Beyfortus® (nirsevimab-alip) 50 mg and 100 mg Injection is available as pre-filled syringes with dosing options based on the patient's weight and age. If you need help ordering, request or contact a Sanofi representative for assistance.1
Ordering
Respiratory syncytial virus (RSV) season is unpredictable2,3
Make sure your practice is prepared
Beyfortus is available through VaccineShop,* VaxServe, and select wholesalers and distributors.† Simply create an account or log in to your existing account to order Beyfortus with immediate shipping.
*All direct customers on VaccineShop will receive 60-day billing terms—excludes wholesale, distributor, and public orders.
†Beyfortus 50 mg and 100 mg Injection is available to purchase through wholesalers and distributors. Please call 1-800-VACCINE for more information.
A single dose for the vast majority of infants based on body weight (5O mg intramuscular [IM] dose if <5 kg, 100 mg IM dose if ≥5 kg)1
For children undergoing cardiac surgery with cardiopulmonary bypass, an additional dose is recommended as soon as the child is stable after surgery. Please consult the Prescribing Information for complete information on dosing in this circumstance. Second season: children up to 24 months of age, regardless of body weight, who remain at increased risk for severe RSV, the recommended dosage of Beyfortus is a single 200 mg dose administered as 2 IM injections (2 x 100 mg).
Each Beyfortus pre-filled syringe is for one-time use only1
Shipping1
Beyfortus is a sterile, preservative-free injection solution that appears clear to opalescent and colorless to yellow.
Packaging and delivery type
Pre-filled syringe
Beyfortus is an IM injection administered through a pre-filled syringe by a healthcare provider.
5-pack cartons
Each carton of Beyfortus contains 5 pre-filled syringes for one-time use.
Dose strengths and formulation
<5 kg weight
50 mg/0.5 mL
NDC: 49281-575-15
≥5 kg weight
100 mg/1 mL
NDC: 49281-574-15
Any weight
2 x 100 mg/1 mL
NDC: 49281-574-15
*For children who remain vulnerable to severe RSV disease up to 24 months of age, regardless of weight.1
The resources you need to be properly reimbursed for administering Beyfortus
Frequently asked questions
Beyfortus orders are shipped immediately after ordering. Actual delivery time is not explicitly specified, but is expected to be rapid (typically within a few days, depending on distributor and location).
Order ahead of need, rather than relying on just-in-time delivery during the RSV season.
If you need help ordering Beyfortus:
Primary route: Call 1-800-VACCINE for ordering and logistics support.
Additional support: Request a Sanofi rep for hands-on assistance.
Call 1-855-BEYFORTUS for general product help.
Multiple support channels are available, but 1-800-VACCINE is the key contact for ordering-related questions.
Important Safety Information
NDC, National Drug Code.
References: 1. Beyfortus (nirsevimab-alip). Prescribing Information. Sanofi. 2. Arriola CS, Kim L, Langley G, et al. Estimated burden of community-onset respiratory syncytial virus-associated hospitalizations among children aged <2 years in the United States, 2014-15. J Pediatric Infect Dis Soc. 2020;9(5):587-595. 3. RSV in infants and young children. Centers for Disease Control and Prevention. Updated February 20, 2026. Accessed June 1, 2026. https://www.cdc.gov/rsv/infants-young-children/index.html
