I had long haul Covid. Drinking Boost saved my life. Covid causes loss of magnesium. It hits people with mental issues the hardest. That’s where all the suicides came from. One Boost a day replenished my magnesium.
I’d say from my experience, it isn’t just any one mineral. It’s a number of them. And then it takes a build-up of them in the system to get past the symptoms.
Boost may have been enough for you, but those amounts are quite tiny and there isn’t much there that you wouldn’t get from a multi-vitamin without that insane amount of needless sugar.
That wouldn’t have done it for me. That amount of zinc is 1/10 of what I regularly take daily and it required more than that to get past long covid.