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Enflonsia

Enflonsia Side Effects

Samantha Kasting, PharmD CandidateDaisy Chau, PharmD
Reviewed by Samantha Kasting, PharmD Candidate, Daisy Chau, PharmD
Last reviewed on October 3, 2025

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

  • Redness at the injection site (4%)
  • Swelling at the injection site (3%)
  • Rash (2%)

Less Common Side Effects

  • Diarrhea
  • Decreased appetite
  • Sleepiness
  • Irritability
  • Fever

Enflonsia serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • Severe allergic reaction: Swelling of the face or throat, hives, itching
When do Enflonsia possible side effects begin and end?
Time passed since treatment started:
H
D
W
M
Swelling at the injection site
Redness at the injection site
Rash
Fever

Source: DailyMed

The following Enflonsia side effects have also been reported

Side effects that you should report to your care team as soon as possible:

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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