H1N1 influenza virus vaccine Side Effects

Please note - some side effects for H1N1 influenza virus vaccine may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Side Effects by Body System - for Healthcare Professionals

Applies to: nasal spray


Respiratory side effects have included nasal congestion, runny nose, sore throat, and cough.


Gastrointestinal side effects have included nausea, vomiting, and diarrhea.


Dermatologic side effects have included rash.


General side effects have included tiredness/weakness and chills.


Hypersensitivity side effects have included anaphylactic reactions, facial edema and urticaria.


Musculoskeletal side effects have included muscle aches.

Nervous system

Nervous system side effects have included headache, Guillain-Barre syndrome and Bell's Palsy.


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