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Proc Am Assoc Cancer Res, 2014

When a product is FDA-approved, it means that its been evaluated for: Safety: Is this product safe for humans to use

doi: 10.1007/s10072-014-1864-8

This is explicitly stated in Hospira's own labeling for their bacteriostatic water for injection product

By the third month, the a-wave amplitude also shows a reduction, with retinal function declining by approximately 50% compared to age-matched normoglycemic control groups (55,56)

This deferent dependence renders cancer cells resistant to inhibition of NAMPT by other NAD + synthesis
