Why Do I Feel Ill After Flu Jab?

What medications interact with the flu shot?

Interaction between a vaccine and a drug has been reported only with influenza vaccine and four drugs (aminopyrine, phenytoin sodium, theophylline, and warfarin sodium), and with BCG vaccine and theophylline..

Why do I feel unwell after flu jab?

“There are several reasons people feel unwell after a flu jab. “The first is, when you have the vaccine then your body mounts an immune response, so it reacts and starts working to make your body immune to it and that can make you feel a little bit coldy. “But that is not the same as having the flu.

How long does fatigue last after flu shot?

Also, headache, fatigue and soreness are common side effects that can last up to three days. Rarely, people with certain allergies can go into anaphylaxis after the flu shot. “It’s very rare but, sometimes, you can have a very serious reaction.

Is it OK to take ibuprofen after getting a flu shot?

Your doctor may recommend treating fever and pain with an aspirin-free pain reliever such as acetaminophen (Tylenol) or ibuprofen (Motrin, Advil, and others) when the shot is given and for the next 24 hours.

How long does flu shot immunity last?

How long does immunity from influenza vaccine last? Protection from influenza vaccine is thought to persist for at least 6 months. Protection declines over time because of waning antibody levels and because of changes in circulating influenza viruses from year to year.

How long does soreness last after flu shot?

Swelling, redness and soreness are common after the flu shot and can last 24-48 hours. “If you always experience soreness or swelling after a flu vaccination, take an ibuprofen about 2 hours prior to vaccination,” suggests Dr.

What happens if you give a flu shot too high?

When a flu shot is improperly administered, the needle can cause damage to the nerves, muscles and other soft tissue beneath the surface of the skin. This damage can lead to various types of injuries, all of which are classified as SIRVA.

What are the side effects of this year’s flu shot?

According to the CDC, mild side effects from the flu shot include soreness, redness or swelling at the injection site, low-grade fever and aches. Only about 1 percent to 2 percent of people who get a flu shot will have fever as a side effect, Schaffner said.

Does the flu shot weaken your immune system?

Getting a flu shot does not weaken your immune system and make you more likely to get the flu. Getting a flu vaccine prepares your immune system for the flu. A flu vaccine teaches your immune system to recognize that virus as a threat.

How does the flu affect your immune system?

The influenza virus has already started its own rapid replication by the time this process gets started, so the adaptive immune system must generate a lot of T cells to wage a proper war. This massive production of T cells that infiltrate your lungs, throat, and nose cause inflammation, swelling, and pain.

How soon after being sick can you get a flu shot?

As with the flu shot, people who have a mild illness can receive the nasal spray vaccine. However, people with moderate to severe illnesses may need to wait until they’ve recovered.