10 Flu Shot Side Effects You Need To Be Aware Of

So you’ve decided to get yourself a flu shot, that’s great! According to the CDC, flu vaccinations help prevent thousands of people from flu-related hospitalizations annually. But before you get one, there are some things you need to expect.

Some people experience a few side effects, including…

1. Pain In The Injection Site

tonodiaz – Depositphotos.com

After receiving the flu shot, it’s pretty normal to feel pain and weakness for the first few minutes, but for some people, these actually last much longer and may even cause some redness around the injection site.

The pain might also be visible at the injection site…

2. Swelling

starast – Depositphotos.com

Post-injection inflammation (swelling) is another common side effect of getting flu shots since it’s the body’s reaction to the needle and the infused medicine. These typically go away within hours or may even last a few days.

Expect a few nerve-racking moments…

3. Headaches

inesbazdar – Depositphotos.com

People experience mild (or sometimes severe) headaches moments after getting vaccinated. But don’t fret; it’s a normal response of the body’s immune system to the vaccine and is considered an indicator of its efficacy.

You might want to pack an inhaler and a paper bag with you…

4. Nausea & Vomiting

AndrewLozovyi – Depositphotos.com

Some people report experiencing nausea and vomiting after the flu shot due to the body’s immune reaction to the vaccine. Children who received nasal flu shots also tend to share the same symptoms.

It might limit your movement for a while…

5. Muscle Aches

halfpoint – Depositphotos.com

There are a few instances of people suffering from Guillain-BarrĂ© syndrome after getting their flu vaccine. GBS is a neurological condition that attacks the nerve cells which causes intense muscle aches and weakness.

The shot can be too much for the “faint”-hearted…

6. Fainting

pixelaway – Depositphotos.com

While this is uncommon, some adolescents tend to faint after receiving injections, including the flu vaccine. However, this may be due to one’s fear of needles, which causes blood pressure to drop.

Sometimes, it just knocks you down…

7. Mild Fever

photographee.eu – Depositphotos.com

Most people think that experiencing fevers is a dangerous effect of any vaccination. In reality, having a low-grade fever is a good sign that the immune system responds to the vaccine, building immunity against the virus. 

You might need to bring some tissues for this one…

8. Coughing & Sneezing

fizkes – Depositphotos.com

Compared to most of the side effects, coughing and sneezing are much rarer, but if they do happen, they occur moments after the shot. The coughing is usually a dry one, and a runny nose also accompanies the sneezing.

Some side effects make your heart race…

9. Faster Heartrates

minervastock – Depositphotos.com

Tachycardia, a condition where the heart beats faster than normal while at rest, is sometimes felt along with the fever by those who just got their flu shots. It occasionally causes weakness and loss of consciousness.

But don’t think you’re in the clear yet…

10. Other Allergic Reactions

Milkos – Depositphotos.com

While a rare occurrence, it’s still possible for flu shots to cause severe side effects like strained breathing, wheezing, hoarseness, swollen lips, itchy skin, and in a few cases, conjunctivitis.


DISCLAIMER: The views and opinions expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the site owner or any brands and companies mentioned here. Any content provided by our bloggers or authors are of their opinion, and are not intended to malign any religion, ethnic group, club, organization, company, individual or anyone or anything. This article is purely for reference purposes and does not constitute professional advice and may not be reflective of the best choice for your unique situation. This site strives to provide as much accurate information as possible; however, sometimes products, prices, and other details are subject to change. Therefore, this site does not verify for the accuracy of the information presented in this article. This site does not assume any liability for any sort of damages arising from your use of this site and any third party content and services.