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There are several different types of vitamin B12 supplements available today: Capsules/pills that are taken by mouth Sublingual forms of B12, which are dissolved under the tongue Nasal gel form, which is usually a prescription that is taken through the nose to treat deficiency B12 injections, which are usually given by prescription but sometimes are given over-the-counter B12 ointments and creams, used to treat skin conditions like sores, dermatitis, eczema or psoriasis The vitamin B12 supplement brand that is best for you depends on the dose you need, how well you can absorb B12 and how you prefer to take supplements
J Clin Invest 118(6):22462259
If you add 1 mL instead, the concentration doubles to 5 mg/mL
Neurological recovery from B12 deficiency typically takes months, though some patients report reduced symptoms within weeks of starting treatment
Optimal dietary patterns for healthy aging
Divide the vial strength of 5000 mg by the amount you use per injection
