B12 supplements come in various forms, including pills, sprays, and injections ... and do not cause any significant side effects. However, high doses of Vitamin B12 may cause mild gastrointestinal ...
However, when considering shots, you'll want to consider a few things. One, they'll be more expensive than vitamin B12 supplements. They can also cause side effects, such as skin rashes ...
Taking too much of some vitamins may cause negative side effects ... foods that are high in vitamin D. A 2020 study of 76 people found that combining oral vitamin B12 supplements and artificial ...
Doing so can release all of the drug at once, increasing the risk of side effects. If you are taking ... tests (such as complete blood count, vitamin B12 levels) may be done while you are taking ...