glutathione or nac N-Acetyl-L-Cysteine (NAC) | Superior Supplement Products - Science First Glutathione biosynthetic scheme. N-acetyl-L-cysteine (NAC)
Description
Cyanocobalamin is a synthetic form of vitamin B12 found only in supplements, while Methylcobalamin is a naturally occurring form that you can get through either food sources or supplements
Yes, taking them together in a multivitamin is generally fine because the doses are usually balanced to minimize interference

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Although generally safe, injections should be used with caution in people with a history of allergic reactions to cobalamin or in people with Leber's disease (hereditary optic neuropathy), as B12 may worsen the condition
