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Does an IM injection hurt and what should I expect

Benefits of B12 injection can also include clearer thinking and a steadier mood

A high-dose B12 shot, which is given intramuscularly as prescribed by a doctor, can quickly resolve a deficiency by raising the level of vitamin B12 in the blood

Here are the main potential benefits people look for: Helps support fat loss goals May improve metabolism Supports reduction of belly fat Helps improve body composition May support lean muscle appearance Helps the body use stored fat for energy Supports weight control efforts It is often used by people who are already dieting or working out and want extra support

Magnusson, B., Svensson, P

Nature 562:203209