In all cases you should follow the manufacturers directions as one medical reference notes, the volume of the preparation to be used for diluting or dissolving any drug for injection is dependent on the vehicle concentration, dose and route as recommended by the manufacturer
If your B12 levels are low, your doctor will often inject it into a muscle to be sure your body absorbs it
Some people notice changes in sleep, energy or appetite within a few weeks, while body composition, joint health, hormonal balance and cognitive benefits may take a few months
If you have been taking oral B12 supplements without feeling any improvement, this may be why
Vitamin B12 Warnings Patients who have early Leber's disease (LHON) a hereditary disease that causes optic nerve atrophy have been found to suffer severe and swift optic atrophy when treated with vitamin B12
Lipotropic injections might be the key