how long for vitamin b12 injection to take effect Injections vs Pills: Richmond's Complete Guide B12 INJECTION - Elite IV

The appointment is usually very quick

Nature Reviews Endocrinology .

Mood changes such as irritability, depression, or anxiety, as well as numbness or tingling in the hands and feet, can also be linked to low B12 levels

As well, some people may have allergies or medical conditions that do not allow them to be a good candidate to receive vitamin B12 shots, such as kidney problems, low potassium levels, deficiencies in other vitamins such as iron or folic acid, or just an allergy or sensitivity to vitamin B12 itself

A deficiency can cause a wide range of symptoms, including fatigue, weakness, memory problems, and anemia