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doi:10.1016/j.phymed.2024.155376 104

Although PLS patients do not exhibit severe immunodeficiency, the specific impacts of long-term DPP1 inhibitor use on immune function still need further clarification through large-scale long-term clinical studies ( Standardization of NSP activity monitoring methods represents a technical need

In: Dietary Fiber

JAMA (2019) 321:192627

Since B12 is water-soluble, your body excretes what it doesnt use, making it generally safe, even in higher doses [*]

By age 60, that level has dropped to roughly 80 ng/mL