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But if you also supplement with calcium, your best bet is spacing out the doses
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Vitamin B12 injections can: Increase energy levels and combat fatigue Speed up metabolism Help improve sleep patterns Increase concentration Improve mood Boost the immune system Help with weight loss Possibly help with hair growth or stop hair loss There is no upper limit for the intake of vitamin B-12 because the risk of toxicity or overdose is extremely low
However, no research directly compares continuous use versus cycling protocols (such as 12 weeks on, 4-8 weeks off), leaving optimal long-term strategies somewhat uncertain
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