3Is It Good To Take High Doses of Vitamin B12?
Vitamin B12 is a water-soluble nutrient. Therefore, it is basically safe to use at high doses. Due to the low toxicity level, there is currently no upper intake level for this vitamin. However, taking an excessive amount of vitamin B12 would increase the risk of a few negative side effects. Some studies have suggested that megadoses could result in outbreaks of rosacea and acne, which causes pus-filled bumps and redness on the face. Keep in mind that these studies mostly focused on high-dose injections instead of oral supplements. Other possible risks of high B12 levels include kidney disease, diabetes, stroke, or heart attack. The recommended daily intake of vitamin B12 is around 2.4 mcg for both women and men. Breastfeeding and pregnant women might need a higher amount. [3]
