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Most people want to know one thing right away: how long does a B12 shot last

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It takes about 2-4 weeks to begin to observe improvements

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Cognitive Function: B12 is helps support nerve cell health and cognitive function* Cellular Energy Production: Vitamin B12 can also play an important role in contributing to energy production and maintaining a healthy immune system* Immune Support: Vitamin B12 plays a role in immune system health and healthy homocysteine metabolism* Pure Quality: Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then manufactured and tested to verify potency and purity Pure Difference: What we leave out matters, too