Our expert says:
Is he still taking his tablets for the gastritis, it may have worsened to a peptic ulcer now? Rather let him go back to his doctor. For the time being try giving him an antiacid like Gelusil or Mucaine. He may have low iron levels if he has some bleeding from the stomach. He needs to have a blood test to check for this. Multivitamins would really make him nauseous now, so rather avoid. If needed his doctor can give him a vit B complex injection.
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