Vitamin B12 : Weakness and fatigue are common symptoms of Vitamin B12 deficiency. It happens because your body doesn't have enough Vitamin B12 to make red blood cells, which transport oxygen throughout your body.
What B12 should you take ? Methylcobalamin Vs Cyanocobalamin : Methylcobalamin is found in nature, but cyanocobalamin is a synthetic form of vitamin B12 that is not found in nature and contains a cyanide molecule. Cyancobalamin is more cost-effective and more stable, while Methylcobalamin is less toxic and has better retention. Methylcobalamin also acts faster in the body , Cyanocobalamin has to be converted, which can take up to 48 hours.
Most people say that taking B12 sublingually is the best way, which means under the tongue. A study comparing the sublingual and oral administration of 500 mcg of cobalamin concluded they are both effective in treating the deficiency. The recommended dietary allowance for adults is 2.4mcg. Women who are pregnant or breastfeeding need more.
