is vitamin b12 injection intramuscular Store vs Subcutaneous Injections for vitamin B12 supplements Intramuscular Vitamin B12 Injection Treatment:

Diarrhoea is an uncommon side effect of vitamin B12 supplementation, listed as a rare adverse reaction in UK product information for both oral and injectable preparations

Persistent nausea that impairs daily life is not, regardless of results

Contaminated medication poses infection risk

Vitamin B12 deficiency results in megaloblastic anemia, GI lesions, and neurologic damage (which begins with an inability to produce myelin and is followed by gradual degeneration of the axon and nerve head)

Formation of red blood cells: It helps improve hemoglobin in the blood and blood formation rates, which is important for women during menstruation and pregnancy when the body needs more oxygen and nutrition

Where the cause is an absorption problem such as pernicious anaemia, food and tablets support your levels but do not remove the need for the injection schedule your GP has set