is oral b12 as effective as injections Vitamin Injections: What You Need To Know Vitamin B12 Injections vs. Oral

2015 Dec;21(12):283947

We do not recommend B12 injections unless a true deficiency is present, in line with current medical guidelines

We dug deeper and realized he had high ferritin and iron overload

Signs of low vitamin B12 include: Fatigue Nausea Throwing up Diarrhea Losing weight without trying A sore tongue A yellow tinge to your skin Fuzzy thinking Numbness or tingling in your hands and feet Vision changes Trouble walking or speaking Feeling easily irritated Confusion Depression Many conditions share these same symptoms

Other possible symptoms of deficiency are headache, swollen or sore tongue and it can affect the absorption levels in the gut