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
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Not the reason almost anyone is actually buying it
It is not FDA-approved for weight loss: its clinical development was halted after Phase 2b, so any use is off-label and should be supervised by a licensed provider
Rare side effects can include hormonal imbalances, allergic reactions, infections, and increased appetite
Expanded Joint Health Benefits Joint health becomes increasingly important with age and training experience, which makes BPC 157s benefits in this area particularly valuable