Can you get very sick from hepatitis b vaccine?

Patient : Can you get very sick from hepatitis b vaccine, ever sine i got the last one ive been so sick liquid diarrhea and throwing up.
Doctor :   Hello. Welcome to Ask The Doctor. I understand your concern. You won't get sick from Hepatitis B vaccination if the v accine used was not expired. Very often, you get flu like symptoms and even diarrhea after getting vaccinated. This usually improves with in 2-3 days. If this persists then this might be due to some co-incidental infection. You would require to see your doctor in case, it persists. Share my opinion with your doctor. I hope it helps. Stay Healthy

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