I know a woman whose husband was hospitalized during CV - late 30s/early 40s. This was the first wave, and he got pretty sick. She was actually prepping her kids for the fact that he might not make it. But she was relentless (she has a talent for pushing to get what she wants but isn't an asshole about it. Just patient and persistent.) Anyway, she was reading everything she could and advocated to try high dose Vitamin C via IV, which allowed him to finally turn the corner.