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If evaluating products, look for third-party testing, certificates of analysis, and GMP documentation

Hi Ritchie, I am on my 15th injection but none of my symptoms have gotten better

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General Precautions: Vitamin B12 deficiency that is allowed to progress for longer than 3 months may produce permanent degenerative lesions of the spinal cord

Serum B12 above 300 pg/mL is often interpreted as normal (6) Serum B12 levels between 200 and 300 pg/mL are considered borderline (in which case further enzymatic testing may be helpful for diagnosis) (6) Enzymatic testing: serum levels of MMA and homocysteine should both be elevated if B12 deficiency is present