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Mild Gastrointestinal Upset: Nausea or mild stomach discomfort
It's vital for DNA synthesis, the formation of red blood cells, and maintaining neurological functions
For example, taking very high doses of vitamin B6 can lead to potentially irreversible nerve damage over time, while taking large amounts of niacin typically in excess of 2 grams per day can cause liver damage ( Fat-soluble vitamins Unlike water-soluble vitamins, fat-soluble vitamins do not dissolve in water and are easily stored in your bodys tissues ( There are four fat-soluble vitamins: Vitamin A Vitamin D Vitamin E Vitamin K Given that fat-soluble vitamins can accumulate in the body, these nutrients are more likely to lead to toxicity than water-soluble vitamins
Some individuals report feeling more alert or experiencing difficulty sleeping after taking B12 supplements, particularly high-dose formulations or injections
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