Here Are The 5 Most Common COVID-19 Vaccine Side Effects

Planning to get vaccinated or just got vaccinated and concerned about the side effects? In this article, we address your concerns and share the 5 most common side effects that you may experience after receiving your COVID-19 vaccine.

Whether you are considering vaccination, or you have already received the COVID-19 vaccine, you may have concerns about the risks and side effects of the vaccines. All of the currently FDA-authorized vaccines, be it Moderna, Pfizer, or Johnson & Johnson, have documented side effects, however, these side effects may affect each person in their own way.

The 5 Most Common Side Effects

The CDC lists common side effects that you may experience after receiving your COVID-19 vaccine. Do not be alarmed if you experience any side effects as these are often a sign that your body is responding to the vaccine. Remember, everyone’s body reacts differently, therefore some people may not experience any side effects.

  These side effects include:

  1. Arm pain
  2. Fever
  3. Fatigue
  4. Headache
  5. Body aches

Arm Pain 

Perhaps the most common side effect; most people who receive their COVID-19 vaccination report soreness in their arm where they received the shot. The soreness in your arm may last from a few days up to a week and maybe accompanied by redness or swelling in the area. To soothe the pain, try applying a clean, cool, and wet washcloth over the area. Gently use or exercise your arm until the soreness goes away.


If you are experiencing a fever after getting vaccinated, it is a sign that your body is building protection. You do not have to treat your fever if it is mild. However, for high fevers, you can treat it by taking over-the-counter (OTC) medication such as Tylenol or Ibuprofen. Some people may not be able to take OTC medication due to other medical conditions, therefore always consult with your healthcare provider before taking any medication. If you are struggling with a fever, be sure to drink plenty of fluids and dress lightly as this can help reduce discomfort.


You may feel sluggish or fatigued after getting vaccinated. The CDC recommends that you get plenty of rest and take time to relax if you are feeling more tired than usual. Drink plenty of fluids to make sure that you are not dehydrated and dress lightly.


You may experience a minor headache after getting vaccinated. Headaches generally go away on their own, but if your headache persists or becomes severe, please seek care immediately. To treat your headache, you can take OTC medication like Tylenol or Ibuprofen or try eating these foods to help relieve any discomfort or pain.

Body Aches

You may find that your body aches and muscles are sore after getting vaccinated. If you feel like you just worked out after getting vaccinated, do not be alarmed. Muscle aching is a common side effect and should go away on its own within a few days. Drink plenty of water and be sure to get plenty of rest to treat your body aches. Taking a warm bath with Epsom salts may also help soothe your pain. Your symptoms should get better and go away within a couple of days.  

How to Treat Your Side Effects

The CDC says drinking plenty of fluids, getting plenty of rest, and taking OTC medication can all help treat any mild symptoms that you may have. If your symptoms do not get better or if you develop any new symptoms, contact your healthcare provider.

Ask your healthcare provider about taking over-the-counter medications (OTC), such as ibuprofen, acetaminophen, aspirin, or antihistamines to help soothe or treat any pain or discomfort you may be experiencing after getting vaccinated.

What Should I Do About My Side Effects?

If you experience a severe allergic reaction to the vaccine, call 911 immediately or go to the nearest emergency room. Generally, you will have to wait at the vaccination site about 15-20 minutes after receiving the vaccine, to ensure no severe allergic reaction takes place. Contact your vaccination provider or your healthcare provider if you have any side effects that persist and do not go away.

You can report vaccine side effects to FDA/CDC Vaccine Adverse Event Reporting System (VAERS) by calling the VAERS toll-free number (1-800-822-7967) or submitting a report online.

How Can Trusted ER Help You?

It is important to know the common side effects of the COVID-19 vaccine so that you know what to look out for after getting vaccinated. 

If your side effects are severe and do not go away or if you think you may be experiencing an allergic reaction then be sure to seek emergency care at one of our Trusted ER locations near you. At Trusted Medical, we are here for you and ready to treat any illness or injury. 

We have 8 locations where we provide the best-in-class healthcare to patients in the most comfortable environment with exceptional care. Our ER offers limited wait times compared to large hospital systems. We aim to have each of our patients in a room and seen by our clinical team within a few minutes of arriving. We are open 24 hours a day, 7 days a week. 

Trusted ER is “Doing the right thing. Every patient. Every time.”