According to the NIH Office of Dietary Supplements, functional B12 deficiency is most commonly seen in patients with one or more of the following: Age over 50 stomach acid production declines with age, and stomach acid is required to free B12 from food PPI or H2 blocker use reflux medications suppress the acid needed for B12 absorption Metformin use, which interferes with B12 absorption directly Vegan or vegetarian diets B12 is found almost exclusively in animal products Gut conditions including celiac, IBS, SIBO, and Crohns MTHFR mutations that affect how B12 is metabolized once absorbed Heavy alcohol use The symptoms of low B12 are easy to dismiss: fatigue, brain fog, low mood, tingling in the hands or feet, weakness, and shortness of breath on mild exertion
Homocysteine normalisation is a good functional marker that the B vitamin correction is working at the cellular level, not just in the serum
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Hydroxocobalamin (Vitamin B12) Injection Hydroxocobalamin (Vitamin B12) Injection (10 mL Vial) Product Overview Hydroxocobalamin (Vitamin B12) Injection is a compounded sterile solution of hydroxocobalamin, a form of vitamin B, typically supplied at a concentration of 2 mg/mL in a 10 mL vial
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