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However, deficiency is common, especially in people with low stomach acid, digestive conditions, vegan or vegetarian diets, or age-related absorption decline
Combination injections are better than separate ones for these cases
Injections deliver B12 directly into the bloodstream, making them far more effective for those with deficiency
It should be very close to the theoretical molecular weight (e.g., "1419.5 1.0")
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