does b12 injections keep you awake The truth about vitamin and insomnia B12 Shots Phoenix | Arcadia,
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Initial blood work is recommended to confirm whether a patient is genuinely deficient in B12 and needs supplementation, or whether another underlying issue may be affecting energy, weight, or metabolic function

5,000 mcg daily is common in standalone B12 supplements
Other studies have shown that taurine may improve mood, increase mental sharpness and boost athletic performance