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A 2025 meta-analysis of 16 studies involving 6,098 participants found no statistically significant difference between intramuscular, oral, and sublingual B12 supplementation routes
The most common side effect is simply pain at the injection site
B12 shots are also highly effective
Monitoring Treatment Response in Pernicious Anemia Its very important to keep an eye on patients with pernicious anemia to make sure vitamin B12 therapy is working
Do not use vitamin b12 injection for dogs if it appears cloudy or color has been changed or vial is leaked or damaged, these are the signs of expiration
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