The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Side effects aren't common. See Other Side Effects.
Less Common Side Effects
- Rash
- Injection site reaction (e.g., pain, hard lump, swelling)
Beyfortus serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Severe allergic reaction: rash, trouble breathing, swelling in the face or throat
When do Beyfortus possible side effects begin and end?
Time passed since treatment started:
H
D
W
M
Rash
Injection site reaction
Source: DailyMed
The following Beyfortus side effects have also been reported
Side effects that you should report to your care team as soon as possible:
- Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
- Pain, redness, or irritation at injection site
- Skin rash
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