side effects of a vitamin b12 injection and Safety How Quickly Does B12 Shot

My energy level increased and I feel great

Circulating antibody to transcobalamin II causing retention of vitamin B12 in the blood

Nicotinamide N-methyltransferase: More than a vitamin B3 clearance enzyme

Featuring a quinoline ring as its core scaffold, it has a small molecular weight and excellent cell membrane permeability

In more rare yet severe cases, you may experience: Itching or a feeling of swelling all over the body Muscle cramps and weakness Upset stomach and urinary problems Swelling in the ankles or feet Unusual tiredness Irregular heartbeat or trouble breathing If these side effects occur, consult your healthcare provider before continuing B12/MIC