how long for vitamin b12 injections to work INJECTION is the b12 injection good

Both reasons are valid but the approach, expectations, and oversight should differ accordingly

Of course, the vitamin B12 shots themselves do not stay in the body for five years

B12 injections can improve mood and emotional well-being by supporting healthy serotonin levels

The most common reports are mild stimulant-like effects (warmth, slightly higher resting heart rate), insomnia if dosed late in the day, and mild stomach upset with capsules

Though this is speculative rather than evidence-based

Survey results from almost 1,300 patients found that 40% sourced vitamin B injections from online sellers based overseas