Skip to main content

For US Healthcare Professionals only

Beyfortus® logo
For OB-GYNS
Dosing & Administration

One Last Step

Your request has been received

Thank you for registering. Before we get started, we need to confirm your email address to ensure that we have the correct information.


Please follow these steps to complete your registration:

  1. Check your inbox for an email with the subject line "Confirm Your Email Address."
  2. Open the email and click on the confirmation link to verify your email address.


Didn't receive the email?

  • Check your spam or junk folder.
  • Ensure you entered the correct email address.


If you continue to experience issues, please contact our support team for assistance.

Call us

For more information about Beyfortus®, contact us at 1-855-BEYFORTUS (1-855-239-3678).

Ordering Beyfortus

For ordering questions or information, contact 1-800-VACCINE (1-800-822-2463).

Medical information

For medical questions or concerns, please contact the medical information team at 1-800-633-1610.

Phone Representative

Reach out to a Sanofi representative to get more information or to order Beyfortus today.

Reach Out to a Sanofi Representative

Important Safety Information

Contraindication

Beyfortus is contraindicated in infants and children with a history of serious hypersensitivity reactions, including anaphylaxis, to nirsevimab-alip or to any of the excipients.

Warnings and Precautions

  • Hypersensitivity Reactions Including Anaphylaxis: Serious hypersensitivity reactions have been reported following Beyfortus administration. These reactions included urticaria, dyspnea, cyanosis, and/or hypotonia. Anaphylaxis has been observed with human immunoglobulin G1 (IgG1) monoclonal antibodies. If signs and symptoms of anaphylaxis or other clinically significant hypersensitivity reactions occur, initiate appropriate treatment.
  • Use in Individuals with Clinically Significant Bleeding Disorders: As with other IM injections, Beyfortus should be given with caution to infants and children with thrombocytopenia, any coagulation disorder or to individuals on anticoagulation therapy.

Most common adverse reactions with Beyfortus were rash (0.9%) and injection site reactions (0.3%).

Indication

Beyfortus is indicated for the prevention of respiratory syncytial virus (RSV) lower respiratory tract disease in:

  • Neonates and infants born during or entering their first RSV season.
  • Children up to 24 months of age who remain vulnerable to severe RSV disease through their second RSV season.

Please see full Prescribing Information.

Click here to learn more about Sanofi’s commitment to fighting counterfeit drugs.

Important Safety Information

Indication

MAT-US-2504779-v4.0-06/2026

Back to top
Back to top
SitemapLegal NoticePrivacy PolicyCookie PolicyDo Not Sell or Share My Personal InformationContactAccessibility Statement
© 2026 Sanofi. All rights reserved.