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Hypoxia increases HIF-1-mediated iron uptake through upregulation of TFRC and DMT1 expression, promotes the accumulation of ROS and affects cell susceptibility to ferroptosis (61,82)

Effects of adding L-arginine orally to standard therapy in patients with COVID-19: a randomized, double-blind, placebo-controlled, parallel-group trial

NAD+ Nasal Spray (ReadyRx's Format) The nasal spray format provides a middle ground: potentially better bioavailability than oral supplements with far greater convenience than IV infusions, and without the needle requirement of injections

Furthermore, Dambrova et al

(2023) 147(8):e93621