Possible Reactions and What to Expect
According to the CDC flu shot guidelines, common side effects include:
- Soreness, redness, or swelling at the injection site
- Headache or mild fever
- Nausea
- Muscle aches
These symptoms generally appear within a day or two and fade quickly. A dose of Tylenol or Ibuprofen, rest, and hydration can help you feel better.
In rare cases, fainting may occur shortly after vaccination, which is why it’s standard for healthcare providers to observe patients briefly after the shot.
If symptoms persist or worsen, reach out to your primary care physician or visit an urgent care center for a professional evaluation.
