I'd first tell him to stop taking the Remdesivir (I am not a doctor, this is my personal opinion and it sounds like it's not helping).
Simplest solution would be benadryl + milk, if he can somehow get his hands on these two substances.
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I will copy/paste a few more options below:
1.) Zelenko protocol is Quercitin, Zinc, Vit D3 and Vit C (Someone also mentioned trying something called IMMUNE HERO)
2.) Recently there's that study saying milk + benadryl can cure covid
3.) Of course there's also Ivermectin which I highly recommend: frontlinemds.com (good site) americasfrontlinedoctors.org (slow/no response, sometimes just refunds but maybe worth trying) ivmpharmacy.com (I think someone just linked this in a comment. Cheap, but know nothing about it and can't attest)
4.) Dr. Dimitri Katz claims Melatonin + Niacin cures covid (Don't know much about this) https://niacincurescovid.com/
Can you call and speak to him over the phone?
I'd first tell him to stop taking the Remdesivir (I am not a doctor, this is my personal opinion and it sounds like it's not helping).
Simplest solution would be benadryl + milk, if he can somehow get his hands on these two substances.
--
I will copy/paste a few more options below:
1.) Zelenko protocol is Quercitin, Zinc, Vit D3 and Vit C (Someone also mentioned trying something called IMMUNE HERO)
2.) Recently there's that study saying milk + benadryl can cure covid
3.) Of course there's also Ivermectin which I highly recommend: frontlinemds.com (good site) americasfrontlinedoctors.org (slow/no response, sometimes just refunds but maybe worth trying) ivmpharmacy.com (I think someone just linked this in a comment. Cheap, but know nothing about it and can't attest)
4.) Dr. Dimitri Katz claims Melatonin + Niacin cures covid (Don't know much about this) https://niacincurescovid.com/
5.) Here's an interesting thread about how some guy kicked it when the basics didn't work: https://greatawakening.win/p/140cWp5OUC/i-am-sick-with-covid-for-10-days/