vitamin b12 injection dosage for adults in ml weekly dose how many of b12 should i inject weekly B12 Injection Adults: 7 Key Medical Guidelines-ch dosage of vit b12 injections

Research shows that 4 mm needles are effective, less painful, and carry no risk of penetrating muscle tissue, even in lean people

Symptoms of B12 Deficiency The symptoms of vitamin B12 deficiency include a mixture of the physical symptoms associated with peripheral neuropathy, as well as cognitive issues: Physical Symptoms Peripheral Neuropathy experiencing unpleasant sensations in the extremities (the hands, arms, legs and feet) due to nerve damage, such as those listed above Despite feeling the minor irritating phenomenon of pins and needles, persistently feeling the sensation may suggest that you have nerve damage, which should be taken seriously Issues with your eyesight, such as visual disturbances or impairments Experiencing paralysis in areas such as the extremities can suggest that nerve damage has become severe, so medical intervention should be sought as soon as possible

For example, individuals with digestive system disorders may not benefit from liquid, chewable, or tablet forms of cobalamin

doi:10.1093/ajcn/87.2.362

In the UK, buying and injecting B12 yourself is strongly advised against