I did them when I first got covid in early 2020, and I didn't ever have to go to the hospital, so I'm going to say they did. I think they offer a level of protection, though not a cure.
I was listening to a doctor who said all of his patients who were hospitalized with Covid had low D3 levels. I believe this. D3 is a powerful immune boost.
Garlic is an anti viral. The rest are strong, too. Probiotics are also a wonder drug, but in different ways than garlic. Digestive helth is key to preventing many, many illnesses.
Saw a good movie on Vudu last night, The Girl with all the Gifts. She was born a zombie half breed. But was good, and didnt know she was a zombie til later. Story got interesting