why are b12 injections red Do Help with Fatigue and Low Energy? B12 Injections for Energy Boost

(Science!) Because of this, theres actually no tolerable upper intake level (UL) for B12 (the max dose you can take before you experience side effects)

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

BMC Genomics 19 , 234 (2018)

Health Benefits of Vitamin B12 Common Food Sources of B6 and B12 When to Think About Supplements Can You Take B6 and B12 Together

Nutr Clin Pract

It's what your body actually usesunlike cyanocobalamin, which must be converted and may be less effective, especially for those with MTHFR mutations