Following with a GIF of a duck shaking its cheeks is almost as bizarre as the choice to post the original tweet. That either were deemed worthy of being materialized is beyond me.
Bicarbonate produced by pancreas is to neutralize gastric acid and to buffer digestive enzymes. Serum pH regulation is carried out by the kidneys and the lungs.
He’s a fictional character, created in such a way that unrealistically places all the blame on his shoulders (who has rich friends to pay your medical bills?) while exonerating the healthcare industry by ignoring their contribution to the creation of unpayable medical bills.