So i bought these and i didnt know if they were going to do anything. The weather was just all over the place these past couple months. So i just said lets just try it. Let me tell you all, ive been taking two every day the past month (going on two months) and i have yet to catch a little sniffle, a flu, a cold, no chest pain. So im grateful to have found this brand to be completely honest because of the affordability and quality all in one!