Once the IF/B12 complex is recognized by specialized ileal receptors, it is transported into the portal circulation
Baseline and interval laboratory monitoring should include: fasting glucose and HbA1c (tirzepatide can cause hypoglycemia in non-diabetic subjects if caloric intake drops too low), lipase and amylase (pancreatitis risk with GLP-1 agonists), liver function tests (AST, ALT, bilirubin), and thyroid panel (TSH, free T3, free T4)
PMID 11817985
Unfortunately, singly housing is not commonly reported
Can B12 Cause Diarrhoea
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