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Oral B12 supplements have to pass through the gut, and absorption can be limited especially if you have digestive issues, take certain medications like metformin or antacids, or simply have low stomach acid
For healthy adults, once or twice monthly is generally safe
Intramuscular Injections Ideal for gradual release and ongoing support
It also plays a crucial role in the functioning of the nervous system, as it is needed to produce the protective covering of nerves known as myelin
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