So I have covid. I'm alone in my house until Wednesday, and I have a friend willing and able to grocery shop for me

May I suggest.. Raw garlic. With food or you can just keep it in your mouth like a candy. Unpleasant, I know, but it is something like a natural antibiotic. And you can do the same with ginger, also raw if you can find. At home we keep some ginger on small pieces in vinegar so it doesn't perish too fast. And we grab one everyday in colder seasons . It is important to drink a lot of water. I also suggest tea with lemon, ginger, cinnamon, cloves and maybe even a little cardammon. If you can eat spicy it is also good. Drink a little hard alcohol (with measure) but slowly making sure it passes well through your throat burning down all the bad stuff ;). If you can get your hands on real natural yoghurt (tastes a little sour, has Lactobacillus bulgaricus) it is good to keep your stomach and intestines balanced and healthy and it feels nice especially after a spicy meal. Btw, remember that good sleep and laughter are the best medicine:) ***i might have had covid before the measures XD I wish you to go though it lightly and quickly!