I purchased the Protect supplements because I felt that getting sick often is not helpful when I’m grinding to better myself through the TB12 program. It’s accepting a new lifestyle, and it’s more difficult when you are recovering from a nasty cold. It hinders progress. Unlike the other daily supplements from TB12, ‘Protect’ is something o do not have to take daily of I’m not being social. It’s something I can order every other month. It’s financially sensible. If I’m preventing sickness, I can do more, and not be hindered by sickness. I recommend taking it whenever you are going to be social. It’s a layer of protection against what may compromise your immune system. I hope this helps if anyone was trying to understand why they should buy this product.