Diseases and Conditions

Understanding Hepatitis A and B

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Hepatitis Vaccines Side Effects

Hepatitis B recombinant vaccines may cause side effects such as diarrhea, flu-like symptoms, irritability, weakness, lightheadedness, fainting, visual changes, dizziness, and seizures. Hepatitis A vaccines may cause side effects such as fever, hives, increased heartbeat, dizziness, paleness, hoarseness, breathing difficulty and behavioral problems. Minor side effects such as fatigue and headache can last for a day or two after a hepatitis vaccine is administered. You should seek medical advice in case you experience side effects that last for more than two weeks.