Most COVID-19 vaccination side effects are mild and get better within a week1
It’s normal to have some mild side effects after having your COVID-19 vaccination, although not everyone will experience them.
Most common side effects are mild, short-lived and are usually a sign that your immune system is responding to the vaccine.
Common side effects can include:
- Pain, tenderness or a heavy feeling in the arm where you had the injection
- Feeling tired
- Headache
- General aches and pains
- Chills or fever
You might also experience flu-like symptoms for a short time after your vaccination, but resting and taking paracetamol may help you feel better.1.1
It isn't guaranteed that you'll experience side effects from the vaccine, and even if you do then these tend to be mild and pass quickly. The longer-term effects of contracting COVID-19 could lead to much more serious and unpleasant health complications, so it's always worth making the choice that feels right for you and your health.
Relief for aches and discomfort
Can the COVID vaccine give you COVID?
No, the COVID vaccine can’t give you COVID-19. The vaccines don’t contain a live version of the virus that causes COVID-19.
Some people may experience mild side effects after their vaccination, such as a headache, tiredness, aches or chills. These can feel similar to symptoms you might experience when you’re unwell, but they don’t mean that the vaccine has given you COVID-19.
Is the COVID-19 jab safe?
COVID-19 vaccines used in the UK have to meet strict standards for safety, quality and effectiveness. Their safety has also been carefully reviewed by the Medicines and Healthcare products Regulatory Agency (MHRA), which is responsible for regulating medicines and vaccines in the UK.
The MHRA continues to monitor the safety of COVID-19 vaccines. While side effects can happen with any vaccine, most related to the COVID vaccine are mild and don’t last for long, and serious side effects are very rare.1.2
1. COVID-19 vaccine, NHS UK. Last updated September 2024.
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