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I get buzzing in my ears and sudden bouts of tinnitus too, less now
Oral supplements might not work well for some because of absorption issues or severe conditions
In Vitro Studies Variables commonly adjusted: Concentration Exposure duration Cell type Endpoint measurements Preclinical Studies Variables commonly adjusted: Dose Delivery route Study duration Experimental objective Appropriate controls should be used to isolate compound-specific effects
Methylcobalamin is typically preferred, as it is better absorbed and retained than the synthetic types
Some people do not absorb B12 efficiently due to age, gastrointestinal issues, or insufficient intrinsic factor, a protein required for B12 absorption
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