is oral b12 as effective as injections vs. Supplements: Which Better? Vitamin B12 Injections vs. Supplements:

For the majority of people, I recommend once weekly for 4 weeks

In 2018, a Biochemical Pharmacology study reported that membrane-permeable NNMT inhibitors given to obese mice cut white fat mass and body weight and shrank adipocytes [5]

Elderly Individuals : As people age, their ability to absorb B12 from food may decrease, making B12 injections a valuable option for elderly individuals

When adverse effects do occur, they are usually mild and transient, often related to the route of administration rather than the vitamin itself

Each batch is independently tested by a third-party laboratory not in-house

These ranges come from allometric scaling of the animal work plus anecdotal reporting not human trials so anchor your expectations to that