I started using Brewer's Yeast (Nutritional Yeast) about 30+ years ago. I have discovered over the years how it has cured the worst diarrhea and vaginal candida. Since 2016 I started taking it not as a solution to a problem but an almost daily supplement and have amazing results. I sleep so well when I take it regularly. Cures all types of insomnia. I also have been taking it to keep me healthy. I have not had a cold for years and I was using it while working in the classroom. If I forget to take it I have gotten sick over the years but I have learned to take it right away when I am coming down with something and it helps amazingly.
I use 2 heaping tablespoons in a small cup of warm water. (tastes the best). Make sure you stir it and taken best like a "shot". I really don't mind it. I look at it as feeding the health gut bacteria that works for me.