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is there any side effects from b12 injections Shots: Vitamin B12 Benefits, Uses, Risks Side Effects of Vitamin B12
Description
Importantly, a formal Tolerable Upper Intake Level (UL) has not been set for B12 due to a lack of evidence for harm at high intakes ( IOM/DRI rationale )

Seek medical advice if symptoms persist or worsen

LeRoith D, Werner H, Beitner-Johnson D, Roberts CT

Vitamin C (ascorbic acid) supplements
