Hepatitis A Vaccine Side Effects

Hepatitis A virus is responsible for the highly contagious liver infection hepatitis A. This is just one of the hepatitis viruses that cause the liver to be inflamed and affects its functionality. Hepatitis A can be acquired from close contact with an infected person, or consuming contaminated food or water. If the infection is mild, you can recover without medication and with no permanent liver damage. Good hygiene like frequent washing of hands is among the best ways of protecting yourself from hepatitis A. People who are at high risk of getting hepatitis A can get vaccinated but hep A vaccine side effects must be kept in mind.

Hepatitis A Vaccine Side Effects in Adult

Hepatitis A vaccine might cause some side effects as it delivers its needed benefits. You might not experience all the side effects.

Consult Your Doctor if You Experience the Following Side Effects

1. Common Ones

  • Unusual weakness or tiredness
  • General feeling of illness or discomfort
  • If your fever is higher than 99.5°F

2. Rare Ones


Loss of voice

Voice changes

Itching, particularly hands and feet

Unusual weakness or tiredness (severe and sudden)

Tender, painful or swollen lymph glands in the groin, armpit and neck

Chest feeling tight


Swollen tender glands in the neck

Swelling of the face, eyes or inside the nose


Ear congestion

Sore throat or headache

Soreness or dryness of the throat


Difficulty with swallowing and breathing

Shortness of breath


Runny nose

Pain or body aches 

Skin turning red, particularly around the ears


Nasal congestion

Chest congestion

3. Incidence Not Known


Shakiness and unsteady walk

Yellow skin or eyes

Pins and needles sensation

Vomiting blood


Trembling, unsteadiness or other issues with muscle coordination or control

Sores, white spots and ulcers in the mouth or lips

Unpleasant breath


Swollen lymph glands

Pinpoint red spots on the skin

Swelling or puffiness around the eyes or eyelids, lips, face or tongue

Sudden numbness and weakness in legs and arms


Muscle cramps or aches

Stiff neck

Loss of appetite

Stabbing pain

Dark urine

Irritated, red eyes

Muscle or joint pain

Slurred speech

Increased sweating

Blood in stool or urine

Inability to move legs and arms

Loosening, peeling or blistering of the skin


Bleeding gums


Tarry black stools

Flu-like symptoms

Back pain

Feeling depressed or sad



Stomach or abdominal pain

Fast heartbeat


Fainting or Coma

Difficulty with walking


Difficulty controlling bowels and bladder

Blurred vision


Clay-colored stool

Large, hive-like swelling on sex organs, lips, feet, legs, hands, throat, tongue, eyelids or face

Pins and needles, prickling, numbness, itching, crawling, burning or tingling sensation in legs, feet, arms or hands

Temporary Hepatitis A Vaccine Side Effects

There are other Hep A vaccine side effects that do not need medical attention. They will fade as treatment continues but your doctor might tell you ways to reduce or prevent these side effects.

1. More Common Ones

It may include weight loss, pain, lumps, warmth or tenderness, swelling or redness at the site of the injection.

2. Less Common Ones

It may include unusual stopping of menstrual periods, change in pattern of monthly bleeding, loss or lack of strength, bleeding between periods, arm pain, etc.

3. Rare Ones


Excessive muscle tone

Inability to sleep

Lightheadedness or dizziness

Trouble sleeping

Difficulty moving


Difficulty with night vision

Spinning sensation

Dark purple bruises

Muscle tightness or tension

Blood collection under the skin

Loss of taste

Change in taste

Eyes increase sensitivity to the sun

Change in color vision

Constant feeling of movement of surroundings or self

4. Incidence Not Known



Feeling of pressure


Skin discoloration













Warmth at injection site





Unusual drowsiness or sleepiness


Hepatitis A Vaccine Side Effects in Children

You should make sure to report any hep A vaccine side effects your child previously experienced before getting another shot. The following are some of the side effects of hep A on children and do know that this is just a general list, not a complete list.

1. Get emergency medical attention if your child shows the following signs of an allergic reaction:

  • Hives
  • Difficulty breathing
  • Swelling of throat, face, tongue or lips

2. Call your doctor if you notice any of the following serious side effects:

  • Fainting or extreme drowsiness
  • Irritability, mild fussiness or crying for an hour or more
  • Seizure (convulsions or black-out)
  • High fever after a few hours or days after the vaccine

3. Less serious hep A vaccine side effects include:

  • Redness, swelling or hard lump at the injection site
  • Headache
  • Sore throat
  • Joint pain
  • Diarrhea
  • Stomach pain
  • Vomiting and nausea
  • Loss of appetite
  • Tired feeling, dizziness
  • Mild crying or fussiness
  • Mild fever

Watch the video below to know what hepatitis A is, how one get it, when to get the vaccine: 

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