Nitric oxide
As a former Neonatal Intensive care RN, I have taken care of premature infants who required Nitric as a last resort for failing lung function. Every gets a big laugh out of giving "Viagra" to premature infants, but those born at 23-16 weeks gestation have very underdeveloped lungs and even on 100% oxygen (room air that you and breathe is 21% oxygen) they often cannot maintain their oxygen saturations (O2 sats) at the level required to sustain life and prevent damage to the eyes and brain.
Sildanafil promotes increased oxygen saturation and can save their lives.
I think the investigative work using this drug may hold a chance of saving lives of covid19 patients who suffer sudden severe lung damage. all jokes aside, the science is there.
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