can a b12 injection make you feel sick I Tired All the Time. Do I Need Shot?: Shawn Veiseh, M.D.: Family Medicine Vitamin B12 Side Effects Stomach:

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Common side effects include mild pain or redness at the injection site, transient headache, and pink-tinged urine due to the red colour of hydroxocobalamin

These compounds bridge the gap between simplistic herbal formulations and structurally fragile peptides

Another study in the Journal of the American Medical Association notes that among those with diabetic nephropathy (loss of kidney function due to diabetes), combining vitamin B6 (25 mg) and folic acid (2.5 mg) (B-complex vitamin) with 1,000 mcg of oral B12 per day for six years increases the risk of cardiovascular events, including heart attack and stroke

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