Food Res
Unlike oral vitamin supplements, you do not need to take a vitamin injection every day
[6] [65] Since there are few non-animal sources of the vitamin, vegans are advised to consume a dietary supplement or fortified foods for B 12 intake, or risk serious health consequences
Vitamin B12 is a water-soluble vitamin essential for red blood cell formation, neurological function, and DNA synthesis Requirements vary by age: infants need 0.30.4 mcg daily, children 0.51.2 mcg, and lactating women 2.0 mcg Pernicious anaemia typically requires intramuscular injections of 1,000 mcg hydroxocobalamin, initially three times weekly then every 23 months Deficiency causes macrocytic anaemia and neurological symptoms including paraesthesia, balance problems, and cognitive changes that may become irreversible B12 is found almost exclusively in animal products
If your diet is lacking B12, you might only need shots once or twice a year
Most people notice increased energy within 2472 hours, especially if their B12 levels were low to start