By activating both incretin pathways, tirzepatide enhances insulin secretion in a glucose-dependent manner, suppresses glucagon release, delays gastric emptying, and reduces appetite through central nervous system effects
While oral B12 supplements are available, vitamin B12 injections have advantages including enhanced absorption since it bypasses digestion, a fast-acting energy boost from quick absorption, higher blood levels reached versus pills, lasting benefits between maintenance doses, improved concentration and mental clarity, and often more affordable and convenient long-term
Vitamin B12 deficiency is associated with cognitive problems (problems with thinking, judgment, and learning) and memory issues
First pass metabolism typically results in low bioavailability, resulting in adjusted dosages
Vitamin B12 requires an intrinsic factor-mediated active transport for absorption, therefore, lack of or inhibition of intrinsic factor results in pernicious anemia
