are there any side effects from vitamin b12 injections Injections: What You Need To Know Why Do I Feel Worse

Particularly bad stuff

These include: itching and swelling of the face, throat, or tongue breathing difficulties severe dizziness sudden vision changes slurred speech

Mood Changes : There have been anecdotal reports of mood swings or changes in emotional well-being, likely due to the changes in energy metabolism

If too much vitamin B12 is taken, certain symptoms may arise - including a change to your pee How to get vitamin B12 Meat and fish are some of the best sources of B12, but people who dont eat these foods, such as vegetarians, may face having low levels of the vitamin

Usually more expensive than oral or sublingual supplements

Any noticeable improvement in energy levels or your get-up-and-go, without an underlying deficiency, could simply be a placebo effect