did a quick little google research and there are plenty of studies that show it has Some benefits.
[URL unfurl="true"]https://www.healthline.com/nutrition/echinacea-for-colds#side-effects[/URL]
what I read seems to point to the benefits of echinacea are after you catch a cold. That it can cut down on how long you have the cold. But that it does little to keep you from catching a cold.
Your general vegan vitamin probably contains some zinc. Probably not 100%. A big dose of zinc can cause nausea. also its best taken with food to alleviate nausea.the last multi I took had 125% zinc. I could not stomach it without food. but my new one is just 45%. and its not like the rest of my diet contains no zinc.
My general thoughts on disease prevention is pretty standard. Good nutrition, Good sleep, get some exercise and wash your hands. Good nutrition may include vitamin and mineral supplementation.
You might look into a product called Airborne. I think its marketing was originally as something to take for a few days before flying. Not that long ago airplanes were like Petri dishes for cold and flu viruses. I remember back in the day catching something every time I flew.
Airborne contains vitamins A, C, and E; magnesium; zinc; selenium; manganese; sodium; and an herbal extract blend of echinacea, ginger, vitex, Japanese catnip, isatis root, and forsythia.
Not sure how its marketed today but back then it was meant to take just for a few days before you flew. So I'm not sure what would happen if you took it every day - all the time.
Oh, just discovered that Airborne lost a lawsuit. False advertising.
