can vitamin b12 injections cause dizziness Do Help with Fatigue and Low Energy? Vitamin B12 Side Effects: Risks

High-risk groups who should be considered for monitoring include: Patients taking metformin for more than three years Those on high-dose metformin (2g daily) Older adults (aged 65 years and above), who have reduced gastric acid production and lower B12 stores Patients with pre-existing risk factors for B12 deficiency, including previous gastric surgery, pernicious anaemia, or inflammatory bowel disease Individuals following vegan or vegetarian diets with limited dietary B12 intake Those taking acid-suppressing medications (proton pump inhibitors or H2-receptor antagonists) Patients with symptoms suggestive of B12 deficiency Patients with unexplained anaemia or neuropathy The frequency of monitoring should be guided by clinical judgement and local pathways, with consideration of individual risk factors

WITHDRAWAL TIMES: None

The dose and how often you get injections can change

Because it dissolves in water, your body uses what it needs and passes much of the excess in urine

Low levels of vitamin B-12 impair the synthesis of thyroid hormone, leading to a worsening of hypothyroidism symptoms

When injecting the medication, rotate sites or avoid injecting it in the same spot twice in a row