Case Presentation: A 44-year-old male hospitalized for an extended period with severe diarrhea and polyarthritis developed worsening anion gap metabolic acidosis (AGMA) over the course of 10 days. The patient was being treated for septic arthritis in the background of polyarticular gout with vancomycin, ceftriaxone, colchicine, indomethacin, and acetaminophen. Acetaminophen was dosed as needed on [...]