Most people associate B12 with health, energy, and vitality, so it's another vitamin found in high concentrations in many energy formulas. Like B6, high doses of B12 (>1,000 mcg) increase neurotransmitter levels 3, and as a result, have stimulating properties. This can be beneficial for people experiencing mood disorders like depression, though
Use of vitamin B12 and iron during chemotherapy was linked to poorer outcomes. However, while results of this study hint of a connection between use of antioxidants and outcomes, a larger study is needed to understand whether these popular nutritional supplements definitely affect chemotherapy outcomes for cancer patients.
The extensive history of daily, long-term intake of tea indicates a high level of safety, although that usage does not adequately address the issue scientifically, Blumberg says. Other than the issue of caffeine intake, I am aware of only two documented situations where tea may have an adverse impact on nutritional status.
Vitamin C (ascorbic acid) can decrease the amount of vitamin B12 you absorb. Avoid taking large doses of vitamin C within one hour before or after taking this product.
Key Takeaways. Vitamins D, E, C, B6, and B12 may promote better sleep. Increasing your vitamin intake may help with sleep, but is not a solution for chronic sleep issues. Your doctor can recommend a vitamin or supplement regimen best for you.
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