There are several ways to take vitamin B12 supplements or increase your intake, including: Food: Animal-based foods, such as meat, fish, like salmon and tuna, dairy products, eggs, and beef liver, are the richest natural sources of B12
Other forms, including methylcobalamin and adenosylcobalamin, are available as well (130)
Surgical procedures or conditions that affect the gut, such as gastric bypass surgery or celiac disease, can prevent intrinsic factors from binding to B12 and prevent the body from breaking it down before absorbing the vitamin
However, supplementing solely with folic acid/folate can mask an underlying B12 deficiency
Lipo-B injections are typically used as a supplemental aid to weight loss, intended to complement a healthy diet and exercise regimen
[1] Whilst vitamin B12 deficiency can cause serious health consequences including megaloblastic anaemia and neurological damage, supplementation is generally considered safe