconnect the syringe from the vial adapter. Attach a sterile needle suitable for intramuscular injection.

Reconstitution Instructions for the Vial and Vial Presentation


Step 1. Withdrawal of the Sterile Water Diluent Using a sterile needle and sterile syringe, withdraw the entire contents of the vial containing the Sterile Water Diluent Component.	Step 2. Reconstitution of the Lyophilized Antigen Component with the Sterile Water Diluent Component to form ABRYSVO Inject the entire contents into the vial containing the Lyophilized Antigen Component (white powder). Gently swirl the vial in a circular motion until the powder is completely dissolved. Do not shake.		Step 3. Withdrawal of ABRYSVO Withdraw 0.5 mL from the vial containing the reconstituted vaccine. Discard the vial and any excess volume after withdrawal of a single dose.

Administration

For intramuscular injection

After reconstitution, ABRYSVO is a clear and colorless solution. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Discard if either condition is present.

Administer ABRYSVO immediately or store at room temperature [15°C to 30°C (59°F to 86°F)] and use within 4 hours. Discard reconstituted vaccine if not used within 4 hours.

Frequently asked questions

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Drug Status

Availability Prescription only Rx

Pregnancy & Lactation Risk data available

CSA Schedule* Not a controlled drug N/A

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Pill medicine is Abrysvo lyophilized antigen for injection — Abrysvo lyophilized antigen for injection

Abrysvo Dosage

Dose and Schedule

Presentations and Reconstitution

Administration

Frequently asked questions

More about Abrysvo (rsv vaccine, pref a-pref b, recombinant)

Patient resources

Professional resources

Related treatment guides

See also:

Arexvy

Beyfortus

Dupixent

mRESVIA

Synagis

Enflonsia

Rsv vaccine pref3, recombinant

Nirsevimab

Further information

Abrysvo Dosage

Dose and Schedule

Presentations and Reconstitution

Administration

Does Abrysvo interact with my other drugs?

Frequently asked questions

More about Abrysvo (rsv vaccine, pref a-pref b, recombinant)

Patient resources

Professional resources

Related treatment guides

See also:

Further information