b12 injection side effects headache I've had a migraine since Sept 4th. I took a that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one MIC B12 Injections Side Effects

Once a dog has begun taking a vitamin B12 supplement, small improvements may be seen in just a few days, but it can take several weeks before the dog fully responds to treatment.

However, if vitamin B 12 deficiency is the cause, it will persist despite the resolution of the anemia

In that setting, patients received high-dose NAD+ daily for about 4-10 days to alleviate acute withdrawal symptoms, followed by tapering to less frequent booster injections over the ensuing weeks

You should take this medicine until your doctor tells you to stop

Many people are deficient without knowing it especially those who eat plant-based diets, take certain medications, or are over 50