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CL Answer L-Serine & D-Serine: Health Benefits and Safety Serine exists in two forms: L-serine and D-serine
Levels of 0.40% or higher are potentially fatal, with risks including coma and death due to respiratory arrest
This direct delivery means your body can use the vitamin immediately, unlike oral supplements that need to be digested and absorbed
Because absorption is limited, raising serum B12 with pills is a gradual, cumulative process that can take weeks or months of consistent daily use
One common deficiency is in vitamin D, a vital fat-soluble vitamin that plays a crucial role in numerous bodily processes, including maintaining bone density
Immune system disorders, such as Gravess disease or lupus
